CN103904984A - Interference electricity preventing electromotor intelligent managing device and method - Google Patents
Interference electricity preventing electromotor intelligent managing device and method Download PDFInfo
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Abstract
The invention provides an interference electricity preventing electromotor intelligent managing device. The interference electricity preventing electromotor intelligent managing device comprises a processor CPU and a start-stop loop, wherein the processor CPU is arranged inside the intelligent managing device, and the start-stop loop is arranged outside the intelligent managing device. The start-stop loop comprises a terminal DO1, a terminal DO2 and a terminal COM1 and further comprises a direct current power source converting unit AD in the intelligent managing device, an energy storing unit DE, an energy storing unit DE, a current output control unit DC and a loop converting switch CW. The invention further provides an interference electricity preventing electromotor intelligent managing method. The method comprises the first step of detecting the voltage, the second step of determining the electric equipment work mode, the third step of judging the fault and the fourth step of carrying out control. The device can automatically adjust the work state of electric equipment according to the voltage changing situation when a power source is abnormal, the non-stop running of an alternating current contactor KM is kept to the maximum, the normal operation of the production technology process can be guaranteed, the alternating current contactor stopping running can automatically start to work when the voltage is recovered, the fault types can be distinguished, and the fault can be removed in time.
Description
Technical field
The present invention relates to a kind of voltage shock avoiding motor intelligent manager and method.
Background technology
A large amount of motor that use in Industry Control loop, the startup of motor and stop generally being controlled by motor intelligent manager (also claiming motor controller), in the time of abnormity of power supply, can cause A.C. contactor to thread off, and affects the normal operation of control loop.
Current voltage shock avoiding method, motor intelligent manager or voltage shock avoiding accessory power supply module all can not meet the voltage shock avoiding requirement of technological process because of the limitation of its control method.The voltage shock avoiding function of motor intelligent manager is just in the time of abnormity of power supply, control loop is kept connecting, although control loop is connected, but A.C. contactor is because of abnormity of power supply, still can discharge, cause the power consumption equipments such as motor out of service, this voltage shock avoiding function is just in the time that voltage recovers normal, can make A.C. contactor rerun, can not keep A.C. contactor normally to work at abnormity of power supply, this control mode has also only been considered the working condition of individual A.C. contactor, do not consider the impact of A.C. contactor on whole electric power system, also how not ensure to greatest extent the normal operation of production process from the viewpoint of production technology.
Voltage shock avoiding accessory power supply module has only been considered voltage, and do not distinguish shake electricity produce reason, as caused power-supply fluctuation because of electricity consumption side (motor) fault, at this moment voltage shock avoiding accessory power supply module still makes A.C. contactor maintenance work, fault can not be excised in time, cause fault to continue to occur, make loss expand and have influence on the normal work of whole electric power system.
Summary of the invention
The voltage shock avoiding function retentive control loop the object of the invention is in order to overcome existing motor intelligent manager is connected, can not keep A.C. contactor normally to move, can not be according to the self-adjusting shortcoming of voltage fluctuation degree, and voltage shock avoiding accessory power supply module can not be distinguished the shortcoming of fault type, provide a kind of voltage shock avoiding motor intelligent manager, the impact of the solution abnormity of power supply of system on production technology.
For this reason, the invention provides a kind of voltage shock avoiding motor intelligent manager, comprise the processor CPU that is arranged at intelligent supervisor inside and the start and stop loop of being located at intelligent supervisor outside, this start and stop loop comprises opens SF, stops SS control switch and terminals DO1, DO2 and COM1, also comprises DC power supply converting unit AD, the energy-storage units DE, electric current output control unit DC, the loop change over switch CW that are arranged in intelligent supervisor;
Loop change over switch CW is single-pole double-throw switch (SPDT), comprises two ports of CW-1 and CW-2, and CW-1 and CW-2 form two electricity consumption loops with output, the terminals DO2 of terminals COM1, DO2 and electric current output control unit DC respectively; The input of DC power supply converting unit AD is electrically connected with AC power L end, and this DC power supply converting unit AD output is electrically connected with input, the energy-storage units DE charging end of electric current output control unit DC simultaneously.
Meanwhile, the present invention also provides a kind of voltage shock avoiding motor intelligent management method, comprises the following steps: 1) voltage detecting: processor CPU measures voltage;
2) power consumption equipment working method: when power consumption equipment operation, there are two kinds of working methods, A alternate current operation mode, circuit switching CW1 connects, and CW2 disconnects, and provides alternating current to power consumption equipment; B DC operation mode, circuit switching CW1 disconnects, and CW2 connects, and provides direct current to power consumption equipment;
3) fault judgement: processor CPU judges power failure reason according to voltage and current sample value, if mains side fault causes voltage fluctuation, control by step 4), the fault of electricity consumption side in this way causes voltage fluctuation, control according to step 5) or directly disconnect power consumption equipment current supply circuit, make power consumption equipment out of service, or step 5) and disconnection power consumption equipment current supply circuit are carried out simultaneously;
4) while needing power consumption equipment A.C. contactor KM to continue operation in the time of power-supply fluctuation, the CW-2 end conducting of CPU control loop change over switch CW, CW-1 holds not conducting, supplies with electric current output control unit DC by energy-storage units DE, and by electric current output control unit, DC provides direct current to power consumption equipment KM; If working method is DC operation mode, this step can be skipped;
5) when electricity consumption side fault causes voltage source fluctuation, or voltage fluctuation exceedes voltage or time range, or outside signal out of service detected, CPU control loop change over switch CW-1 conducting, CW-2 disconnects, and also can disconnect the switch between CW and DO2 simultaneously, makes A.C. contactor KM out of service.
Described step 2) power consumption equipment operational mode, in the time that voltage is normal, control according to following process: in the time that power consumption equipment is normally worked, A.C. contactor KM adhesive, the CW-1 end conducting of loop change over switch CW, CW-2 holds not conducting, and low-voltage AC is by the CW-1 end of start and stop loop (1), terminals COM1, loop change over switch CW, the DO2 of voltage shock avoiding motor intelligent manager, and to power consumption equipment, KM provides alternating current; CPU also can control loop change over switch CW CW-1 end disconnect, CW-2 holds conducting, by DC power supply converting unit, AD converts alternating current to direct current, supplies with electric current output control unit DC, and by electric current output control unit, DC provides direct current to power consumption equipment KM; While low-voltage AC converts alternating current to direct current through DC power supply converting unit AD and charges to energy-storage units DE.
In described step 5) in the time that A.C. contactor KM causes that because of mains side fault voltage fluctuation is out of service, if it is normal that voltage recovers within the time of setting, voltage shock avoiding motor intelligent manager, by the switch between the closed DO1 of the delay time of setting and COM1, makes A.C. contactor KM operation.
Advantage of the present invention is: can be according to change in voltage situation in the time of abnormity of power supply, automatically adjust power consumption equipment operating state, keep to greatest extent A.C. contactor KM not out of service with guarantee the technological process of production normal operation and to the impact of system in allowed band, can make again A.C. contactor out of service automatically rework in the time that voltage recovers, can also distinguish fault type, excise in time fault.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is voltage shock avoiding motor intelligent manager schematic diagram of the present invention;
Fig. 2 is current conversion unit AD circuit diagram;
Fig. 3 is that processor CPU controls schematic diagram.
Description of reference numerals: 1, start and stop loop; L, N: AC power; SS: stop button; SF: start button; AD: DC power supply converting unit; DE: energy-storage units; DC: electric current output control unit; CW: loop change over switch; CW-1, CW-2: the two ends of loop change over switch CW; KM: A.C. contactor; DO1, DO2, COM1: terminals; R64, R65, R66, R67, R68, R78: resistance; D12, D13, D21, D33, D34, D35: diode; E5, E6, E7, E9: electrochemical capacitor; L2: inductance; VCC: out-put supply; VDD: out-put supply; V1: integration module; Vin:V1 input; Vout:V1 output; GND: earth terminal; U4: integrated circuit; C3: electric capacity.
Embodiment
Can not be according to the self-adjusting shortcoming of voltage fluctuation degree in order to solve existing voltage shock avoiding motor intelligent manager, the present embodiment provides a kind of voltage shock avoiding motor intelligent manager as shown in Figure 1, comprise the processor CPU that is arranged at intelligent supervisor inside and the start and stop loop 1 of being located at intelligent supervisor outside, this start and stop loop 1 comprises opens SF, stops SS control switch and terminals DO1, DO2 and COM1, also comprises DC power supply converting unit AD, the energy-storage units DE, electric current output control unit DC, the loop change over switch CW that are arranged in intelligent supervisor;
Loop change over switch CW is single-pole double-throw switch (SPDT), comprises two ports of CW-1 and CW-2, and CW-1 and CW-2 form two electricity consumption loops with output, the terminals DO2 of terminals COM1, DO2 and electric current output control unit DC respectively; Loop change over switch CW and electric current output control unit DC output electrically connect, current conversion unit AD and processor CPU electrically connect, processor CPU outputs signal to loop change over switch according to voltage, current sampling data and time sampled value, the connecting and disconnecting of control loop change over switch CW-1 and CW-2;
The input of DC power supply converting unit AD is electrically connected with AC power L end, and this DC power supply converting unit AD output is electrically connected with input, the energy-storage units DE charging end of electric current output control unit DC simultaneously.
As shown in Figure 2, AC power L end is serially connected in the pin one of U4 successively with D21, R64, R66 by R78, the output of D21 is connected with pin 7, the pin 8 of U4 respectively by R65, the other end of AC power is connected with pin 5, the pin 6 of U4 respectively by D33, E7 is connected between the output of D21 and the input of D33, the output of D33 is connected in series with the Vin end of V1 with R67, L2 successively, and the pin two of U4 is connected with the output of L2 by D34, D35, wherein D35 reversal connection; Vin is connected with VDD, and E6 and R68 are attempted by between VDD and earth terminal, and the input of D33 is connected with earth terminal, the Vout end of V1 is connected in series with D13, VCC successively, the GND end of V1 is serially connected in earth terminal with D12, and C3 is connected between the input and earth terminal of D13, and E9 is serially connected between VCC and earth terminal.
E7 capacitance in energy-storage units DE available current converting unit AD strengthens and replaces, also 560 μ/400V electrochemical capacitor that can be used alone is attempted by E7 two ends, or 4700 μ/25V electrochemical capacitor is attempted by the two ends of E6, VCC out-put supply is 5V, and VDD output is 12 ~ 15V.
In the present embodiment, U4 is the intelligent switch controller integrated circuit of a high-performance electric die pressing type, model is CP8030, the model of V1 is 78L05, it is a kind of three-terminal voltage-stabilizing feed regulator isolator, electric current output control unit DC is 3W adjustable resistance or fixed value resistance (5 ~ 100 Europe), loop change over switch CW uses the relay with one group of changeover contact, as the HF33-Z type relay of grand.
When power supply is normal, start button SF closure, AC power enters into A.C. contactor KM by SS, SF, COM1, CW-1, DO2, KM adhesive, and power consumption equipment is started working, at this moment change over switch CW-1 in loop connects, CW-2 disconnects, and offers A.C. contactor KM alternating current, simultaneously, low-voltage alternating-current through DC power supply converting unit AD by L be electrically connected, convert alternating current to direct current to energy-storage units DE and electric current output control unit DC power supply.When A.C. contactor KM normally works, also can be by the CW-2 loop conducting of voltage shock avoiding motor intelligent manager control loop change over switch CW, CW-1 loop disconnects, low-voltage alternating-current converts alternating current to direct current by DC power supply converting unit AD, supply with electric current output control unit DC, supply direct current by electric current output control unit DC to power consumption equipment KM.
As shown in Figure 3, by processor CPU, voltage, electric current and time are set, and voltage, electric current are detected in real time, processor CPU outputs signal to loop change over switch, the connecting and disconnecting (following voltage definite value V1, V2, V3 and time definite value T1, T2, T3 are set point) of control loop change over switch CW-1 and CW-2 according to real-time testing result:
A, voltage L are greater than the first voltage set point V1, power supply is normal working voltage, when power consumption equipment KM normally works, be connected between start and stop circuit connection end COM1 and DO2 by loop change over switch CW mono-road CW-1, make low-voltage ac voltage be carried in the two ends of A.C. contactor KM, A.C. contactor KM adhesive, keeps operating state constant;
B, voltage are less than the first voltage set point V1 and are greater than second voltage set point V2, electric voltage exception.If electric voltage exception is to be caused by mains side fault, control loop change over switch CW-2 connects (CW-1 disconnection), CW-2 mono-end is connected between electric current output control unit DC and start and stop circuit connection end DO2, make energy-storage units DE by electric current output control unit DC to providing direct current with A.C. contactor KM;
C, voltage are less than second voltage set point V2, although or voltage is not less than V2 but the time exceedes setting-up time T1, or receive signal out of service, the CW-1 of loop change over switch CW connects, CW-2 disconnects, also the switch between cutoff circuit change over switch CW and DO2 simultaneously, makes A.C. contactor out of service;
To exceed T1 out of service because voltage is less than V2 or time for D, A.C. contactor, and while recovering normal as voltage in setting-up time T2 (being greater than V3), after delay adjustments time T 3, the switch between closed DO1 and COM1, starts A.C. contactor and rerun.
When power supply survey that fault causes voltage fluctuation and the voltage and time range that can bear in electric power system in, continue power supply by energy-storage units DE; If fault is caused by electricity consumption side (motor), or voltage fluctuation exceeds system and can bear voltage and time range, or while receiving signal out of service, disconnect direct current power supply loop CW-2(by loop change over switch CW and connect CW-1), also can disconnect the switch between CW and DO2 simultaneously, make A.C. contactor out of service; If A.C. contactor because of mains side false voltage fluctuation out of service after, within the time of setting, voltage recovers again normal, voltage shock avoiding motor intelligent manager, according to controlling the switch closure between DO1 and COM1 after the delay time of setting, starts A.C. contactor work.
In sum, this voltage shock avoiding motor intelligent manager provided by the invention, can be according to change in voltage situation in the time of abnormity of power supply, automatically adjust power consumption equipment operating state, keep to greatest extent A.C. contactor KM not out of service with guarantee the technological process of production normal operation and to the impact of system in allowed band, can make again A.C. contactor out of service automatically rework in the time that voltage recovers, can also distinguish fault type, excise in time fault.
More than exemplifying is only to illustrate of the present invention, does not form the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention all belongs to protection scope of the present invention.
Claims (4)
1. a voltage shock avoiding motor intelligent manager, comprise the processor CPU that is arranged at intelligent supervisor inside and the start and stop loop (1) of being located at intelligent supervisor outside, this start and stop loop (1) comprises Wiring port DO1, DO2 and COM1, it is characterized in that: also comprise DC power supply converting unit AD, the energy-storage units DE, electric current output control unit DC, the loop change over switch CW that are arranged in intelligent supervisor;
Loop change over switch CW is single-pole double-throw switch (SPDT), comprises two ports of CW-1 and CW-2, and CW-1 and CW-2 form two electricity consumption loops with output, the terminals DO2 of terminals COM1, DO2 and electric current output control unit DC respectively; Loop change over switch CW and electric current output control unit DC output electrically connect, current conversion unit AD and processor CPU electrically connect, processor CPU outputs signal to loop change over switch CW according to voltage sample value and time sampled value, with the connecting and disconnecting of control loop change over switch CW-1 and CW-2;
The input of DC power supply converting unit AD is electrically connected with AC power L end, and this DC power supply converting unit AD output is electrically connected with input, the energy-storage units DE charging end of electric current output control unit DC simultaneously.
2. a voltage shock avoiding motor intelligent management method, is characterized in that: comprise the following steps:
1) voltage detecting: processor CPU measures voltage;
2) power consumption equipment working method: when power consumption equipment operation, have two kinds of working methods: A alternate current operation mode, circuit switching CW1 connects, and CW2 disconnects, and provides alternating current to power consumption equipment; B DC operation mode, circuit switching CW1 disconnects, and CW2 connects, and provides direct current to power consumption equipment;
3) fault judgement: processor CPU judges according to voltage and current sample value whether power failure occurs and reason, if mains side fault causes voltage fluctuation, needs power consumption equipment in the time of power-supply fluctuation, to continue operation, controls by step 4); The fault of electricity consumption side in this way causes voltage fluctuation, does not need power consumption equipment in the time of power-supply fluctuation, to continue operation, controls according to step 5) or directly disconnects current supply circuit, and use equipment is out of service, or step 5) and disconnection current supply circuit are carried out simultaneously; If the electric current of motor intelligent manager judges that speed is slow, even or in the time that step 4) is worked, also can disconnect the current supply circuit of power consumption equipment or have other reason, this step can only judge whether power supply breaks down, as long as fault occurs just by step 4) control, need not distinguish fault is mains side fault or electricity consumption side fault;
4) according to the judgement of step 3), need power consumption equipment in the time of power-supply fluctuation, to continue operation, while being alternate current operation mode as working method, the CW-2 end conducting of CPU control loop change over switch CW, CW-1 holds not conducting, supply with electric current output control unit DC by energy-storage units DE, by electric current output control unit, DC provides direct current to power consumption equipment KM; While being DC operation mode as working method, this can skip;
5) in the time meeting one of following condition, A electricity consumption side fault causes voltage fluctuation, B voltage fluctuation exceed setting voltage (or) and time range, C detects signal out of service, the conducting of CPU control loop change over switch CW-1 end, CW-2 hold not conducting, and the switch that CPU also can control between CW and DO2 simultaneously disconnects, and makes A.C. contactor KM out of service, above-mentioned condition can be selected according to actual conditions, selects wherein one or more.
3. a kind of voltage shock avoiding motor intelligent management method according to claim 2, it is characterized in that: described step 2) power consumption equipment working method: in the time that power consumption equipment is normally worked, A.C. contactor KM adhesive, there are two kinds of working methods: the CW-1 end conducting of A alternate current operation mode CPU control loop change over switch CW, CW-2 holds not conducting, low-voltage AC is by the CW-1 end of start and stop loop, terminals COM1, loop change over switch CW, the DO2 of voltage shock avoiding motor intelligent manager, and to power consumption equipment, KM provides alternating current; B DC operation mode, the CW-1 of CPU control loop change over switch CW holds not conducting, and CW-2 holds conducting, and by DC power supply converting unit, AD converts alternating current to direct current, supply with electric current output control unit DC, by electric current output control unit, DC provides direct current to power consumption equipment KM; While low-voltage AC converts alternating current to direct current through DC power supply converting unit AD and charges to energy-storage units DE; It is wherein a kind of that these two kinds of working methods can be fixed choosing, or allow user set according to field condition.
4. a kind of voltage shock avoiding motor intelligent management method according to claim 2, it is characterized in that: described step 4) is for alternate current operation mode, in the time that power-supply fluctuation needs A.C. contactor to continue operation, the CW-1 of CPU control loop switch disconnects, CW-2 conducting, continued to provide direct current to A.C. contactor KM by electric current output control unit DC by energy-storage units DE, maintain the operation of A.C. contactor KM.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108521169A (en) * | 2018-06-11 | 2018-09-11 | 泰豪科技股份有限公司 | An anti-sway electric circuit and system |
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