JP2009012929A - Power supply system of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rescue passengers by quickly switching to backup operation, when power failure is caused, by stably supplying electric power to a driving system and a control system of an elevator. <P>SOLUTION: This power supply system has an inverter device 111 outputting the electric power of a sine wave supplied from a commercial power source 101 by being converted into a rectangular wave, and a battery 113 storing the electric power of the commercial power source 101 in ordinary operation and imparting its stored electric power to the inverter device 111 in power failure, and supplies the electric power of the rectangular wave to the driving system and the control system of the elevator from the inverter device 111 in both the ordinary operation and the power failure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator power supply system having a function of supplying power to a drive system and a control system of an elevator by a rectangular wave.

  Normally, an elevator uses a three-phase AC power source, which is a commercial power source, to supply required power to a drive system such as a hoisting machine and a control system such as a control panel. Furthermore, when a power failure occurs in the commercial power supply, the car is operated to the nearest floor using the electric power stored in the battery (see, for example, Patent Document 1).

  FIG. 12 shows the configuration of a conventional elevator power supply system. Reference numeral 101 in the figure denotes a commercial power source (three-phase AC power source), and a configuration is shown in which required power is supplied from the commercial power source 101 to an elevator drive system and a control system.

  As an elevator drive system, a converter 102, a smoothing capacitor 103, an inverter device 104, and a hoisting machine 105 are provided. A sinusoidal AC voltage supplied from the commercial power supply 101 is applied to the inverter device 104 via the converter 102 and the smoothing capacitor 103. In the inverter device 104, this is replaced with a frequency and voltage necessary for driving the hoisting machine 105. A car 11 and a counterweight 12 are suspended from the hoisting machine 105 via a rope 13. When the hoisting machine 105 is rotationally driven by the inverter device 104, the car 11 and the counterweight 12 are lifted and lowered in a slidable manner via the rope 13.

  The AC voltage of the sine wave supplied from the commercial power supply 101 is converted into a required voltage via the control system power supply circuit 106 and then supplied to the control power supply circuits 107 to 108 for various control devices.

Further, a charger 201, a battery 202, and a power supply exchange circuit 203 are provided in parallel with the elevator drive system and the control system for backup operation during a power failure. Electric power is stored in the battery 202 via the charger 201 during normal operation, and the electric power stored in the battery 202 is supplied to the drive system and the control system during a power failure. 204 and 205 in the figure are switches for switching electric power, which are turned on at the time of power failure.
JP 2005-126171 A

  As described above, the conventional power supply system is configured to supply power with a sine wave during normal operation and during a power failure. In this case, although the elevator can be driven stably with a sine wave, there is a problem such as a delay in the backup operation of the elevator due to a momentary power failure (instantaneous power failure) due to poor response during a power failure.

  The present invention has been made in view of the above points, and can stably supply power to a drive system and a control system of an elevator and quickly switch to backup operation when a power failure occurs to rescue a passenger. It is an object of the present invention to provide an elevator power supply system that can be used.

  The present invention relates to an elevator power supply system that supplies required power to an elevator drive system and a control system, and converts an electric power of a sine wave supplied from a commercial power source into a rectangular wave and outputs it, and a normal operation A battery that stores the power of the commercial power supply at the same time and supplies the stored power to the inverter device during a power failure, and supplies rectangular wave power from the inverter device during normal operation and during a power failure. To do.

  According to the present invention, power can be stably supplied to the drive system and control system of the elevator with the configuration in which power is supplied with a rectangular wave, and when a power failure occurs, the passenger can be rescued by quickly switching to backup operation. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of an elevator power supply system according to a first embodiment of the present invention, and shows a configuration for supplying required power to an elevator drive system and a control system. Reference numeral 101 in the figure denotes a commercial power supply that supplies sine wave power.

  As an elevator drive system, a converter 102, a smoothing capacitor 103, an inverter device 104, and a hoisting machine 105 are provided. Converter 102 converts an AC voltage into a DC voltage. Smoothing capacitor 103 smoothes the output voltage of converter device 102. The inverter device 104 converts the DC voltage supplied from the converter 102 through the smoothing capacitor 103 into an AC voltage having an arbitrary frequency and voltage value by PWM (Pulse Width Modulation) control, and uses this as driving power to take up the hoisting machine 105. To supply.

  A sheave (not shown) is attached to the rotating shaft of the hoisting machine 105, and the car 11 and the counterweight 12 are lifted and lowered in a hoistway manner through a rope 13 wound around the sheave.

  Further, as an elevator control system, a power supply circuit 106 and control power supply circuits 107 to 108 for various control devices are provided. The electric power supplied to the control system is converted into required electric power through the power supply circuit 106 and then supplied to the control power supply circuits 107 to 108 for various control devices.

  Here, in the present embodiment, a power supply device 109 having a rectangular wave output function is provided. The power supply device 109 includes a rectifier 110, an inverter device 111, a charger 112, and a battery 113.

  The rectifier 110 shapes the waveform of the sine wave power supplied from the commercial power source 101. The inverter device 111 converts the sine wave power rectified by the rectifier 110 into a rectangular wave set in advance and outputs it. The charger 112 performs charging control for the battery 113.

  In such a configuration, the sine wave power supplied from the commercial power supply 101 is waveform rectified by the rectifier 110 provided in the power supply device 109 and then converted into a rectangular wave via the inverter device 111. The rectangular wave power output from the inverter device 111 is applied to the drive system and control system of the elevator. Thereby, the hoisting machine 105 is rotationally driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and necessary power is supplied to the control power supply circuits 107 to 108 of various control devices through the power supply circuit 106. Thus, the elevator is normally operated.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112.

  Here, for example, when the commercial power supply 101 fails due to some cause such as an earthquake, the power supply device 109 switches to the battery 113 to supply power. At the time of a power failure, the car 11 is moved to the nearest floor using the electric power stored in the battery 113. In this case, since power is supplied by a rectangular wave, the response is better than that of a sine wave, and it is possible to quickly switch to a backup operation.

  As described above, according to the first embodiment of the present invention, the configuration in which power is supplied with a rectangular wave can stably supply power to the drive system and control system of the elevator, and backup operation can be performed when a power failure occurs. It is possible to rescue passengers by switching to swiftly. Further, by adopting a configuration in which power is supplied with a rectangular wave during normal operation and during a power failure, the circuit configuration can be simplified and the cost can be reduced.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  In the first embodiment, the power is supplied by a rectangular wave during normal operation and at the time of a power failure. However, in the second embodiment, power is supplied by a sine wave during normal operation, and the power is supplied by a rectangular wave at the time of a power failure. The power supply is performed by switching to a wave.

  FIG. 2 is a block diagram showing a configuration of an elevator power supply system according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 1 in the said 1st Embodiment, and the description shall be abbreviate | omitted.

  In the second embodiment, a switch 114, a power failure detection circuit 115, and a switch drive circuit 116 are provided in addition to the configuration shown in FIG.

  The switch 114 switches between the commercial power supply 101 and the inverter device 111 according to a switch signal output from the switch drive circuit 116. The power failure detection circuit 115 detects that the commercial power source 101 has failed. The switch drive circuit 116 outputs a switch signal to the switch 114 when a power failure is detected by the power failure detection circuit 115 and switches from the commercial power supply 101 to the inverter device 111.

  In such a configuration, during normal operation, the switch 114 is switched to the commercial power supply 101 side, and sine wave power is supplied from the commercial power supply 101 to the drive system and control system of the elevator. As a result, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and the required power is supplied to the control power supply circuits 107 to 108 of the various control devices through the power supply circuit 106. Driven.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112.

  Here, when a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115, the switching device driving circuit 116 switches the switching device 114 to the power supply device 109 side, and the inverter device 111 switches to the elevator drive system and control system. On the other hand, rectangular wave power is supplied. As a result, the car 11 can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation and rescue the passenger.

  As described above, according to the second embodiment of the present invention, in addition to the effect that the passenger can be rescued by quickly switching to the backup operation at the time of a power failure by the output of the rectangular wave as in the first embodiment, the normal operation is performed. Occasionally, by supplying power with a sine wave, there is an advantage that the elevator can be driven and controlled relatively stably to ensure riding comfort.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  In the third embodiment, when an abnormality occurs in the rectangular wave output of the inverter device, power is supplied by switching to a commercial power source.

  FIG. 3 is a block diagram showing a configuration of an elevator power supply system according to a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 1 in the said 1st Embodiment, and the description shall be abbreviate | omitted.

  In the third embodiment, in addition to the configuration shown in FIG. 1, a SW (switch) 117, an output detector (sensor) 118a, an output detection circuit 118, and a protection circuit 119 are provided.

  The SW 117 switches between the commercial power supply 101 and the inverter device 111 in accordance with a switching signal output from the protection circuit 119. The output detector 118a is installed on the inverter device 111 side, and detects the output of a rectangular wave. The output detection circuit 118 receives the detection signal of the output detector 118a and detects whether there is an output abnormality of the inverter device 111, that is, an abnormality of the rectangular wave output. The protection circuit 119 outputs a switching signal to the SW 117 when the output abnormality of the inverter device 111 is detected by the output detection circuit 118, and performs switching from the inverter device 111 to the commercial power source 101.

  In such a configuration, SW 117 is switched to the power supply device 109 side during both normal operation and power failure, and rectangular wave power is supplied from the inverter device 111 to the drive system and control system of the elevator. During normal operation, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and necessary power is supplied to the control power supply circuits 107 to 108 of various control devices through the power supply circuit 106, so that the elevator Operated normally.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112. When a power failure occurs, the car 11 is moved to the nearest floor using the electric power stored in the battery 113. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, as described above, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, if an abnormality occurs in the rectangular wave output due to the failure of the inverter device 111 during normal operation, the protection circuit 119 is activated through the output detector 118a and the output detection circuit 118, and the SW 117 is output by the switching signal output from the protection circuit 119. Is switched to the commercial power supply 101 side. As a result, electric power is supplied as a sine wave to the drive system and control system of the elevator.

  As described above, according to the third embodiment of the present invention, in addition to the effect that the rectangular wave output can be quickly switched to the backup operation at the time of a power failure and the passenger can be rescued by the output of the rectangular wave as in the first embodiment. When some abnormality occurs in the output, there is an advantage that the operation can be continued without stopping the elevator by switching to the sine wave power supply.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.

  In the fourth embodiment, a warning is issued by estimating the life of an inverter device that outputs a rectangular wave in a configuration in which electric power is supplied by a rectangular wave during a power failure to an elevator drive system and a control system. is there.

  FIG. 4 is a block diagram showing a configuration of an elevator power supply system according to a fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 1 in the said 1st Embodiment, and the description shall be abbreviate | omitted.

  In the fourth embodiment, a life estimation circuit 120 and a notification circuit 120a are provided in addition to the configuration of FIG. The life estimation circuit 120 estimates the life of the inverter device 111. The warning circuit 120a issues a warning based on the estimation result of the life estimation circuit 120.

  In such a configuration, rectangular wave power is supplied from the inverter device 111 to the drive system and control system of the elevator during both normal operation and power failure. During normal operation, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and necessary power is supplied to the control power supply circuits 107 to 108 of various control devices through the power supply circuit 106, so that the elevator Operated normally.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112. When a power failure occurs, the car 11 is moved to the nearest floor using the electric power stored in the battery 113. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, as described above, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, the lifetime of the rectangular wave output inverter device 111 is estimated by the lifetime estimation circuit 120. Examples of the life estimation method include a method based on the usage time of the inverter device 111 and a method based on the temperature of the inverter device 111. That is, when the usage time of the inverter device 111 reaches a predetermined replacement reference time, it is determined that the life has been reduced to the extent that replacement is required. In addition, when the temperature of the inverter device 111 reaches a predetermined temperature or more, it is possible that a circuit element such as a switching element has deteriorated, and it is determined that the life has been reduced to the extent that replacement is required. .

  If the life has been reduced to the extent that replacement is required, a warning circuit 120a warns that effect. The warning circuit 120a is composed of a warning lamp, for example, and is lit by a signal output from the life estimation circuit 120. As a result, the maintenance staff can grasp the life of the inverter device 111 and take measures such as replacement.

  Note that the warning circuit 120a may have a communication function, and for example, may be configured to notify a monitoring room in a building or an external remote monitoring center.

  Thus, according to the fourth embodiment of the present invention, in addition to the effect that the rectangular wave output can be quickly switched to the backup operation at the time of a power failure and the passenger can be rescued, similarly to the first embodiment, the inverter device By issuing a warning by estimating the lifetime of 111, there is an advantage that safety can be ensured by taking measures such as replacement before the inverter device 111 breaks down.

  In addition, although demonstrated here on the assumption of the structure of the said 1st Embodiment, as shown in the structure of the said 2nd Embodiment, that is, as shown in FIG. The present invention can also be applied to a configuration in which power is supplied by switching to a rectangular wave.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described.

  In the fifth embodiment, in a configuration in which electric power is supplied by a rectangular wave at the time of a power failure to an elevator driving system and a control system, the life of an inverter device that outputs the rectangular wave is estimated, and the output control of the elevator driving system is performed. Is to do.

  FIG. 5 is a block diagram showing a configuration of an elevator power supply system according to a fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 1 in the said 1st Embodiment, and the description shall be abbreviate | omitted.

  In the fifth embodiment, a life estimation circuit 120 and an output control circuit 121 are provided in addition to the configuration of FIG. The life estimation circuit 120 estimates the life of the inverter device 111. The output control circuit 121 performs output control on the inverter device 104 that is an elevator drive system based on the estimation result of the life estimation circuit 120.

  In such a configuration, rectangular wave power is supplied from the inverter device 111 to the drive system and control system of the elevator during both normal operation and power failure. During normal operation, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and necessary power is supplied to the control power supply circuits 107 to 108 of various control devices through the power supply circuit 106, so that the elevator Operated normally.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112. When a power failure occurs, the car 11 is moved to the nearest floor using the electric power stored in the battery 113. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, as described above, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, the lifetime of the rectangular wave output inverter device 111 is estimated by the lifetime estimation circuit 120. As the lifetime estimation method, as described in the fourth embodiment, for example, there is a method of making a determination based on the usage time or temperature rise of the inverter device 111.

  When the life of the inverter device 111 is approaching to the extent that requires replacement, an output control signal is output from the output control circuit 121 to the inverter device 104 of the elevator drive system. As a result, the output of the inverter device 104 is kept low by a predetermined level, and the hoisting machine 105 is driven slower than usual.

  As described above, according to the fifth embodiment of the present invention, in addition to the effect that the rectangular wave output can be quickly switched to the backup operation in the event of a power failure and the passenger can be rescued in the same manner as the first embodiment, the inverter device By controlling the output of the drive system of the elevator when the service life of the 111 is reduced, there is an advantage that the operation of the elevator can be continued as long as possible until a maintenance person comes.

  In addition, when the lifetime of the inverter apparatus 111 has fallen, it is preferable to issue a warning like the said 4th Embodiment.

  In addition, the description has been made on the premise of the configuration of the first embodiment, but the configuration of the second embodiment, that is, as shown in FIG. The present invention can also be applied to a configuration in which power is supplied by switching to a rectangular wave.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described.

  In the sixth embodiment, when power cannot be supplied due to a failure of the inverter device at the time of a power failure, the power of the battery is caused to flow through the brake circuit by operating a switch to drive the elevator.

  FIG. 6 is a block diagram showing a configuration of an elevator power supply system according to a sixth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the part same as the structure of FIG. 2 in the said 2nd Embodiment, and the description shall be abbreviate | omitted.

  In the sixth embodiment, in addition to the configuration shown in FIG. 2, an external SW (switch) 122, a step-up / down circuit 123, and a brake circuit 124 are provided. The external SW 122 is a manual switch for flowing the electric power of the battery 113 to the brake circuit 124. The step-up / step-down circuit 123 performs step-up / step-down control of the electric power of the battery 113 to a level necessary for driving the brake circuit 124. The brake circuit 124 drives an electromagnetic brake 105 a provided in the hoisting machine 105.

  In such a configuration, during normal operation, the switch 114 is switched to the commercial power supply 101 side, and sine wave power is supplied from the commercial power supply 101 to the drive system and control system of the elevator. As a result, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and the required power is supplied to the control power supply circuits 107 to 108 of the various control devices through the power supply circuit 106. Driven.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115, the switch 114 is switched to the power supply device 109 side by the switch drive circuit 116, and the elevator drive system and control system are utilized using the battery 113. Is supplied with rectangular wave power. As a result, the car 11 can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, as described above, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, the external SW 122 is operated when the inverter device 111 breaks down and cannot supply power during a power failure. When the external SW 122 is operated, the power of the battery 113 is converted to a predetermined level via the step-up / down circuit 123 and then applied to the brake circuit 124. As a result, the electromagnetic brake 105a of the hoisting machine 105 is released, and the car 11 can be moved to the nearest floor using the unbalanced force between the car 11 and the counterweight 12.

  As described above, according to the sixth embodiment of the present invention, in addition to the effect that the passenger can be rescued by quickly switching to the backup operation at the time of a power failure by the output of the rectangular wave as in the first embodiment, the external SW 122 By providing the function of flowing the battery power to the brake circuit by the operation of, the rescue operation can be performed even when the power cannot be supplied in the event of a power failure.

  Here, the description has been made on the premise of the configuration of the second embodiment. However, the configuration of the first embodiment, that is, as shown in FIG. Even if it is a structure, it is applicable.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described.

  In the seventh embodiment, the battery is charged by using regenerative power of the elevator in a configuration in which electric power is supplied by a rectangular wave at the time of a power failure to the drive system and control system of the elevator.

  FIG. 7 is a block diagram showing a configuration of an elevator power supply system according to a seventh embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the part same as the structure of FIG. 2 in the said 2nd Embodiment, and the description shall be abbreviate | omitted.

  In the seventh embodiment, in the configuration of FIG. 2 described above, a charger 125 is provided instead of the charger 112 directly connected to the commercial power supply 101, and a regenerative resistor 126 for feeding regenerative power to the charger 125. And a switching element 127 is provided. The regenerative resistor 126 is a resistor for converting regenerative power into heat energy. The switching element 127 is turned on during the regenerative operation and causes the regenerative power flowing backward from the inverter device 104 to flow through the regenerative resistor 126.

  In such a configuration, during normal operation, the switch 114 is switched to the commercial power supply 101 side, and sine wave power is supplied from the commercial power supply 101 to the drive system and control system of the elevator. As a result, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and the required power is supplied to the control power supply circuits 107 to 108 of the various control devices through the power supply circuit 106. Driven.

  Here, regenerative electric power generated during operation of the elevator is fed back to the power supply device 109 and supplied to the battery 113.

  That is, for example, when the elevator car 11 moves downward in the hoistway, if the load of the car 11 at that time is heavier than the counterweight 12, no power is required, so the motor of the hoisting machine 105 generates power. It will function as a machine and regenerative power will be generated. Further, when the car 11 moves upward, if the load on the car 11 at that time is lighter than the counterweight 12, no power is required, so regenerative power is generated. Thus, driving the car 11 without requiring power is called “regenerative operation”, and conversely, driving requiring power is called “power running operation”.

  Since the electric power generated during the regenerative operation flows to the regenerative resistor 126 via the switching element 127, this is supplied to the charger 125 to charge the battery 113. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115, the switch 114 is switched to the power supply device 109 side by the switch drive circuit 116, and the elevator drive system and control system are utilized using the battery 113. Is supplied with rectangular wave power. As a result, the car 11 can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Thus, according to the seventh embodiment of the present invention, in addition to the effect that the passenger can be rescued by quickly switching to the backup operation at the time of a power failure by the output of the rectangular wave as in the first embodiment, There is an advantage that the battery can be efficiently charged by using regenerative power.

  Here, the description has been made on the premise of the configuration of the second embodiment. However, the configuration of the first embodiment, that is, as shown in FIG. Even if it is a structure, it is applicable.

(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described.

  In the eighth embodiment, a voltage level adjusting function is provided in a configuration in which electric power is supplied by a rectangular wave to a drive system and a control system of an elevator during a power failure.

  FIG. 8 is a block diagram showing a configuration of an elevator power supply system according to an eighth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the part same as the structure of FIG. 2 in the said 2nd Embodiment, and the description shall be abbreviate | omitted.

  In the eighth embodiment, a voltage regulator 128 is provided in addition to the configuration of FIG. The voltage regulator 128 is provided at the output terminal of the switch 114 and adjusts the voltage level of the electric power supplied from the commercial power source 101 or the inverter device 111 to the drive system and control system of the elevator.

  In such a configuration, during normal operation, the switch 114 is switched to the commercial power supply 101 side, and sine wave power is supplied from the commercial power supply 101 to the drive system and control system of the elevator. As a result, the hoisting machine 105 is driven through the converter 102, the smoothing capacitor 103, and the inverter device 104, and the required power is supplied to the control power supply circuits 107 to 108 of the various control devices through the power supply circuit 106. Driven.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115, the switch 114 is switched to the power supply device 109 side by the switch drive circuit 116, and the elevator drive system and control system are utilized using the battery 113. Is supplied with rectangular wave power. As a result, the car 11 can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, even when the voltage fluctuation of the sine wave supplied from the commercial power supply 101 is large or when the voltage fluctuation of the rectangular wave supplied from the power supply device 109 occurs at the time of a power failure, the voltage level is adjusted by the voltage regulator 128. After being adjusted to the value, it can be supplied to the drive system and control system of the elevator.

  As described above, according to the eighth embodiment of the present invention, in addition to the effect that the rectangular wave output can be quickly switched to the backup operation at the time of a power failure and the passenger can be rescued by the output of the rectangular wave as in the first embodiment. However, there is an advantage that the elevator can be stably driven by always maintaining a constant voltage.

  Here, the description has been made on the premise of the configuration of the second embodiment. However, the configuration of the first embodiment, that is, as shown in FIG. Even if it is a structure, it is applicable.

(Ninth embodiment)
Next, a ninth embodiment of the present invention will be described.

  In the ninth embodiment, power is supplied by a rectangular wave to the drive systems and control systems of the elevators of the A system and the B system at the time of a power failure.

  FIG. 9 is a block diagram showing a configuration of an elevator power supply system according to a ninth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the part same as the structure of FIG. 2 in the said 2nd Embodiment, and the description shall be abbreviate | omitted.

  In the ninth embodiment, each elevator of the A system and the B system is configured to be driven simultaneously by one power supply device 109. The A system elevator includes a converter 102A, a smoothing capacitor 103A, an inverter device 104A, and a hoisting machine 105A as a drive system, and a power supply circuit 106A and control power supply circuits 107A to 108A as a control system. A car 11A and a counterweight 12A are suspended from the hoisting machine 105A via a rope 13A, and the car 11A and the counterweight 12A are lifted and lowered in a hoistway in a hoistway by the rotational drive of the hoisting machine 105A. Operate.

  The B system elevator has the same configuration, and includes a converter 102B, a smoothing capacitor 103B, an inverter device 104B, and a hoisting machine 105B as a drive system, and a power supply circuit 106B and control power supply circuits 107B to 108B as a control system. A car 11B and a counterweight 12B are suspended from the hoisting machine 105B via a rope 13B. The car 11B and the counterweight 12B are lifted and lowered in a hoistway in a hoistway by the rotational drive of the hoisting machine 105B. Operate.

  In such a configuration, during normal operation, the switch 114 is switched to the commercial power supply 101 side, and sinusoidal power is supplied to the drive systems and control systems of the elevators of the A system and the B system. As a result, in the elevator of system A, the hoisting machine 105A is driven through the converter 102A, the smoothing capacitor 103A, and the inverter device 104A, and necessary power is supplied to the control power supply circuits 107A to 108A of various control devices through the power supply circuit 106A. Thus, the elevator is normally operated. The same applies to the elevator of the B system, and the hoisting machine 105B is driven through the converter 102B, the smoothing capacitor 103B, and the inverter device 104B, and necessary power is supplied to the control power supply circuits 107B to 108B of the various control devices through the power supply circuit 106B. Once supplied, the elevator is normally operated.

  In the meantime, the power supply device 109 stores the power of the commercial power supply 101 in the battery 113 via the charger 112. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115, the switcher 114 is switched to the power supply device 109 side by the switch drive circuit 116, and each of the A system and the B system is utilized using the battery 113. Rectangular wave power is supplied to the drive system and control system of the elevator. Thus, the cars 11A and 11B can be moved to the nearest floors. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  As described above, according to the ninth embodiment of the present invention, the rectangular wave power is supplied to a plurality of elevators in the same manner as in the first embodiment, so that the backup operation can be quickly performed in the event of a power failure. You can switch passengers to rescue them.

  Here, the description has been made on the premise of the configuration of the second embodiment. However, the configuration of the first embodiment, that is, as shown in FIG. Even if it is a structure, it is applicable.

  Further, in the example of FIG. 9, only two elevators are shown, but the same applies even when there are more elevators.

(Tenth embodiment)
Next, a tenth embodiment of the present invention will be described.

  In the tenth embodiment, a power supply device having an inverter device is provided for each elevator to individually supply power by a rectangular wave at the time of a power failure, and when a power supply device corresponding to a certain elevator fails, another elevator Is used to supply power to both elevators.

  FIG. 10 is a block diagram showing a configuration of an elevator power supply system according to a tenth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 9 in the said 9th Embodiment, and the description shall be abbreviate | omitted.

  In the tenth embodiment, the elevators of the A system and the B system are individually driven by the power supply devices 109A and 109B corresponding thereto. In the system A elevator, the power supply device 109A includes a rectifier 110A for generating and outputting a rectangular wave, an inverter device 111A, a charger 112A for supplying power during a power failure, and a battery 113A. The rectifier 110A shapes the AC voltage of the commercial power supply 101. The inverter device 111A variably controls the frequency and voltage level of the sine wave AC voltage rectified by the rectifier 110A to generate and output a rectangular wave AC voltage.

  As in the second embodiment (FIG. 2), a switch 114A, a power failure detection circuit 115A, and a switch drive circuit 116A are provided as a configuration for switching power during a power failure. The switch 114A switches between the sine wave output of the commercial power supply 101 and the rectangular wave output of the power supply device 109A in accordance with a switch signal output from the switch drive circuit 116A. The power failure detection circuit 115A detects that the commercial power source 101 has failed. The switch drive circuit 116A outputs a switch signal to the switch 114A when a power failure is detected by the power failure detection circuit 115A, and switches from the sine wave output of the commercial power supply 101 to the rectangular wave output of the power supply device 109A.

  The same applies to the B system elevator, and the power supply device 109B includes a rectifier 110B for generating and outputting a rectangular wave, an inverter device 111B, a charger 112B for supplying power during a power failure, and a battery 113B. . The inverter device 111B generates and outputs a rectangular wave AC voltage by variably controlling the frequency and voltage level of the sine wave AC voltage rectified by the rectifier 110B.

  In addition, as a configuration for switching power during a power failure, a switch 114B, a power failure detection circuit 115B, and a switch drive circuit 116B are provided. The switch 114B switches between the sine wave output of the commercial power supply 101 and the rectangular wave output of the power supply device 109B according to the switch signal output from the switch drive circuit 116B. The power failure detection circuit 115B detects that the commercial power source 101 has failed. The switch drive circuit 116B outputs a switch signal to the switch 114B when a power failure is detected by the power failure detection circuit 115B, and switches from the sine wave output of the commercial power supply 101 to the rectangular wave output of the power supply device 109B.

  Further, an output detection circuit 129, output circuit breakers 130A and 130B, and a power supply contactor 131 are provided as a configuration for switching between the A system power supply system and the B system power supply system.

  The output detection circuit 129 uses an output detector (sensor) 129A provided at the output end of the power supply device 109A and an output detector (sensor) 129B provided at the output end of the power supply device 109B, and outputs each of them. The status is monitored. The output circuit breaker 130A is opened / closed by the output signal of the output detection circuit 129, and cuts off the electric power supplied from the A system power supply system in the opened state. The output circuit breaker 130B opens and closes according to the output signal of the output detection circuit 129, and cuts off the electric power supplied from the B system power supply system in the open state.

  The power supply contactor 131 is interposed between the A-system power supply system and the B-system power supply system, opens and closes according to the output signal of the output detection circuit 129, and is supplied from one power supply system in a closed state. The supplied electric power is supplied to the other elevator.

  In such a configuration, when the power supply systems of the A system and the B system are normal, the output circuit breakers 130A and 130B are in a closed state, and the power supply contactor 131 is in an open state. Power is supplied.

  That is, during normal operation, the switches 114A and 114B are switched to the commercial power supply 101 side, and sinusoidal power is supplied to the drive systems and control systems of the elevators of the A system and the B system. As a result, in the elevator of system A, the hoisting machine 105A is driven through the converter 102A, the smoothing capacitor 103A, and the inverter device 104A, and necessary power is supplied to the control power supply circuits 107A to 108A of various control devices through the power supply circuit 106A. Thus, the elevator is normally operated. The same applies to the elevator of the B system, and the hoisting machine 105B is driven through the converter 102B, the smoothing capacitor 103B, and the inverter device 104B, and necessary power is supplied to the control power supply circuits 107B to 108B of the various control devices through the power supply circuit 106B. Once supplied, the elevator is normally operated.

  In the meantime, in the power supply apparatus 109A, the power of the commercial power supply 101 is stored in the battery 113A through the charger 112A. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115A, the switch 114A is switched to the power supply device 109A side by the switch drive circuit 116A, and the drive system of the A system elevator using the battery 113A A rectangular wave power is supplied to the control system. Thereby, the car 11A can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  The same applies to the power supply device 109B, and the power of the commercial power supply 101 is stored in the battery 113B through the charger 112B. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115B, the switching device drive circuit 116B switches the switch 114B to the power supply device 109B side, and uses the battery 113B to drive the B system elevator drive system. A rectangular wave power is supplied to the control system. Thereby, the car 11B can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, at the time of a power failure, when one of the power supply systems of the A system and the B system fails, the other power supply system is used.

  That is, for example, if the A system power supply system fails, the output detection circuit 129 opens the output circuit breaker 130A to shut off the A system power supply system and closes the power supply contactor 131 to close the B system. Is connected to the elevator of the A system. Thereby, the elevator of A system | strain can be moved by the electric power supply of the rectangular wave output from the electric power supply apparatus 109B.

  As described above, according to the tenth embodiment of the present invention, similarly to the first embodiment, the output of the rectangular wave can quickly switch to the backup operation at the time of a power failure and rescue the passenger, and further supports each elevator. In the configuration in which the power supply device is provided, even when a power supply device at the time of a power failure breaks down, the passenger can be rescued by driving the elevator using another power supply device.

  Here, the description has been made on the premise of the configuration of the second embodiment. However, the configuration of the first embodiment, that is, as shown in FIG. Even if it is a structure, it is applicable.

  Further, in the example of FIG. 10, only two elevators are illustrated, but the same applies even when there are a larger number of elevators.

(Eleventh embodiment)
Next, an eleventh embodiment of the present invention will be described.

  In the eleventh embodiment, a power supply device having an inverter device is provided for each elevator to individually supply power by a rectangular wave at the time of a power failure, and the battery capacity of the power supply device corresponding to a certain elevator is insufficient. In this case, power is supplied to the elevator by switching to a power supply device corresponding to another elevator at a predetermined timing.

  FIG. 11 is a block diagram showing a configuration of an elevator power supply system according to an eleventh embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 10 in the said 10th Embodiment, and the description shall be abbreviate | omitted.

  The basic configuration is the same as that of the tenth embodiment (FIG. 10), but here a battery capacity detection circuit 132 is provided instead of the output detection circuit 129. The battery capacity detection circuit 132 monitors the capacity of the battery 113A provided in the power supply apparatus 109A and the capacity of the battery 113B provided in the power supply apparatus 109B, and when one battery capacity is inadequate at the time of a power failure The output circuit breakers 130A and 130B and the power supply contactor 131 are controlled to open and close to switch the power supply.

  In such a configuration, when the power supply systems of the A system and the B system are normal, the output circuit breakers 130A and 130B are in a closed state, and the power supply contactor 131 is in an open state. Power is supplied.

  That is, during normal operation, the switches 114A and 114B are switched to the commercial power supply 101 side, and sinusoidal power is supplied to the drive systems and control systems of the elevators of the A system and the B system. As a result, in the elevator of system A, the hoisting machine 105A is driven through the converter 102A, the smoothing capacitor 103A, and the inverter device 104A, and necessary power is supplied to the control power supply circuits 107A to 108A of various control devices through the power supply circuit 106A. Thus, the elevator is normally operated. The same applies to the elevator of the B system, and the hoisting machine 105B is driven through the converter 102B, the smoothing capacitor 103B, and the inverter device 104B, and necessary power is supplied to the control power supply circuits 107B to 108B of the various control devices through the power supply circuit 106B. Once supplied, the elevator is normally operated.

  In the meantime, in the power supply apparatus 109A, the power of the commercial power supply 101 is stored in the battery 113A through the charger 112A. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115A, the switch 114A is switched to the power supply device 109A side by the switch drive circuit 116A, and the drive system of the A system elevator using the battery 113A A rectangular wave power is supplied to the control system. Thereby, the car 11A can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  The same applies to the power supply device 109B, and the power of the commercial power supply 101 is stored in the battery 113B through the charger 112B. When a power failure of the commercial power supply 101 is detected by the power failure detection circuit 115B, the switching device drive circuit 116B switches the switch 114B to the power supply device 109B side, and uses the battery 113B to drive the B system elevator drive system. A rectangular wave power is supplied to the control system. Thereby, the car 11B can be moved to the nearest floor. In this case, since electric power is supplied from the inverter device 111 with a rectangular wave, it is possible to quickly switch to the backup operation at the time of a power failure and rescue the passenger.

  Here, at the time of a power failure, the power supply is switched when the battery capacity of one of the A system and the B system is insufficient.

  That is, for example, when the capacity of the A-system battery 113A is insufficient, it is assumed that the capacity is less than a predetermined capacity required for the rescue operation of the elevator. In such a case, after the rescue operation of the B system elevator, the output detection circuit 129 opens the output circuit breaker 130B to shut off the B system power supply system, and closes the power supply contactor 131 to close the B system power supply system. Connect the power supply system to the A system elevator. Thereby, the elevator of A system | strain can be moved by the electric power supply of the rectangular wave output from the electric power supply apparatus 109B.

  As described above, according to the eleventh embodiment of the present invention, similarly to the first embodiment, the output of the rectangular wave can quickly switch to the backup operation at the time of a power failure and rescue the passenger, and corresponds to each elevator. In the configuration provided with the power supply device, even when the battery capacity of the power supply device corresponding to the elevator at the time of a power failure is insufficient, by supplying power from the power supply device corresponding to another elevator, Passengers can be rescued.

  Here, the description has been made on the premise of the configuration of the second embodiment. However, the configuration of the first embodiment, that is, as shown in FIG. Even if it is a structure, it is applicable.

  Further, in the example of FIG. 11, only two elevators are illustrated, but the same applies even when there are a larger number of elevators.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various forms can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

FIG. 1 is a block diagram showing a configuration of an elevator power supply system according to a first embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of an elevator power supply system according to the second embodiment of the present invention. FIG. 3 is a block diagram showing a configuration of an elevator power supply system according to a third embodiment of the present invention. FIG. 4 is a block diagram showing a configuration of an elevator power supply system according to a fourth embodiment of the present invention. FIG. 5 is a block diagram showing a configuration of an elevator power supply system according to a fifth embodiment of the present invention. FIG. 6 is a block diagram showing a configuration of an elevator power supply system according to a sixth embodiment of the present invention. FIG. 7 is a block diagram showing a configuration of an elevator power supply system according to a seventh embodiment of the present invention. FIG. 8 is a block diagram showing a configuration of an elevator power supply system according to an eighth embodiment of the present invention. FIG. 9 is a block diagram showing a configuration of an elevator power supply system according to a ninth embodiment of the present invention. FIG. 10 is a block diagram showing a configuration of an elevator power supply system according to a tenth embodiment of the present invention. FIG. 11 is a block diagram showing a configuration of an elevator power supply system according to an eleventh embodiment of the present invention. FIG. 12 is a block diagram showing the configuration of a conventional elevator power supply system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Car, 12 ... Counterweight, 13 ... Rope, 101 ... Commercial power supply, 102 ... Converter, 103 ... Smoothing capacitor, 104 ... Inverter device, 105 ... Hoisting machine, 106 ... Power supply circuit, 107 ... Control power supply circuit, DESCRIPTION OF SYMBOLS 108 ... Control power supply circuit, 109 ... Electric power supply apparatus, 110 ... Rectifier, 111 ... Inverter apparatus, 112 ... Charger, 113 ... Battery, 114 ... Switch, 115 ... Power failure detection circuit, 116 ... Switch drive circuit, 117 DESCRIPTION OF SYMBOLS SW, 118 ... Output detection circuit, 118a ... Output detector (sensor), 119 ... Protection circuit, 120 ... Life estimation circuit, 120a ... Warning circuit, 121 ... Output control circuit, 122 ... External SW, 123 ... Buck-boost circuit 124 ... Brake circuit 125 ... Charger 126 ... Regenerative resistor 127 ... Switching element 128 ... Voltage regulator 129 ... output detection circuit, 129 ... output detection circuit, 129A, 129B ... output detector (sensor), 130A, 130B ... output breaker, 131 ... power supply contactor, 132 ... battery capacity detecting circuit.

Claims (11)

In the elevator power supply system that supplies the required power to the drive system and control system of the elevator,
An inverter device that converts a sine wave power supplied from a commercial power source into a rectangular wave and outputs it;
A battery that stores the power of the commercial power source during normal operation and supplies the stored power to the inverter device during a power failure,
An elevator power supply system that supplies rectangular wave power from the inverter device during both normal operation and power failure. Comprising a switching device for switching between the commercial power source and the inverter device;
The rectangular wave power is supplied from the commercial power source during normal operation, the battery is charged, and the inverter is switched to the inverter device by the switch during a power failure to supply the rectangular wave power. Elevator power supply system. An output detection circuit for detecting an output abnormality of the inverter device;
The elevator power supply system according to claim 1, further comprising a switch that switches to the commercial power supply when an output abnormality of the inverter device is detected by the output detection circuit. A lifetime estimation circuit for estimating the lifetime of the inverter device;
The elevator power supply system according to claim 1, further comprising a warning circuit that issues a warning to the outside based on an estimation result of the life estimation circuit. A lifetime estimation circuit for estimating the lifetime of the inverter device;
The elevator power supply system according to claim 1, further comprising: an output control circuit that performs output control of the drive system of the elevator based on an estimation result of the life estimation circuit.   2. The elevator power supply system according to claim 1, further comprising a switch for causing the battery power to flow to a brake circuit provided in the drive system of the elevator during a power failure.   The elevator power supply system according to claim 1, further comprising a charger that charges the battery by using electric power generated during regenerative operation of the elevator.   The elevator power supply system according to claim 1, further comprising a voltage regulator for adjusting a voltage level of power supplied from the commercial power source or the inverter device to the drive system and control system of the elevator. .   The elevator power supply system according to claim 1, wherein a power supply device having the inverter device is provided in common for a drive system and a control system of a plurality of elevators.   A power supply device having the above inverter device is separately provided for a drive system and a control system of a plurality of elevators. When a power supply device corresponding to a certain elevator fails, both power supply devices corresponding to other elevators are used. 2. The elevator power supply system according to claim 1, wherein power is supplied to the elevator.   A power supply device having the above inverter device is individually provided for the drive system and control system of a plurality of elevators, and when the battery capacity of the power supply device corresponding to a certain elevator is insufficient, it corresponds to other elevators The elevator power supply system according to claim 1, wherein the power supply device is switched at a predetermined timing to supply power to the elevator.

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