CN204882737U - Novel dipulse test platform - Google Patents

Abstract

The utility model relates to a novel dipulse test platform, including power unit, control section, loading section, control section includes ac contactor K1, direct current contactor K2, boost module HVPOWER, resistance R1, R2, R3, R4, R5, R6, current sensor U1, voltage sensor U2, voltmeter U3 and U4, control DSP board, the loading section includes relay K3, K4, K5, K6, K9, K10 and reactor L1, 6 individual relay interlocking closed loop, the automatic selection control of realization that can the maximize can be directed against the IGBT position of selecting, and the realization is to the switching of load. The utility model discloses can satisfy the incessant test of heterogeneous many bridges wall, convenient and fast benefits to industrial production's improvement and life life safety's protection, and can satisfy busbar voltage in the middle of the biggest 2000V, compares prior art, more can satisfy the track of high voltage and hand over the field demand.

Description

Novel double impulse test platform

Technical field

The utility model relates to a kind of dipulse testing apparatus, especially at the power module test of high-voltage large current.

Background technology

Along with the develop rapidly of China's technology of track traffic, alternating current drive technology is increasingly mature.Current transformer obtains everybody great attention as parts the most key in alternating-current actuating system, and its development and technical merit are subject to the great attention of country, and IGBT is converter device core component, directly determines the stability of electric drive system.

Traditional double impulse test can simply be tested single IGBT, but we know in an inverter and generally have multiple IGBT, according to general electric utility requirement, we must carry out experimental test to each IGBT, traditional double impulse test platform, must treat power scale module during test to disassemble, this, from the angle of experiment, adds uncertain factor.Double impulse test platform platform traditional thus cannot meet the requirement to the heterogeneous many brachium pontis long run test of inverter, and particularly under the environment of high-voltage large current, traditional double impulse test platform inferior position clearly.

Utility model content

The not enough the utility model existed for prior art provides a kind of simple and quick, IGBT drive module dipulse proving installation that high-voltage large current, measurement efficiency are high, to meet the requirement of high-voltage large current double impulse test platform.The utility model simplifies the operation link, increases the intelligent and security of dipulse test, provides strong guarantee to commercial production and scientific research research and development.

Technical scheme: providing a kind of novel double impulse test platform to overcome the above problems the utility model, it is characterized in that: comprise power unit, control section, loading section;

Power unit comprises low-tension supply and high-voltage power supply, and low-tension supply provides power supply to control section; High-voltage power supply provides power supply to measured power module;

Described control section comprises A.C. contactor K1, D.C. contactor K2, boost module HVPOWER, resistance R1, R2, R3, R4, R5, R6, current sensor U1, voltage sensor U2, voltage table U3 and U4, controls dsp board; The input end of triple-phase line difference incoming transport contactor K1, the input end of the output termination boost module HVPOWER of A.C. contactor K1, the N line input end of N wire end boost module HVPOWER, boost module HVPOWER exports "+" number line and "-" number line, and "+" number line of boost module HVPOWER and "-" number line receive "+" number line and "-" number line of power scale module respectively; D.C. contactor K2 mono-termination "+" number line, after other end series resistor R5 and R6, access "-" number line; Voltage table U3 and U4 is respectively by being connected between "+" number line of boost module HVPOWER and "-" number line after R1, R2 and R3, R4 dividing potential drop; Voltage sensor U2 is connected between "+" number line of boost module HVPOWER and "-" number line, for measuring the magnitude of voltage between "+" number line and "-" number line; Current sensor U1 is connected on "+" number line of boost module HVPOWER, for measuring the current value on "+" number line; Control dsp board is provided with EN enable signal and SLK selects signal receiving end and IGBT sent to the transmitting terminal of driving pulse " CPH ", " UH ", " UB ", " VH ", " VB ", " WH " and " WB " signal.

D.C. contactor K2 is when experiment porch power-off, normally closed, ensures that intermediate-bus voltage is zero, thus ensure that personal safety.

Described loading section comprises relay K 3, K4, K5, K6, K9, K10 and reactor L1; One end of " U " number line of power model to be measured, " V " number line, " W " number line and " CHP " number line contact relay K3, K4, K5 and K6 respectively, relay K 3, K4, K5 and K6 other end connect one end of reactor L1 after exporting short circuit, one end of other one end difference contact relay K9 and K10 of reactor L1; Relay K 9 in addition one end receives "+" number line of power scale module, and relay K 10 in addition one end receives "-" number line of power scale module.

The design of loading section can realize the function selected heterogeneous many brachium pontis, and relay K 9 and K10 can realize the function selected upper and lower bridge arm, and relay K 3, K4, K5, K6 can realize the function selected " U ", " V ", " W " three-phase.

6 relay interconnection closed loops, maximizedly can realize robotization and select to control, for selected IGBT position, can realize the switching to load.

The application of novel double impulse test platform:

1. power model to be measured is pushed test site, "+" number line exported by boost module HVPOWER is with "-number line receives "+" number line and "-" number line of power scale module respectively;

2. output " U " number line of power model to be measured, " V " number line, " W " number line are connect loading section respectively; By power model to be measured exports "+" number line, "-" number line connects loading section respectively "+" number line, "-" number line;

3. power unit is started;

4. control section sends close command to A.C. contactor K1, and A.C. contactor K1 closes, and D.C. contactor K2 disconnects; Boost module HVPOWER works, and when power model electric capacity both end voltage to be measured rises to ratings, control section sends dipulse drive singal to power model to be measured;

5. gather the voltage and current waveform of air reactor L1, and preserve A.C. contactor K1 and disconnect, D.C. contactor K2 closes, and the electricity on power model electric capacity to be measured is discharged rapidly by resistance R5, R6;

6. again select the IGBT not carrying out testing, repeat above-mentioned steps.

Beneficial effect:

The utility model, can meet the uninterrupted test of heterogeneous many bridges wall, convenient and swift, all benefits to the protection of industrial raising and life life security.

This novel double impulse test platform can meet maximum 2000V intermediate-bus voltage, compares prior art, more can meet high-tension track and hand over domain requirement; Measuring accuracy gets a promotion; It is more convenient to operate, and can greatly enhance productivity.

Accompanying drawing explanation

Fig. 1 is main circuit diagram of the present utility model;

Fig. 2 is the wiring diagram of the utility model measured power module;

Fig. 3 is load portion component of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model will be further described.

As shown in Figures 1 to 3, the utility model provides a kind of novel double impulse test platform, comprises power unit, control section, loading section;

Power unit comprises low-tension supply and high-voltage power supply, and low-tension supply provides power supply to control section; High-voltage power supply provides power supply to measured power module;

Described control section comprises A.C. contactor K1, D.C. contactor K2, boost module HVPOWER, resistance R1, R2, R3, R4, R5, R6, current sensor U1, voltage sensor U2, voltage table U3 and U4, controls dsp board; The input end of triple-phase line difference incoming transport contactor K1, the input end of the output termination boost module HVPOWER of A.C. contactor K1, the N line input end of N wire end boost module HVPOWER, boost module HVPOWER exports "+" number line and "-" number line, and "+" number line of boost module HVPOWER and "-" number line receive "+" number line and "-" number line of power scale module respectively; D.C. contactor K2 mono-termination "+" number line, after other end series resistor R5 and R6, access "-" number line; Voltage table U3 and U4 is respectively by being connected between "+" number line of boost module HVPOWER and "-" number line after R1, R2 and R3, R4 dividing potential drop; Voltage sensor U2 is connected between "+" number line of boost module HVPOWER and "-" number line, for measuring the magnitude of voltage between "+" number line and "-" number line; Current sensor U1 is connected on "+" number line of boost module HVPOWER, for measuring the current value on "+" number line; After controlling dsp board reception EN enable signal and SLK selection signal, driving pulse " CPH ", " UH ", " UB ", " VH ", " VB ", " WH " and " WB " signal are sent to IGBT;

Described loading section comprises relay K 3, K4, K5, K6, K9, K10 and reactor L1; One end of " U " number line of power model to be measured, " V " number line, " W " number line and " CHP " number line contact relay K3, K4, K5 and K6 respectively, relay K 3, K4, K5 and K6 other end connect one end of reactor L1 after exporting short circuit, one end of other one end difference contact relay K9 and K10 of reactor L1; Relay K 9 in addition one end receives "+" number line of power scale module, and relay K 10 in addition one end receives "-" number line of power scale module.

Workflow:

AC380V inputs, and A.C. contactor K1 closes, and D.C. contactor K2 disconnects.Control section sends instruction, and boost module (HVPOWER module) starts, and keeps constant current to charge to measured power module capacitance.When measured power module capacitance powers on voltage rise to bus voltage value, control section sends open command to A.C. contactor K1, and after A.C. contactor K1 disconnects, control section is treated power scale module and sent dipulse control signal.

Relay K 3, K4, K5, K6, K9, K10 can carry out action according to selected IGBT position.

IGBT position and the actuating of relay please be as follows

K3

K4

K5

K6

K9

K10

UH

○

×

×

×

×

○

UB

○

×

×

×

○

×

VH

×

○

×

×

×

○

VB

×

○

×

×

○

×

WH

×

×

○

×

○

WB

×

×

○

○

×

CHP

×

×

×

○

×

○

Remarks: "○" is closed, and "×" is off.

The application of novel double impulse test platform:

1. power model to be measured is pushed test site, "+" number line exported by boost module HVPOWER is with "-number line receives "+" number line and "-" number line of power scale module respectively;

2. output " U " number line of power model to be measured, " V " number line, " W " number line are connect loading section respectively; By power model to be measured exports "+" number line, "-" number line connects loading section respectively "+" number line, "-" number line;

3. power unit is started;

4. control section sends close command to A.C. contactor K1, and A.C. contactor K1 closes, and D.C. contactor K2 disconnects; Boost module HVPOWER works, and when power model electric capacity both end voltage to be measured rises to ratings, control section sends dipulse drive singal to power model to be measured;

5. gather the voltage and current waveform of air reactor L1, and preserve A.C. contactor K1 and disconnect, D.C. contactor K2 closes, and the electricity on power model electric capacity to be measured is discharged rapidly by resistance R5, R6;

6. again select the IGBT not carrying out testing, repeat above-mentioned steps.

The foregoing is only preferred embodiment of the present utility model, be not restricted to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.

Claims (1)

1. a novel double impulse test platform, is characterized in that: comprise power unit, control section, loading section;

Power unit comprises low-tension supply and high-voltage power supply, and low-tension supply provides power supply to control section; High-voltage power supply provides power supply to measured power module;

Described control section comprises A.C. contactor K1, D.C. contactor K2, boost module HVPOWER, resistance R1, R2, R3, R4, R5, R6, current sensor U1, voltage sensor U2, voltage table U3 and U4, controls dsp board; The input end of triple-phase line difference incoming transport contactor K1, the input end of the output termination boost module HVPOWER of A.C. contactor K1, the N line input end of N wire end boost module HVPOWER, the output terminal of boost module HVPOWER has "+" number line and "-" number line, and "+" number line of boost module HVPOWER and "-" number line receive "+" number line and "-" number line of power scale module respectively; D.C. contactor K2 mono-termination "+" number line, after other end series resistor R5 and R6, access "-" number line; Voltage table U3 and U4 is respectively by being connected between "+" number line of boost module HVPOWER and "-" number line after R1, R2 and R3, R4 dividing potential drop; Voltage sensor U2 is connected between "+" number line of boost module HVPOWER and "-" number line, for measuring the magnitude of voltage between "+" number line and "-" number line; Current sensor U1 is connected on "+" number line of boost module HVPOWER, for measuring the current value on "+" number line; Control dsp board is provided with EN enable signal and SLK selects signal receiving end and IGBT sent to the transmitting terminal of driving pulse " CPH ", " UH ", " UB ", " VH ", " VB ", " WH " and " WB " signal;

Described loading section comprises relay K 3, K4, K5, K6, K9, K10 and reactor L1; One end of " U " number line of power model to be measured, " V " number line, " W " number line and " CHP " number line contact relay K3, K4, K5 and K6 respectively, relay K 3, K4, K5 and K6 other end connect one end of reactor L1 after exporting short circuit, one end of other one end difference contact relay K9 and K10 of reactor L1; Relay K 9 in addition one end receives "+" number line of power scale module, and relay K 10 in addition one end receives "-" number line of power scale module.