CN101494388B - Multi-power input converter device and uninterruptible power supply system - Google Patents

Abstract

The invention discloses a multi-power input converter device and a uninterruptible power supply system with the same, wherein the multi-power input converter device is provided with an energy storage inductor and an alternating current switch circuit aiming at each input power supply, and then is connected with two energy storage capacitors; when a direct current power supply is input, the direct current-to-direct current power supply conversion mode is realized by controlling the on or off of the alternating current switch circuit; therefore, each alternating current switch circuit independently realizes the function of converting alternating current into direct current and converting direct current into direct current according to the condition of the corresponding input power supply, and maintains the normal power supply of the energy storage capacitor.

Description

Multi-power input converter device and uninterruptible power supply system

technical field

The present invention relates to an uninterruptible power supply system for a multi-power input converter device and the multi-power input converter device, especially to a multi-power input conversion device composed of an AC switch to achieve high power density, and has The utility model relates to an uninterruptible power supply system of the multi-power input conversion device.

Background technique

10 is a block diagram of a traditional uninterruptible power supply system (UPS), which consists of an AC-to-DC and power factor correction device 102, a DC-to-DC device 104, a storage battery 105, a DC-to-AC device 106 and an output filter device 107; when the mains 101 is normally supplied, the control switch 103 is in the cut-off state, and the DC-to-DC device 104 does not work, so the UPS starts as an online mode (Line Mode), which is converted from the AC to DC and power The factor correction device 102 converts the AC power to a DC power, and through the DC to AC device 106 and the output filter device 107, converts it into an AC output power 109 to provide a load; when the commercial power supply 101 is abnormal or interrupted, the control switch 103 That is, it is switched and is in the conduction state. At this time, the UPS starts to be in the standby power mode (Battery Mode). The AC device 106 and the output filter device 107 convert the boosted DC power into an AC output power 109 to provide the load; in this way, the load can be protected by an uninterruptible power supply. In addition, the UPS also has a bypass output path 108 for protecting internal circuits.

From the above, it can be known that the traditional UPS must set the AC to DC and power factor correction devices and DC to DC devices and their individual current paths for the two modes according to the different characteristics of the online mode and the backup power mode. The electronic components and circuit design used in the electric power supply system are relatively complex, with low power density and high cost.

For this reason, in order to save the design of electronic components, some manufacturers have developed an AC-DC input conversion device that combines the AC-to-DC device and the DC-to-DC device circuit. Please refer to Figure 11 for an example design of the AC-DC input conversion device. When the device 110 can be connected to a two-phase power input, it includes four energy storage inductors L11, L12, L21, L22, four semiconductor switching elements S11, S12, S21, S22, and four rectifier diodes D111, D211, D121 , D221, and two energy storage capacitors C1, C2, whether they are working in online mode or standby power mode, control the current path by controlling the conduction and closing of these semiconductor switching elements S11, S12, S21, and S22, And correspondingly achieve the functions of the AC-to-DC circuit and the DC-to-DC circuit in the traditional UPS; if it is applied to a three-phase power input, six energy storage inductors, six semiconductor switching elements, six rectifier diodes and Two energy storage capacitors.

Although the above-mentioned AC-DC input conversion device uses simpler electronic components compared with the traditional UPS to relatively increase the power density, it still uses too many semiconductor switching elements, so the isolation control drive circuits required are also many, how can it be achieved? Further streamlining the controllable switching electronic components used is still a direction to be worked on in the industry.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a multi-power input converter device and an uninterruptible power supply system having the multi-power input converter device, wherein the multi-power input converter device can be used as various The front-end input of intermittent power supply, AC and DC emergency power supply, etc. is composed of relatively simplified controllable switching electronic components, so not only is the control simple, but also the less components used make the manufacturing cost lower.

A main technical means adopted for reaching the above-mentioned purpose is to make the aforementioned multi-power converter device include:

Two input terminals, each input terminal is connected to an independent power supply;

Two energy storage inductors are respectively connected to the two input terminals for storing and releasing electric energy;

a reference ground potential terminal connected to the two independent power sources;

Two AC switch circuits, respectively corresponding to the two energy storage inductors, one end of each AC switch circuit is electrically connected to the corresponding input end of the corresponding energy storage inductor, and the other end of each AC switch circuit is electrically connected to the reference ground potential end;

Two rectifier circuits, respectively electrically connected to the connection nodes of the two AC switching circuits and the corresponding energy storage inductors;

Two energy storage devices each have a positive pole and a negative pole. One of the energy storage devices connects its negative pole to the positive pole of the other energy storage device to form a connection node, and this connection node is connected to the reference ground potential terminal. The two energy storage devices The positive and negative poles on the device that are not connected to each other are connected to the two AC switching circuits through the two rectification circuits;

A control unit is connected to the two AC switch circuits. By controlling the on and off of the two AC switch circuits, the two energy storage inductors store the electric energy from the two input terminals and release the electric energy to the corresponding energy storage devices.

Another main technical means adopted to achieve the above-mentioned purpose is to make the above-mentioned uninterruptible power supply system include:

The two independent power supplies are two independent AC power supplies, the two input terminals are respectively connected to the online terminals of the two independent AC power supplies, and the reference ground potential terminal is connected to the neutral terminal of the two independent AC power supplies;

Two batteries, one end of which is respectively connected to the two input ends, and the other end is connected to the reference ground potential end;

Two switches are respectively connected between the two batteries and corresponding input terminals;

A DC-to-AC device connected to the two energy storage devices, and connected to the positive and negative poles of the two AC switching circuits through the two rectification circuits; and

An output filtering device is connected to the DC-to-AC device.

Another main technical means adopted for reaching the above-mentioned purpose is to make the above-mentioned uninterruptible power supply system include:

The two independent power supplies are two independent AC power supplies, the two input terminals are respectively connected to the online terminals of the two independent AC power supplies, and the reference ground potential terminal is connected to the neutral terminal of the two independent AC power supplies;

A battery, the positive pole and the negative pole of which are respectively connected to the two input terminals;

a switch connected between the battery and one of the input terminals;

A DC-to-AC device connected to the two energy storage devices, and connected to the positive and negative poles of the two AC switching circuits through the two rectification circuits; and

An output filtering device is connected to the DC-to-AC device.

Description of drawings

The beneficial effects of the present invention are:

The above-mentioned technical means mainly achieve the control of the input voltage and current by controlling the on and off of the two AC switching circuits, so that the functions of the power factor correction circuit and the DC-to-DC circuit in the traditional uninterruptible power supply system can be achieved. Compared with the uninterruptible power supply system in the prior art, the electronic components used in the present invention are more compact, so the overall manufacturing cost is lower.

Fig. 1 is the circuit diagram of the first embodiment of the present invention;

2A is a schematic diagram of the current path when the positive half-cycle voltage of the AC power supplies energy to the first and second energy storage inductors when two AC power supplies are connected according to the first embodiment of the present invention;

2B is a schematic diagram of the current path of the first and second energy storage inductors discharging the first energy storage capacitor when two AC power sources are connected according to the first embodiment of the present invention;

2C is a schematic diagram of the current path when the negative half cycle voltage of the AC power supplies energy to the first and second energy storage inductors when two AC power supplies are connected according to the first embodiment of the present invention;

2D is a schematic diagram of the current path of the first and second energy storage inductors discharging the second energy storage capacitor when two AC power sources are connected according to the first embodiment of the present invention;

3A is a schematic diagram of the current paths of the first and second DC power supplies respectively storing energy to the first and second energy storage inductors when two DC power supplies are connected according to the first embodiment of the present invention;

3B is a schematic diagram of the current paths when the first and second energy storage inductors respectively discharge the first and second energy storage capacitors when two DC power sources are connected according to the first embodiment of the present invention;

Fig. 4 is a schematic circuit diagram of a split-phase uninterruptible power supply system (Split-phase UPS) in which the first embodiment of the present invention is applied to a pair of batteries;

5A is a schematic diagram of the current path when a single DC power supply is connected to the first embodiment of the present invention, and the DC power supply stores energy to the first and second energy storage inductors at the same time;

5B is a schematic diagram of the current path when the first and second energy storage inductors discharge the first energy storage capacitor at the same time when a single DC power supply is connected according to the first embodiment of the present invention;

5C is a schematic diagram of the current path when the first and second energy storage inductors discharge the second energy storage capacitor at the same time when a single DC power supply is connected according to the first embodiment of the present invention;

6 is a schematic diagram of the circuit structure of a phase-splitting uninterruptible power supply system applied to a single battery according to the first embodiment of the present invention;

Fig. 7 is the circuit diagram of the second embodiment of the present invention;

8 is a schematic diagram of the circuit structure of a three-phase power input uninterruptible power supply system applied to a pair of batteries according to the second embodiment of the present invention;

9 is a schematic diagram of the circuit structure of a three-phase power input uninterruptible power supply system applied to a single battery according to the second embodiment of the present invention;

Fig. 10 is a functional block diagram of an online uninterruptible power supply system in the prior art;

FIG. 11 is a topology structure of a power converter with two-phase input in the prior art.

[Description of main component symbols]

10 The first AC switch circuit

11 first switch

20 second AC switch circuit

21 second switch

30 first rectification circuit

40 second rectification circuit

50 third AC switch circuit

51 third switch

60 third rectification circuit

70 control unit

101 electricity

102 AC to DC and power factor power factor correction device

103 control switch

104 DC to DC device

105 battery

106 DC to AC device

107 output filter device

108 bypass output path

109 AC output power supply

110 AC and DC input conversion device

Detailed ways

Regarding the multi-power input converter device of the present invention, please refer to Fig. 1, a first embodiment of the present invention includes a first input terminal T1, a second input terminal T2, a first energy storage inductor La, a A second energy storage inductor Lb, a reference ground potential terminal G, a first AC switch circuit 10, a second AC switch circuit 20, a first rectifier circuit 30, a second rectifier circuit 40, and a first energy storage capacitor C1 , a second energy storage capacitor C2 and a control unit 70 .

The above-mentioned reference ground potential terminal G is connected to a reference ground potential point for power supply.

The first and second energy storage inductors La and Lb are respectively connected to the first and second input terminals T1 and T2 for storing and releasing electric energy.

One end of the first AC switch circuit 10 is electrically connected to the other end of the first energy storage inductor La and oppositely connected to the first input terminal T1, and the other end of the first AC switch circuit 10 is electrically connected to the reference ground potential terminal G; In this embodiment, the first AC switch circuit 10 includes:

A diode bridge circuit consisting of first, second, third and fourth diodes D1, D2, D3, D4, wherein the negative pole of the first diode D1 and the second diode D2 The positive poles of the third diode D3 are connected to the first energy storage inductor La, and the positive pole of the third diode D3 is connected to the positive pole of the first diode D1, and the negative pole and the positive pole of the fourth diode D4 are connected to the first diode D4 respectively. The negative poles of the second and third diodes D2 and D3;

A first switch 11, connected between the connection node of the first and third diodes D1, D3 and the connection node of the second and fourth diodes D2, D4, in this embodiment, the first A switch 11 is a semiconductor switch.

One end of the second AC switch circuit 20 is electrically connected to the other end of the second energy storage inductor Lb opposite to the second input terminal T2, and the other end of the second AC switch circuit 20 is electrically connected to the reference ground potential terminal G; In this embodiment, the second AC switch circuit 20 includes:

A diode bridge circuit consisting of fifth, sixth, seventh and eighth diodes D5, D6, D7, D8, wherein the negative pole of the fifth diode D5 and the sixth diode D6 The positive pole of the second energy storage inductor Lb is commonly connected, and the positive pole of the seventh diode D7 is connected to the positive pole of the fifth diode D5, and the negative pole and positive pole of the eighth diode D8 are respectively connected to the first The negative poles of the sixth and seventh diodes D6 and D7;

A second switch 21, connected between the connection node of the fifth and seventh diodes D5, D7 and the connection node of the sixth and eighth diodes D6, D8, in this embodiment, the first A switch 21 is a semiconductor switch.

The above-mentioned first rectifier circuit 30 is electrically connected to the connection node of the first AC switch circuit 10 and the first energy storage inductor La; in this embodiment, the first rectifier circuit 30 is composed of a ninth diode D9 and a tenth pole The diodes D10 are connected in series. In this embodiment, the positive pole of the ninth diode D9 is connected to the negative pole of the twelfth pole D10, and the connection node of the ninth diode D9 and the twelfth pole D10 is The connection node of the first energy storage inductor La and the first AC switch circuit 10 is connected.

The above-mentioned second rectifier circuit 40 is electrically connected to the connection node of the second AC switch circuit 20 and the second energy storage inductance Lb; in this embodiment, the second rectifier circuit 40 is composed of an eleventh diode D11 and a first Twelve diodes D12 are connected in series. In this embodiment, the anode of the eleventh diode D11 is connected to the negative pole of the twelfth diode D12, and the eleventh diode D11 and the twelfth The connection node of the pole body D12 is connected to the connection node of the second energy storage inductance Lb and the second AC switch circuit 20, the negative pole of the eleventh diode D11 is also connected to the negative pole of the ninth diode D9, and the first The anode of the twelfth diode D12 is connected to the anode of the twelfth diode D10 .

The anode of the first energy storage capacitor C1 is connected to the first AC switch circuit 10 through the first and second rectifier circuits 30 and 40; in this embodiment, the anode of the first energy storage capacitor C1 is connected through the ninth and The eleventh diode D9 , D11 is respectively connected to the first and second diode D1 , D2 and the fifth and sixth diode D5 , D6 , and the negative pole is connected to the reference ground potential terminal G.

The positive pole of the second energy storage capacitor C2 is connected to the second AC switch circuit 20 through the first and second rectifier circuits 30, 40; in this embodiment, the positive pole of the second energy storage capacitor C2 is connected to the first storage capacitor The negative pole of the capacitor C1 is connected to the reference ground potential terminal G, and the negative pole is respectively connected to the first and second diodes D1, D2 and the fifth and sixth diodes through the tenth and twelfth diodes D10 and D12. Diodes D5, D6.

The above-mentioned control unit 70 is connected to the first and second switches 11, 12 of the first and second AC switch circuits 10, 20, by controlling the conduction of the first and second switches 11, 12 of the two AC switch circuits 10, 20 On and off, so that the two energy storage inductors La, Lb store the electric energy from the two input terminals T1, T2 and release electric energy to the first and second energy storage capacitors C1, C2 respectively; in this embodiment, the The control unit 70 has an AC to DC program, a power factor correction function, and a DC to DC program.

When the present invention is used together with AC two-phase power input, the first input terminal T1 and the second input terminal T2 are respectively connected to the line terminals L1 and L2 of the first-phase AC power supply AC1 and the second-phase AC power supply AC2, and the reference The ground potential terminal G is connected to the neutral terminal N of the AC power supply, and the working process of the AC to DC conversion is as follows:

1. Please further cooperate with that shown in FIG. 2A, during the positive half-cycle voltage period of the first or second phase AC power source AC1, AC2, the control unit 70 controls the switch 11, 21 is turned on, if during the positive half-cycle voltage period of the first-phase AC power supply AC1, the current of the first-phase AC power supply AC1 will flow through the first energy storage inductor La and the second and second phases of the first AC switch circuit 10 After the three diodes D2 and D3, it flows through the reference ground potential terminal G to the neutral line terminal N, so that the first energy storage inductance La stores energy; and if the second-phase AC power supply AC2 is in the positive half cycle During the voltage period, the current of the second-phase AC power source AC2 will flow through the second energy storage inductor Lb and the sixth and seventh diodes D6 and D7 of the second AC switch circuit 20, and then flow through the reference ground The potential end G is connected to the neutral line end N, so that the second energy storage inductor Lb stores energy.

2. When the first energy storage capacitor C1 is to be discharged, the control unit 70 controls the switches 11 and 21 of the first or second AC switching circuits 10 and 20 to be closed, and the first or second energy storage inductance La , Lb releases the electric energy obtained from the positive half cycle voltage of the first or second phase AC power source AC1, AC2 to the first energy storage capacitor C1, and its current path is shown in FIG. 2B.

3. Please refer to FIG. 2C , during the negative half cycle voltage period of the first and second phase AC power sources AC1, AC2, the control unit 70 controls the switches 11, 21 of the first or second AC switching circuits 10, 20 conduction, if during the negative half-cycle voltage period of the first-phase AC power supply AC1, the current of the first-phase AC power supply AC1 will flow from the reference ground potential terminal G through the third and second terminals of the first AC switch circuit 10 After the diodes D3 and D2, it flows through the first energy storage inductance La to the line terminal L1 of the first-phase AC power source AC1, so that the first energy storage inductance La stores energy; and if the second-phase AC During the negative half-cycle voltage period of the power supply AC2, the current of the second-phase AC power supply AC2 will flow through the eighth and fifth diodes D8 and D5 of the second AC switch circuit 20, and then flow through the second energy storage The inductor Lb and the line terminal L2 of the second-phase AC power source AC2 store energy in the second energy storage inductor Lb.

4. When the second energy storage capacitor C2 is to be discharged, the control unit 70 controls the switches 11, 21 of the first or second AC switching circuit 10, 20 to be closed, and the first or second energy storage inductance La , Lb releases the electric energy obtained from the negative half cycle voltage of the first or second phase AC power supply AC1, AC2 to the second energy storage capacitor C2, and its current path is shown in FIG. 2D.

In addition, the power factor correction function is to control the corresponding AC switch circuits 10 and 20 to be turned on and off according to the voltage phases of the AC power sources AC1 and AC2, so that the corresponding energy storage inductors La and Lb store energy and the two energy stores Capacitors C1 and C2 are discharged to minimize the distortion of the current input by each AC power source AC1 and AC2 , and make the current input by each AC power source AC1 and AC2 have the same phase as the input voltage.

When a first and a second DC power supply DC1 and DC2 are used instead to provide power, the first input terminal T1 and the second input terminal T2 are respectively connected to the positive terminal of the first DC power supply DC1 and the second DC power supply DC2 negative terminal, and the reference ground potential terminal G is connected to the negative terminal of the first DC power supply DC1 and the positive terminal of the second DC power supply DC2, and the working process of the DC-to-DC program is as follows:

1. Please refer further to FIG. 3A , when the first energy storage inductor La is to be stored, the control unit 70 controls the first switch 11 of the first AC switching circuit 10 to turn on, so that the first DC The current output by the power supply DC1 flows through the first energy storage inductor La and the second and third diodes D2 and D3 of the first AC switch circuit 10, and then flows back to the first DC through the reference ground potential terminal G. The negative terminal of the power supply DC1; and when it is desired to store energy to the second energy storage inductor Lb, the control unit 70 controls the second switch 21 of the second AC switch circuit 20 to turn on, so that the output of the second DC power supply DC2 The current flows through the reference ground potential terminal G and the eighth and fifth diodes D8 and D5 of the second AC switch circuit 20, and then flows back to the negative terminal of the second DC power supply DC2 through the second energy storage inductance Lb , it can be seen that the two energy storage inductors La and Lb are independent energy storage.

2. Please refer further to FIG. 3B , when the first or second energy storage capacitors C1 and C2 are to be discharged, the control unit 70 controls the switches 11 and 21 of the first or second AC switching circuits 10 and 20 Closed, the first or second energy storage inductance La, Lb respectively discharges the first or second energy storage capacitor C1, C2 to achieve the function of DC to DC conversion, so it can be seen that the two energy storage inductance La, Lb are independent Discharge the first or second energy storage capacitors C1 and C2.

As can be seen from the above, when the present invention is applied to a two-phase three-wire split-phase power supply system (Split-phase system) that uses two phases of the three-phase power, the used double-battery split-phase AC power input uninterruptible power supply When supplying the system (Split-phase UPS) (as shown in Figure 4), this UPS has two switches S1, S2, two batteries B1, B2, a DC-to-AC device and an output filter device, and the multi-phase UPS of the present invention The first input terminal T1 and the second input terminal T2 of the power input converter device are respectively connected to the line terminals L1 and L2 of the first-phase AC power supply AC1 and the second-phase AC power supply AC2, and the first and second input terminals T1, T2 is respectively connected to a battery B1, B2 through a switch S1, S2, and the other end of the two batteries B1, B2 is connected to the reference ground potential terminal G. In addition, each phase AC power supply AC1, AC2 is a common neutral line Independent power supply, so the conduction and closure of each AC switch circuit 10, 20 is based on the independent judgment and control of each corresponding phase power supply AC1, AC2, and the AC to DC program, power factor correction function and DC to DC program of the present invention That is to say, the present invention is used with AC two-phase power input and two DC power sources as described above, when the control unit 70 knows that the first and second AC power sources AC1 and AC2 are normal, since the UPS will control the control switches S1, S2 is open circuit, so the requirements for input alternating current to direct current (AC/DC) and power factor correction (PFC) can be achieved through the multi-power input converter device of the present invention; and when the input of AC power supply AC1 and AC2 is abnormal or interrupted, UPS It will control the control switches S1 and S2 to close the circuit so that the batteries B1 and B2 provide DC power instead. Therefore, the multi-power input converter device of the present invention can achieve the function of converting DC to DC when the UPS works in the backup power mode. Require.

In addition, the present invention can also work in the way that a single DC power supply DC3 provides power input, the first and second input terminals T1 and T2 are respectively connected to the positive terminal and negative terminal of a third DC power supply DC3, and the reference ground potential terminal G is ground, and the DC-to-DC program works as follows:

1. Please refer to FIG. 5A , when the first and second energy storage inductors La and Lb are to be stored, the control unit 70 controls the first and second switches of the first and second AC switching circuits 1020 11 and 21 are turned on at the same time, so the current of the DC power supply will flow through the first energy storage inductance La, the second and third diodes D2 and D3 of the first AC switch circuit 10, and the second AC switch circuit 20. The eighth and fifth diodes D8 and D5 and the second energy storage inductor Lb store energy in the first and second energy storage inductors La and Lb.

2. Please refer to FIG. 5B and FIG. 5C further. When the first energy storage capacitor C1 is to be discharged, the control unit 70 controls the first switch 11 of the first AC switch circuit 10 to be turned off, and the second switch 11 is turned off. The second switch 21 of the AC switch circuit 20 is turned on; when the second energy storage capacitor C2 is to be discharged, the control unit 70 controls the first switch 11 of the first AC switch circuit 10 to turn on, and the first switch 11 of the first AC switch circuit 10 is turned on. The second switch 21 of the two AC switch circuits 20 is turned off; thereby realizing the function of converting DC to DC.

From the above, it can be known that when the present invention is applied to a single-battery split-phase (Split-phase) AC power input UPS (as shown in FIG. 6 ), this UPS has a switch S1, a battery B1, and a DC-to-AC converter. device and an output filtering device, and the first input terminal T1 and the second input terminal T2 of the multi-power input converter device of the present invention are respectively connected to the line terminals L1 and L2 of the first-phase AC power supply AC1 and the second-phase AC power supply AC2 , and the switch S1 and the battery B1 are connected between the first and second input terminals T1, so the DC-to-DC program of the present invention is the same as the above-mentioned use of the present invention with AC two-phase power input and a single DC power supply, and through The multi-power input converter device of the present invention meets the requirements for converting input AC to DC, power factor correction, and converting DC to DC in standby power mode.

Since the above-mentioned first embodiment is applied to two independent AC or DC power supplies as an example for illustration, if the present invention is to be applied together with a three-phase AC power supply, please refer to FIG. 7, the second embodiment of the present invention Compared with the first embodiment, a third input terminal T3, a third energy storage inductor Lc, a third AC switching circuit 50 and a third rectifying circuit 60 must be further added, wherein:

One end of the third energy storage inductor Lc is connected to the third input terminal T3;

One end of the third AC switch circuit 50 is connected to the other end of the third energy storage inductor Lc opposite to the third input terminal T3, and the other end of the third AC switch circuit 50 is connected to the reference ground potential terminal G;

The third rectifier circuit 60 is electrically connected to the connection node between the third AC switch circuit 50 and the third energy storage inductor Lc, the first and second rectifier circuits 10, 20, and the first and second energy storage capacitors C1, C2: In this embodiment, the third rectifier circuit 60 is connected in series by a seventeenth diode D17 and an eighteenth diode D18.

Because the action principle of the second embodiment is the same as that of the first embodiment, so no more details are given here; For the UPS with AC power input (as shown in Figure 8 and Figure 9), when the UPS works in the online mode, the third AC switch circuit 50 is also turned on or off, and the third energy storage inductance Lc is used as the storage inductor Lc respectively. When the UPS works in the backup power mode, the third AC switch circuit 50 is in the off state.

From the above, it can be seen that the present invention mainly uses the limitation of the diodes in the AC switch circuits on the current path, and cooperates with the on and off of each switch to achieve the power factor correction circuit, the AC to DC circuit and the DC circuit in the traditional UPS. The function of the direct current conversion circuit does not require complex electronic components and circuit design, so the overall manufacturing cost of the present invention can be lower.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (16)

1. the device of power supply input translator more than a kind is characterized in that, comprising:

Two inputs, each input is connected with an independent current source;

Two energy storage inductors connect this two input respectively, for storing and the release electric energy;

One ground reference end connects this two independent current source;

Two alternating current switching circuits, respectively to should two energy storage inductors, an end of each alternating current switching circuit be electrically connected the other end that this correspondence energy storage inductor connects its corresponding input relatively, and the other end of each alternating current switching circuit then is electrically connected this ground reference end;

Two rectification circuits are electrically connected the connected node of this two alternating current switching circuit and corresponding energy storage inductor respectively;

Two energy storage devices, all has an anodal and negative pole, wherein an energy storage device connects the positive pole of another energy storage device with its negative pole and is a connected node, and this connected node connects this ground reference end, and not interconnected positive pole is connected this two alternating current switching circuit by this two rectification circuit respectively with negative pole on this two energy storage device;

One control unit connects this two alternating current switching circuit, the conducting by controlling this two alternating current switching circuit with close discharge electric energy so that this two energy storage inductor stores from the electric energy of this two input and to the energy storage device of correspondence.

2. many power supplys input translator device according to claim 1 is characterized in that when this two input further was connected with two batteries, this control unit then further had the direct current program that always circulates, and described DC-DC program comprises:

When desiring to make each energy storage inductor energy storage, the alternating current switching circuit conducting that control is corresponding;

When desiring to make each energy storage inductor when the energy storage device of correspondence discharges electric energy, the corresponding alternating current switching circuit of control is closed.

3. many power supplys input translator device according to claim 1 is characterized in that when further being connected with a battery between this two input, this control unit then further has the direct current program that always circulates, and described DC-DC program comprises:

When desire during, control the conducting simultaneously of this two alternating current switching circuit to this two energy storage inductors energy storage;

When desiring to make this two energy storage inductor when wherein a storage capacitor discharges electric energy, promptly control this therewith the alternating current switching circuit that connects of storage capacitor close, and control another alternating current switching circuit conducting.

4. as many power supplys input translator device as described in each in the claim 1 to 3, it is characterized in that, further comprise another input, another energy storage inductor, another alternating current switching circuit and another rectification circuit, wherein:

This another input connects another independent current source;

This ground reference end connects this another independent current source;

One end of this another energy storage inductor is electrically connected this another input;

This another alternating current switching circuit is to should another energy storage inductor, one end of this another alternating current switching circuit is electrically connected the other end that this another energy storage inductor connects this another input relatively, and the other end of this another alternating current switching circuit then is electrically connected this ground reference end;

This another rectification circuit is electrically connected connected node, this two rectification circuit and this two energy storage device of this another alternating current switching circuit and this another energy storage inductor.

5. as many power supplys input translator device as described in each in the claim 1 to 3, it is characterized in that, when each independent current source is an independent AC power, input connect corresponding independent AC power at line end, this ground reference end connects the neutral terminal of these all independent AC power, this control unit further has a power factor emendation function, its voltage-phase according to each independent AC power is controlled corresponding alternating current switching circuit conducting and is closed, so that corresponding energy storage inductor energy storage and release electric energy are given this two energy storage device, and then the current distortion minimum that each independent AC power is imported, and make the electric current of each independent AC power input and the voltage same-phase of input.

6. as many power supplys input translator device as described in the claim 4, it is characterized in that, when each independent current source is an independent AC power, input connect corresponding independent AC power at line end, this ground reference end connects the neutral terminal of these all independent AC power, this control unit further has a power factor emendation function, its voltage-phase according to each independent AC power is controlled corresponding alternating current switching circuit conducting and is closed, so that corresponding energy storage inductor energy storage and release electric energy are given this two energy storage device, and then the current distortion minimum that each independent AC power is imported, and make the electric current of each independent AC power input and the voltage same-phase of input.

7. as many power supplys input translator device as described in each in the claim 1 to 3, it is characterized in that, when each independent current source is an independent AC power, input connect corresponding independent AC power at line end, this ground reference end connects the neutral terminal of these all independent AC power, this control unit further has one and exchanges commentaries on classics direct current program, and described interchange is changeed the direct current program and comprised:

When desiring to make each energy storage inductor with the electric energy energy storage of the positive half cycle voltage of each independent AC power and negative half period voltage, the alternating current switching circuit conducting that control is corresponding;

When the electric energy of positive half cycle voltage of desiring to make each energy storage inductor will take from corresponding independent AC power and negative half period voltage discharged to this two storage capacitor respectively, the corresponding alternating current switching circuit of control was closed.

8. as many power supplys input translator device as described in the claim 4, it is characterized in that, when each independent current source is an independent AC power, input connect corresponding independent AC power at line end, this ground reference end connects the neutral terminal of these all independent AC power, this control unit further has one and exchanges commentaries on classics direct current program, and described interchange is changeed the direct current program and comprised:

When desiring to make each energy storage inductor with the electric energy energy storage of the positive half cycle voltage of each independent AC power and negative half period voltage, the alternating current switching circuit conducting that control is corresponding;

When the electric energy of positive half cycle voltage of desiring to make each energy storage inductor will take from corresponding independent AC power and negative half period voltage discharged to this two storage capacitor respectively, the corresponding alternating current switching circuit of control was closed.

9. the non-interrupted power supply system with many power supplys input translator device as claimed in claim 1 is characterized in that, comprising:

This two independent current source is two independent AC power, this two input connect respectively this two independent AC power at line end, this ground reference end connects the neutral terminal of this two independent AC power;

Two batteries, one end connect this two input respectively, and the other end then all connects this ground reference end;

Two switches connect respectively between this two battery and the corresponding input end;

The ac equipment that always circulates connects on this two energy storage device, connects the positive pole and the negative pole of this two alternating current switching circuit by this two rectification circuit; And

One output filter connects this direct current and delivers the stream device.

10. as the non-interrupted power supply system of many power supplys input translator device as described in the claim 9, it is characterized in that this control unit further has the direct current program that always circulates, described DC-DC program comprises:

When desiring to make each energy storage inductor energy storage, the alternating current switching circuit conducting that control is corresponding;

When desiring to make each energy storage inductor when the energy storage device of correspondence discharges electric energy, the corresponding alternating current switching circuit of control is closed.

11. non-interrupted power supply system as many power supplys input translator device as described in claim 9 or 10, it is characterized in that, this control unit further has a power factor emendation function, its voltage-phase according to each independent AC power is controlled corresponding alternating current switching circuit conducting and is closed, so that corresponding energy storage inductor energy storage and release electric energy are given this two energy storage device, and then be the current distortion minimum of each independent AC power input, and make the electric current of each independent AC power input and the voltage same-phase of input.

12. the non-interrupted power supply system as many power supplys input translator device as described in claim 9 or 10 is characterized in that, this control unit further has one and exchanges and change the direct current program, and described interchange is changeed the direct current program and comprised:

When desiring to make each energy storage inductor with the electric energy energy storage of the positive half cycle voltage of each independent AC power and negative half period voltage, the alternating current switching circuit conducting that control is corresponding;

When the electric energy of positive half cycle voltage of desiring to make each energy storage inductor will take from corresponding independent AC power and negative half period voltage discharged to this two storage capacitor respectively, the corresponding alternating current switching circuit of control was closed.

13. the non-interrupted power supply system with many power supplys input translator device as claimed in claim 1 is characterized in that, comprising:

This two independent current source is two independent AC power, this two input connect respectively this two independent AC power at line end, this ground reference end connects the neutral terminal of this two independent AC power;

One battery, its positive pole is connected two inputs respectively with negative pole;

One switch is connected in this battery and wherein between the input;

The ac equipment that always circulates connects on this two energy storage device, connects the positive pole and the negative pole of this two alternating current switching circuit by this two rectification circuit; And

One output filter connects this direct current and delivers the stream device.

14. the non-interrupted power supply system as many power supplys input translator device as described in the claim 13 is characterized in that this control unit further has the direct current program that circulates always, described DC-DC program comprises:

When desiring to make this two energy storage inductors energy storage, control the conducting simultaneously of this two alternating current switching circuit;

When desiring to make this two energy storage inductor when wherein a storage capacitor discharges electric energy, promptly control this therewith the alternating current switching circuit that connects of storage capacitor close, and control another alternating current switching circuit conducting.

15. non-interrupted power supply system as many power supplys input translator device as described in claim 13 or 14, it is characterized in that, this control unit further has a power factor emendation function, its voltage-phase according to each independent AC power is controlled corresponding alternating current switching circuit conducting and is closed, so that corresponding energy storage inductor energy storage and release electric energy are given this two energy storage device, and then the current distortion minimum that each independent AC power is imported, and make the electric current of each independent AC power input and the voltage same-phase of input.

16. the non-interrupted power supply system as many power supplys input translator device as described in claim 13 or 14 is characterized in that, this control unit further has one and exchanges and change the direct current program, and described interchange is changeed the direct current program and comprised:

When desiring to make each energy storage inductor with the electric energy energy storage of the positive half cycle voltage of each independent AC power and negative half period voltage, the alternating current switching circuit conducting that control is corresponding;

When the electric energy of positive half cycle voltage of desiring to make each energy storage inductor will take from corresponding independent AC power and negative half period voltage discharged to this two storage capacitor respectively, the corresponding alternating current switching circuit of control was closed.

Images