CN104793090A - Separate voltage drop simulator - Google Patents
Separate voltage drop simulator Download PDFInfo
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- CN104793090A CN104793090A CN201510237669.7A CN201510237669A CN104793090A CN 104793090 A CN104793090 A CN 104793090A CN 201510237669 A CN201510237669 A CN 201510237669A CN 104793090 A CN104793090 A CN 104793090A
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Abstract
The invention provides a separate voltage drop simulator comprising a modularly packaged main control computer and at least one modularly packaged voltage regulating device connected with the main control computer, wherein the voltage regulating device outputs a rated voltage and a dropout voltage to the main control computer, the main control computer controls the voltage regulating device to regulate the dropout voltage according to a preset dropout voltage value, and the main control computer is connected with a plurality of voltage regulating devices in a combined connection manner. Since the separate voltage drop simulator provided by the invention adopts the separate modular main control computer and the voltage regulating device, the separate voltage drop simulator provided by the invention can select voltage regulating devices with different specifications, different volumes and different number according to different product demands, thereby having extendibility; moreover, the overall weight and volume are reduced, and thus the separate voltage drop simulator is convenient to move, arrange in tests and meter.
Description
Technical field
What the present invention relates to is the technology of a kind of power electronic equipment technical field and electromagnetic compatibility (EMC) field tests, specifically a kind of separate type voltage sag simulator meeting IEC61000 ?4 ?11 and GB/T17626.11 standard-required.
Background technology
At present for doing the Voltage Drop simulator integrated design often of Voltage Drop test, controlling, loop feature and pressure-regulating portion divide and concentrate among a machine.Existing Voltage Drop simulator has that volume is large, Heavy Weight, and the shortcoming causing this Voltage Drop simulator to be not easy to mobile and test arranging, the power capacity of this kind of Voltage Drop simulator is set, makes the demand being difficult to meet different capabilities test specimen.
Through finding the retrieval of prior art; Chinese patent literature CN101478244; open (bulletin) day 2009.07.08; disclose a kind of voltage falling generator for wind power electricity generation, comprise host computer, data collecting card, IGBT drive and protection circuit, two IGBT two-way switchs, pressure regulator, voltage hall sensor, current Hall sensor and Wind turbines.Three-phase voltage, the current signal that voltage falling generator exports is obtained by voltage hall sensor, current Hall sensor; the three-phase voltage, the current signal be sent to host computer that utilize data collecting card to gather voltage falling generator to export; host computer is fallen and recovery command signal to IGBT drive and protection circuit output voltage by data collecting card; control two IGBT two-way switch conductings in turn; voltage falling generator output voltage is switched between the former limit and secondary of pressure regulator, thus simulates various symmetry and unbalanced network voltage falls fault.This technology has the features such as simple to operate, reliability is high, real-time is good, is applicable to the performance test of Wind turbines under line voltage failure condition and research.But the control of this voltage falling generator, loop feature and pressure regulation part and wind power generating set concentrate in a machine.Pressure regulator is large, the Heavy Weight of machine often, be not easy to mobile and experimental arrangement, and pressure regulator power capacity is set, cannot flexible expansion, makes it be difficult to meet the demand of different capabilities test specimen.
Open (bulletin) the day 2008.03.26 of Chinese patent literature CN101149412, disclose a kind of programmable controller digital-control type cycle voltage falling emulation generator, it is characterized in that, by industrial human-computer interface touch-screen, Programmable Logic Controller, stepper motor driver, stepper motor, from even pressure regulator, zero passage sample circuit, AC-to-DC voltage conversion circuit, IGBT voltage control circuit forms, industrial human-computer interface touch-screen is connected with Programmable Logic Controller, Programmable Logic Controller respectively with zero passage sample circuit, stepper motor driver, AC-to-DC voltage conversion circuit, IGBT voltage control circuit connects, AC-to-DC voltage conversion circuit is connected respectively with from even pressure regulator and IGBT voltage control circuit, stepper motor driver is connected with from even pressure regulator by stepper motor.The advantage of this technology is the new programmable controller (PLC) that have employed band A/D translation function, achieves the cycle voltage falling emulation amount control meeting relevant criterion and require.This technology strong interference immunity, reliability is high, and software upgrading is carried out in the revision being easy to follow correlation test standard.But this cycle voltage falling emulation generator its control, loop feature and pressure-regulating portion divide and concentrate in a machine.Pressure regulator is large, the Heavy Weight of machine often, be not easy to mobile and experimental arrangement, and pressure regulator power capacity is set, cannot flexible expansion, makes it be difficult to meet the demand of different capabilities test specimen.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of separate type voltage sag simulator is proposed, adopt separation-type and modularized main control computer and regulator, make the present invention according to the regulator of different product demand apolegamy different size, different capabilities and quantity, extensibility can be had; And alleviate overall weight and volume, conveniently mobile, test is arranged and metering.
The present invention is achieved by the following technical solutions:
The present invention includes: the main control computer of modularized encapsulation and at least one regulator of the modularized encapsulation be attached thereto, wherein: regulator is by rated voltage V
1with drop-off voltage V
2export main control computer to, main control computer, according to the drop-off voltage value preset, controls regulator adjustment drop-off voltage V
2.
When test specimen power supply is single phase alternating current power supply, then match a regulator, wherein: the capacity of regulator is 2A, 16A, 32A or 100A, be then configured to 1 2A pressure regulator, 1 16A pressure regulator, 1 32A pressure regulator, 1 100A pressure regulator.
When test specimen power supply is three-phase alternating-current supply, then match three above-mentioned regulators, wherein: the capacity of regulator is 2A, 16A, 32A or 100A, then 3 2A pressure regulators, 3 16A pressure regulators, 3 32A pressure regulators, 3 100A pressure regulators are configured to.Actual test normally can carry out Voltage Drop simulated experiment according to the own hand-operated pressure regulation appliance (not needing to configure the regulator that the present invention relates to) of self-demand apolegamy.
Accompanying drawing explanation
Fig. 1 is embodiment 1 separate unit regulator schematic diagram.
Fig. 2 is embodiment 1 multiple stage regulator schematic diagram.
Fig. 3 is structural representation of the present invention.
Fig. 4 is power supply circuit construction schematic diagram.
Fig. 5 is IGBT drive circuit schematic diagram.
Fig. 6 is voltage sample testing circuit schematic diagram.
Fig. 7 is embodiment schematic flow sheet;
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: the main control computer 1 of modularized encapsulation and the separate unit regulator 2 of the modularized encapsulation be attached thereto, wherein: regulator 2 is by rated voltage V
1with drop-off voltage V
2export main control computer 1 to, main control computer 1, according to the drop-off voltage value preset, controls regulator 2 and adjusts drop-off voltage V
2.
As shown in Figure 2, main control computer and multiple stage regulator combination connecting mode.
As shown in Figure 3, described main control computer 1 comprises: the IGBT switch switching circuit 11 connected successively, voltage sample testing circuit 12, control circuit 13 and Human-machine Control unit 14, wherein: IGBT switch switching circuit 11 be connected with test specimen W and receive voltage controller power source 22 adjust after voltage, IGBT switch switching circuit 11 receives input voltage V
inthrough IGBT switch process and output switch switch after voltage to voltage sample testing circuit 12, high alternating voltage process after voltage sample testing circuit 12 pairs of IGBT switching overs also exports low dc voltage to control circuit 13, control circuit 13 pairs of Voltage Drop waveforms and parameter are through telecommunication circuit process and output voltage falls analog waveform and parameter to Human-machine Control unit 14, and Human-machine Control unit 14 pairs of experimenter's experiment parameters set through touch-screen and export to control circuit.
Described regulator 2 comprises: voltage controller power source driver 21, voltage controller power source 22 and voltmeter head 23, wherein: voltage controller power source 22 receives input voltage V
incarbon brush slip on coil is driven to obtain changing voltage and export this changing voltage to voltmeter head 23 through oneself motor, and export this changing voltage to IGBT switch switching circuit 11, voltage controller power source driver 21 be connected with voltage controller power source 22 with control circuit 13 respectively and reception control circuit 13 pressure regulation instruction and drive voltage controller power source 22 motor to carry out pressure regulation.
Described IGBT switch switching circuit 11 comprises: the feed circuit be sequentially connected in series, IGBT drive circuit and IGBT module, wherein: feed circuit export 20V power supply to IGBT drive circuit, IGBT drive circuit to IGBT module export "+15V Continuity signal " He “ ?5V pick-off signal ".
As shown in Figure 4, described feed circuit comprise: two safety electric capacity C1, C2, common mode inductance L1, first transformer T1, first rectifier bridge module DB1, first electrochemical capacitor CD1, two filter capacitor C3, C4, power supply voltage stabilizing chip U1 and the first voltage stabilizing diode Z1, wherein: the output terminal of common mode inductance L1 is connected with the outprimary of the first transformer T1, two safety electric capacity C1, between the input end that C2 is connected to common mode inductance L1 and output terminal, the secondary coil of the first transformer T1 is connected with the first rectifier bridge module DB1, the output terminal of the first rectifier bridge module DB1 is connected to the input end of power supply voltage stabilizing chip U1, the output terminal of power supply voltage stabilizing chip U1 exports 20V power supply to IGBT drive circuit, two filter capacitor C3, C4 is parallel to input end and the output terminal of power supply voltage stabilizing chip U1 respectively, and the first electrochemical capacitor CD1 is parallel to the input end of power supply voltage stabilizing chip U1, and the earth terminal of power supply voltage stabilizing chip U1 connects the cathode output end of feed circuit by the first voltage stabilizing diode Z1.
As shown in Figure 5, described IGBT drive circuit comprises: IGBT drive module U2, second rectifier bridge module DB2, first voltage dependent resistor (VDR) RV1, waveform absorbing circuit, first to the 5th resistance R1 ~ R5, second and the 3rd electrochemical capacitor CD2, CD3 and photo-coupler U3, wherein: the input end of the second rectifier bridge module DB2 connects voltage input end and voltage output end respectively, the output terminal of the second rectifier bridge module DB2 and the input of IGBT module, export and connect, first voltage dependent resistor (VDR) RV1 is connected in parallel on the input of IGBT module Q1, between output terminal, resistance R1 becomes protection circuit to be connected in parallel on the input of IGBT module Q1 with electric capacity C1 tandem compound with after diode D1 parallel connection again, between output terminal, first port of IGBT drive module U2 respectively with the output terminal of IGBT module, second electrochemical capacitor CD2 connects, second port the respectively with three electrochemical capacitor CD3, resistance R3, + the 20V of feed circuit shown in Fig. 4 connects, 3rd port is connected with IGBT module drive end by resistance R2, five-port is connected with optocoupler U3, 6th port is connected with IGBT module input end by diode D2, the Lu of Gong electricity electricity shown in 9th port with Fig. 4 ?20V be connected, 14 port is connected with single-chip I/O mouth, tenth five-port supplies electrical connection by the 5th resistance R5 and VCC, second and the 3rd electrochemical capacitor CD2, Gong electricity electricity Lu shown in the common connection layout 4 of the other end of CD3 ?20V end, optocoupler the 3rd port supplies electrical connection by the 4th resistance R4 and VCC, and export to single-chip microcomputer INTA and hold, optocoupler the 4th port is connected with power supply ground.
Described IGBT drive module U2 adopts EXB841 chip; for driving and protection IGBT; this module 20V powers; Single-chip Controlling is input as the 14 port, and it is INTA end that IGBT protection exports single-chip microcomputer, and being connected with IGBT module is the first, the 3rd, the 6th port; alternating current flows through IGBT module by bridge heap; the through and off of alternating current are controlled, because IGBT can only control DC, AC need to change through rectifier bridge module by IGBT module.
As shown in Figure 6, described voltage sample testing circuit 12 comprises: alternating current input J1, second transformer T2, 3rd rectifier bridge module DB3, adjustable resistance RV1, two build-out resistor R6, R7, 4th and the 5th electrochemical capacitor CD4, CD5, second voltage stabilizing diode Z2, wherein: alternating current input J1 is connected with the second transformer T2, alternating current flows to the second transformer T2 by alternating current input J1, 3rd rectifier bridge module DB3 is connected with the second transformer T2, alternating current passes through transformation, arrangement becomes pulsating direct current signal, 3rd rectifier bridge module DB3 is connected with adjustable resistance RV1, adjustable resistance RV1, build-out resistor R6, R7 and the 4th and the 5th electrochemical capacitor CD4, CD5 is combined into filtering circuit together, the ripple of filtering pulsating direct current signal, through voltage stabilizing diode Z2, its direct current signal is tended towards stability again.
The second described transformer is step-down transformer, and its elementary number of secondary turns compares 220:5.
Described control circuit 13 comprises: MCU chip C8051F340 and control IO pin thereof.
Described voltage controller power source driver 21 comprises: the motor-drive circuit connected successively and motor, wherein: control circuit 13 exports and controls rotating signal to the rotation of motor-drive circuit drive motor, thus drives voltage controller power source 22 to adjust drop-off voltage.
As shown in Figure 7, the present embodiment course of work is as follows:
1) testing crew judges that test specimen power supply is single phase poaer supply or three-phase supply and judges test specimen power capacity and the need of joining hand-operated pressure regulation appliance; By drop-off voltage value needed for the Human-machine Control unit setting test specimen on main control computer;
2) whether main control computer connects regulator by voltage sample testing circuit detection main control computer, is turn to step 3), otherwise turn to step 5);
3) the voltage sample testing circuit of main control computer carries out voltage sample to voltage controller power source, and sampled result is transferred to control circuit;
4) sampled result is transferred to Human-machine Control unit by control circuit, and result shows by Human-machine Control unit; Meanwhile, according to drop-off voltage and the default voltage of voltage controller power source transmission, control circuit controls voltage controller power source driver and rotates, and drives voltage controller power source to adjust drop-off voltage, turns to step 6);
5) Human-machine Control unit reminds testing crew to connect autogamy regulator, and testing crew realizes the adjustment of drop-off voltage by the change of autogamy regulator hand rotation;
6) result after adjustment shows by voltmeter head, and test specimen selects setting voltage or drop-off voltage to test by IGBT switch switching circuit on demand simultaneously.
Compared with prior art, the advantage of this device is: according to the regulator of different product demand apolegamy different size, different capabilities and quantity, can have extensibility; And alleviate overall weight and volume, conveniently mobile, test is arranged and metering.
Claims (7)
1. a separate type voltage sag simulator, it is characterized in that, comprise: the main control computer of modularized encapsulation and at least one regulator of the modularized encapsulation be attached thereto, wherein: regulator exports rated voltage and drop-off voltage to main control computer, main control computer is according to the drop-off voltage value preset, control regulator adjustment drop-off voltage, main control computer and multiple stage regulator combination connecting mode;
Described main control computer comprises: the IGBT switch switching circuit connected successively, voltage sample testing circuit, control circuit and Human-machine Control unit, wherein: IGBT switch switching circuit be connected with test specimen W and receive voltage controller power source adjust after voltage, IGBT switch switching circuit receives input voltage V
inthrough IGBT switch process and output switch switch after voltage to voltage sample testing circuit, voltage sample testing circuit is to the high alternating voltage process after IGBT switching over and export low dc voltage to control circuit, control circuit is to Voltage Drop waveform and parameter through telecommunication circuit process and output voltage falls analog waveform and parameter to Human-machine Control unit, and Human-machine Control unit to set through touch-screen experimenter's experiment parameter and exports to control circuit;
Described regulator comprises: voltage controller power source driver, voltage controller power source and voltmeter head, wherein: voltage controller power source receives input voltage V
incarbon brush slip on coil is driven to obtain changing voltage and export this changing voltage to voltmeter head through oneself motor, and export this changing voltage to IGBT switch switching circuit, voltage controller power source driver be connected with voltage controller power source with control circuit respectively and reception control circuit pressure regulation instruction and drive voltage controller power source motor to carry out pressure regulation;
Described IGBT switch switching circuit comprises: the feed circuit be sequentially connected in series, IGBT drive circuit and IGBT module.
2. separate type voltage sag simulator according to claim 1, it is characterized in that, described feed circuit comprise: two safety electric capacity C1, C2, common mode inductance L1, first transformer T1, first rectifier bridge module DB1, first electrochemical capacitor CD1, two filter capacitor C3, C4, power supply voltage stabilizing chip U1 and the first voltage stabilizing diode Z1, wherein: the output terminal of common mode inductance L1 is connected with the outprimary of the first transformer T1, two safety electric capacity C1, between the input end that C2 is connected to common mode inductance L1 and output terminal, the secondary coil of the first transformer T1 is connected with the first rectifier bridge module DB1, the output terminal of the first rectifier bridge module DB1 is connected to the input end of power supply voltage stabilizing chip U1, the output terminal of power supply voltage stabilizing chip U1 exports 20V power supply to IGBT drive circuit, two filter capacitor C3, C4 is parallel to input end and the output terminal of power supply voltage stabilizing chip U1 respectively, first electrochemical capacitor CD1 is parallel to the input end of power supply voltage stabilizing chip U1, the earth terminal of power supply voltage stabilizing chip U1 connects the cathode output end of feed circuit by the first voltage stabilizing diode Z1.
3. separate type voltage sag simulator according to claim 1, it is characterized in that, described IGBT drive circuit comprises: IGBT drive module U2, second rectifier bridge module DB2, first voltage dependent resistor (VDR) RV1, waveform absorbing circuit, first to the 5th resistance R1 ~ R5, second and the 3rd electrochemical capacitor CD2, CD3 and photo-coupler U3, wherein: the input end of the second rectifier bridge module DB2 connects voltage input end and voltage output end respectively, the output terminal of the second rectifier bridge module DB2 and the input of IGBT module, export and connect, first voltage dependent resistor (VDR) RV1 is connected in parallel on the input of IGBT module Q1, between output terminal, resistance R1 becomes protection circuit to be connected in parallel on the input of IGBT module Q1 with electric capacity C1 tandem compound with after diode D1 parallel connection again, between output terminal, first port of IGBT drive module U2 respectively with the output terminal of IGBT module, second electrochemical capacitor CD2 connects, second port the respectively with three electrochemical capacitor CD3, resistance R3, feed circuit cathode output end connects, 3rd port is connected with IGBT module drive end by resistance R2, five-port is connected with optocoupler U3, 6th port is connected with IGBT module input end by diode D2, 9th port is connected with feed circuit cathode output end, 14 port is connected with single-chip I/O mouth, tenth five-port supplies electrical connection by the 5th resistance R5 and VCC, second and the 3rd electrochemical capacitor CD2, the other end of CD3 connects feed circuit cathode output end end jointly, optocoupler the 3rd port supplies electrical connection by the 4th resistance R4 and VCC, and export to single-chip microcomputer INTA and hold, optocoupler the 4th port is connected with power supply ground.
4. separate type voltage sag simulator according to claim 3; it is characterized in that; described IGBT drive module U2 adopts EXB841 chip; for driving and protection IGBT; this module 20V powers; Single-chip Controlling is input as the 14 port; it is INTA end that IGBT protection exports single-chip microcomputer; being connected with IGBT module is the first, the 3rd, the 6th port; alternating current flows through IGBT module by bridge heap; the through and off of alternating current are controlled, because IGBT can only control DC, AC need to change through rectifier bridge module by IGBT module.
5. separate type voltage sag simulator according to claim 1, it is characterized in that, described voltage sample testing circuit comprises: alternating current input J1, second transformer T2, 3rd rectifier bridge module DB3, adjustable resistance RV1, two build-out resistor R6, R7, 4th and the 5th electrochemical capacitor CD4, CD5, second voltage stabilizing diode Z2, wherein: alternating current input J1 is connected with the second transformer T2, alternating current flows to the second transformer T2 by alternating current input J1, 3rd rectifier bridge module DB3 is connected with the second transformer T2, alternating current passes through transformation, arrangement becomes pulsating direct current signal, 3rd rectifier bridge module DB3 is connected with adjustable resistance RV1, adjustable resistance RV1, build-out resistor R6, R7 and the 4th and the 5th electrochemical capacitor CD4, CD5 is combined into filtering circuit together, the ripple of filtering pulsating direct current signal, through voltage stabilizing diode Z2, its direct current signal is tended towards stability again.
6. separate type voltage sag simulator according to claim 5, is characterized in that, the second described transformer T2 is step-down transformer, and its elementary number of secondary turns compares 220:5.
7. separate type voltage sag simulator according to claim 1, it is characterized in that, described voltage controller power source driver comprises: the motor-drive circuit connected successively and motor, wherein: control circuit exports and controls rotating signal to the rotation of motor-drive circuit drive motor, thus drives voltage controller power source adjustment drop-off voltage.
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| CN201510237669.7A CN104793090A (en) | 2015-05-11 | 2015-05-11 | Separate voltage drop simulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706963A (en) * | 2015-07-28 | 2017-05-24 | 国网智能电网研究院 | Large power compression type IGBT package module press mounting test clamp |
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| CN106706963A (en) * | 2015-07-28 | 2017-05-24 | 国网智能电网研究院 | Large power compression type IGBT package module press mounting test clamp |
| CN106706963B (en) * | 2015-07-28 | 2024-05-31 | 国网智能电网研究院 | High-power crimping IGBT encapsulation module pressure equipment test fixture |
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