CN1059602A

CN1059602A - Chopper testing table for underground railway

Info

Publication number: CN1059602A
Application number: CN 90107504
Authority: CN
Inventors: 王连富; 王继红
Original assignee: Changchun Passenger Carriage Plant Of Railway Ministry
Current assignee: Changchun Passenger Carriage Plant Of Railway Ministry
Priority date: 1990-09-03
Filing date: 1990-09-03
Publication date: 1992-03-18
Anticipated expiration: 2005-09-03
Also published as: CN1030108C

Abstract

The invention discloses by the power electronics host computer system 32 dedicated computer systems.The chopper testing table for underground railway that special-purpose large scale test interface system constitutes can be cut the stream power electronic system to the high-power contrary conducting thyristor of underground railway electric motor coach direct current series motor electric propulsion regenerative braking, directly tests and simulation test.Be applicable to electric motor coach scientific research, production and operation department.

Description

Chopper testing table for underground railway

The invention discloses a kind of chopper testing table for underground railway that detects the high-power contrary conducting thyristor chopper power electronic system of test chopper control sub. electric motor coach, particularly a kind of by 32 dedicated computer systems, special-purpose large scale test interface system, the incorporate chopper testing table for underground railway of power electronics host computer system.Belong to traffic and transport field.

Before the present invention is unexposed,, adopt common apparatus usually, instrument and instrument to the high-power contrary conducting thyristor chopper power electronic system detection test of chopper control sub. electric motor coach direct current series motor electric propulsion regenerative braking.Since common apparatus, its most of function singlenesses of instrument and meter, the multiple parameter that can not test voltage-regulating system of the chopping, and waveform and characteristic are not easy to data acquisition, data analysis processing and record and print.Therefore, need instrument, instrument and the equipment of many such function singlenesses,, still can not show accurate test result even like this to the test of chopper power electronic system complete detection.

At present abroad general logic determines pick-up unit is adopted in the detection test of high-power contrary conducting thyristor chopper power electronic system, this device can only be done the detection of the property judged, can not programme-controlled automatic test, and its precision is not high yet.Will develop the sub. passenger vehicle at traffic and transport field and make it more advanced, more perfect and batch process, the testing apparatus that does not have high-accuracy multifunctional is not all right.Therefore, society presses for a kind of checkout equipment appearance of high-accuracy multifunctional.

The objective of the invention is to disclose a kind of can be comprehensively accurately to the high-power contrary conducting thyristor copped wave power electronic system of chopper control sub. electric motor coach direct current series motor electric propulsion regenerative braking, directly test chopper testing table for underground railway with simulation test.

The present invention can be to the chopper voltage tester, the chopper frequencies test, the test of chopper conduction ratio, the traction current characteristic test, the traction net is pressed limited characteristic test, traction current characteristic time constant measuring, the mensuration of regenerative braking current time constant, traction computing amplification characteristic is measured, regenerative braking operational amplifier characteristic measurement, and overvoltage of direct current detects test, exchange under-voltage and detect test, uneven mutually the detection tested, auxiliary absorption detecting test, anti-idle running detection test, commutation failure detects test, the energy high-speed data acquisition, program control test and high-speed data are handled, but on-line testing, functional test and integration test, and waveform parameter is measured automatically, and test result analysis is handled, and displayed record is printed.

Task of the present invention is finished as follows.

The power electronics host computer system, 32 dedicated computer systems, integrated main platform, pair platform and the control desk of being sub-packed in of extensive interface system.Wherein, dedicated computer system is by plotting apparatus, color monitor, and disk drive, 32 special purpose computers, program library software, the LcZ tester, data collector, the waveform parameter device constitutes.

The power electronics host computer system is by AC stabilizer, simulation test device, analog signal instrumentation, and the copped wave electronic installation, the simulation flip flop equipment, high-power contrary conducting thyristor units, analoging detecting device, direct-flow voltage stabilizer constitutes,

The large scale test interface system is controlled microcomputer by stabilized voltage supply, control program software, and single channel 125 tunnel, binary channels 142 road constitutes.

Fig. 1 system block diagram,

Fig. 2 automatic control system figure (I)

Fig. 3 automatic control system figure (II)

Fig. 4 large scale test interface system figure,

Fig. 5 analog voltage signal schematic diagram,

Fig. 6 analog current signal schematic diagram,

Fig. 7 voltage regulator circuit schematic diagram,

Fig. 8 flip-flop circuit schematic diagram,

Fig. 9 relay circuit schematic diagram.

Figure 10 instruction device circuit theory diagrams,

Figure 11 protector circuit theory diagrams,

Figure 12 amplifier circuit schematic diagram.

Figure 13 phase shifter circuit schematic diagram,

Figure 14 converter circuit schematic diagram,

Figure 15 adjuster circuit schematic diagram,

The contrary conducting thyristor gating circuit figure of Figure 16,

Below in conjunction with accompanying drawing the present invention is described in further detail:

Can have gained some understanding to general structure of the present invention with reference to Fig. 1 system block diagram.

With reference to Fig. 2, Fig. 3 automatic control system, by alternating voltage 220V ± 10%, 50HZ ± 1 power supply, JW provides alternating current steady voltage plug 220V, and precision of voltage regulation 0.1%ZW provides D.C. regulated power supply, and 0～150V is adjustable continuously, and load capacity is 5A.

MCS is 32 dedicated computer systems, and DAU is a data collector, and QMS LcS is an intelligent test device, CCU, and SU, TU, pU, MU are the power electronics host computer systems, IU is the large scale test interface system, totally constitutes automatic test control system.

In the circuit, HA1～HA9.HB1～HB9 toggle switch connects measured signal, and each toggle switch has 10 contacts.HA0。HB0 controls gating HA1～HA9 respectively, and the corresponding contact on HB1～HB9 toggle switch is parallel with one another, the first winding point H00-1 to H03-1, and H06～1, H09～1 are connected with the HA0 common port, and the second winding point is connected with the common port of HB0.The 3rd group is connected with test unit to the 9th winding point.The common port of H00～H03, H06～H09 toggle switch is connected with high-frequency socket CH1～CH8.The test probe of intelligent test device is connected with high-frequency socket.

With reference to Fig. 4 large-scale experiment interface system figure, this system is by 220V ± 10%, and 50HZ ± 1 ac power supply provides 24V and 5V voltage of direct-flow voltage regulation respectively through integrated stable voltage circuit W and W voltage stabilizing.

This system adopts system controlled by computer, and integrated code translator GB0～GB16 decoding scheme is arranged, photoelectricity coupling buffer circuit, and J1～J197 electromagnetic isolation relay conversion circuit adopts XC～36～55, Xc～18～4 highly reliable line spring plug-in unit.Control program (software) is solidificated among the integrated circuit.

Among Fig. 4, pB0～pB7 is the control microcomputer interface, and pB4～pB7 connector is imported the input end of 16 line output decoder BG0, and pB0～pB3 connects the input end of all the other 16 Block decoder.Code translator BG1～BG16 input end parallel connection is by the code translator control end of the BG1～BG16 of 16 output lines of pB0～pB3 data line control BG0.When wherein a Block decoder control end was high level, one of these code translator 16 lines were gated for high level signal, isolated the electromagnetic isolation ALT-CH alternate channel through the photoelectricity coupling.Single channel 125 tunnel, binary channels 142 tunnel.

With reference to Fig. 5, by high frequency, high pressure, high power contravariant device circuit, integrated stable voltage circuit, highly reliable integrated operational amplifier circuit, serial regulating circuit constitutes the aanalogvoltage circuit.Wherein inverter circuit is imported high pressure 110V ± 25% DC voltage.At employing high-frequency inversion stabilized voltage supply, the characteristics that the sub. mains ripple is big, the isolation high-frequency transformer of inverter adopts high frequency ferrite magnetic jar, and gold film is adopted in insulation, former limit and pair equally distributed manufacturing process of limit winding.Simultaneously by resistance R O stabilivolt DWO and tickler Wo, commutation diode D5～D6, tickler W3, W4 and resistance R 1, capacitor C 1 are formed feedback circuit collaborative integrated regulator F1, F2, highly reliable integrated transporting discharging F3, F4 and highly reliable transistor T 3, T ₄Finish and produce the high-precision analog potential circuit.

With reference to Fig. 6 analog current circuit.This circuit input ac voltage 220V ± 1% reaches 0 through transformation rectifying and wave-filtering link voltage stabilizing amplification output ± 24V DC voltage precision.1%, electric current 0～1A.Wherein voltage stabilizing amplification rating unit and aanalogvoltage Fig. 5 principle are basic identical.

With reference to Fig. 7 tandem type tracing type high precision mu balanced circuit.F1F2 is an integrated operational amplifier among the figure, and its enlargement factor is high in order to improve the precision of voltage regulation.The 3 termination reference voltage 6.2V of F1, R ₁₂, R _W, R _BSample resistance is given the inverting input of operational amplifier with the part of Vo, with reference voltage V ₂Compare and enlarge.R ₆Be current-limiting resistance, T ₃, T ₇It is the compound adjustment pipe.T ₅Be amplifying triode.

F ₂End of oppisite phase be connected sample resistance R with sample resistance ₅Be connected with the positive supply output terminal, negative supply voltage changed follow positive voltage variation, in-phase input end is through R ₁₄Ground connection.T ₄, T ₈Be compound adjustment pipe, R ₉Be current-limiting resistance, T ₆Be amplifier tube, C ₈, C ₉Be filter capacitor, constitute mu balanced circuit by above main devices, finish straight-friendship-straight conversion output ± 15V, the 24V DC voltage makes that when sub. chopper control electric motor coach was crossed disconnected the district, the electronic control system power supply was uninterrupted.

With reference to Fig. 8 flip-flop circuit, this circuit is by K ₁₀₁And K ₀Input, high power transistor T ₁T ₂Constitute the common emitter push-pull circuit with ferrite high-frequency transformer B, export stable alternation square wave, conversion frequency is that the 15KC. stabilizing circuit is by R ₁, DW and W5, D ₅-D ₈And R ₁, C ₁W ₃, W ₄Constitute.The course of work is: the W5 feedback, and through D ₅-D ₈Rectification produces DC voltage and the R that changes with output ₁, the normal voltage that DW produces compares, and W is given in negative feedback ₃, W ₄Carry out voltage stabilizing, T ₃, D ₄, D ₁₀, W ₈, W ₉, and T ₄, D ₁₁, D ₁₂, W ₆, W ₇Constitute alternation electronic non-contact switch circuit respectively, by signal T from person in charge's amplifier ₅, T ₆Control.Constitute flip-flop circuit by above-mentioned two parts.W ₁₀And D ₂₅～D ₂₈Form general high frequency bridge rectifier circuit, output direct current 24V.

With reference to Fig. 9 relay circuit, this circuit has 11 on JRC-8M-24 type relay, every relay coil protection diode in parallel.Relay pick-up voltage V _DC〉=18V(supply voltage 24V); Relay release voltage V _DC≤ 3V, relay circuit are used for traction working condition and regenerative braking operating mode circuit conversion.

With reference to Figure 10 instruction device circuit, this circuit is by mu balanced circuit K ₁₀₅, K ₁₀₆, K ₀Provide.High precision stable DC voltage ± 15V power supply, F ₁Be voltage follower F ₂Be integrating amplifier, F ₃Be comparison amplifier, T ₁T ₂Be emitter follower.R ₂₇, R ₂₈, R ₂₉, F ₃, T ₂Form the traction instruction circuit.The electric propulsion working condition is divided one, two, three.The chopper conduction ratio is α ₁=0.1，α ₂＝0。5，α ₃＝0。9。F ₁, R ₅, R ₇, R ₉, R ₁₃, R ₁₅, R ₁₇, T ₁Be the regenerative braking instruction circuit, the regenerative braking working condition is divided into seven positions:

η ₁＝ (1K)/(4K+2K+1K) ，η ₂＝ (2K)/(4K+2K+1K) ，η ₃＝ (3K)/(4K+2K+1K) ，

η ₄＝ (4K)/(4K+2K+1K) ，η ₅＝ (5K)/(4K+2K+1K) ，η ₆＝ (6K)/(4K+2K+1K) 。

With reference to Figure 11 protector circuit, this circuit provides the direct current 15V voltage of high stable, GD by voltage regulator circuit ₁, GD ₂, JC ₁₅, JC ₁₆, JC ₁₂, T ₁Constitute commutation failure protection electronic circuit, signal is by K ₀₃, K ₀₄, K ₇₁₁, K ₇₁₂, K ₇₀₅, K ₇₀₆Input is by K ₅₀₁Send the protection control signal.Control and protection speed-sensitive switch.

F ₁, F ₂, JC ₁₁JC ₁₂, T ₁Constitute power supply three rail ground protection electronic circuits, three rail ground signallings are imported by K44B, by K501 output control signal, F ₅, F ₆, T ₃Constitute chopper phase failure protection electronic circuit, K ₀₃, K ₀₄Input is by K ₅₀₃Output.F ₇, T ₄Constitute the direct current net and press the under-voltage protection electronic circuit, export control signal by K505 by K44A input+US.F ₃, JC ₁₁, JC ₁₂, T ₁Constitute net and press overvoltage protection, by K44A input+US, by K501 output control signal.F ₈, T ₅Constitute the AC undervoltage protection.

With reference to Figure 12 master put, pay put, overvoltage protection, auxilliary resistance absorb circuit.This circuit is by T ₀, T

, T

, T ₇, T ₉, T ₁₁Connect and compose more common circuit with other element, finish the present invention mainly put, pay put, task that the auxilliary resistance of overvoltage protection absorbs.

With reference to Figure 13 phase shifter circuit, this circuit provides galvanic current to press 15V by voltage regulator circuit, forming crystal oscillating circuit by the JZ quartz crystal device, is that I is 265HZ with the II phase frequency mutually through frequency division, and phase differential 180 degree are as the phase frequency of high-power contrary conducting thyristor chopper.Predominant frequency 530HZ is synthesized in copped wave.

Main pulse is through T ₄, T ₆Amplify, by K ₇₀₁, K ₇₀₂Output to power amplifier circuit.Power amplifier circuit voltage is provided by flip-flop circuit for 75V～80V.Main pulse triggers the contrary conducting thyristor conducting of high-power master through power amplification control.

F ₁, C ₆, T ₁And F ₂, C ₁₁, T ₂Be saw-tooth wave generating circuit.The master control synchronizing signal is through F ₁, F ₂The two-phase sawtooth signal that integrating amplifier produces is respectively with K from adjuster circuit ₉₀₉, K ₉₁₀Signal voltage compares, again through exchanging by T ₃, T ₄Amplify, by K ₇₀₃, K ₇₀₄Output to power amplifier circuit, pay a contrary conducting thyristor conducting through power amplification control triggering again through the pulse of paying of phase shift.Make main the shutoff carry out chopper control owing to pay the conducting of contrary conducting thyristor against the conducting thyristor.F in the circuit ₃, F ₄Be the voltage comparison amplifier.

With reference to Figure 14 change-over circuit.This circuit provides high stable DC voltage ± 15V by voltage regulator circuit.The F integrated transporting discharging is a voltage comparator, and this circuit is by K41A input+U é, K43B input-UD, (+Uc and-UD from the instruction device circuit) K ₇₁₁, K ₇₁₂Input is responsible for arteries and veins and is compeled, when being responsible for the conduction angle increase mutually along with I phase, II and reaching maximum conduction angle, and JC ₉Two input ends are electronegative potential, by K41A input+UC and K43B input-UD relatively, when-UD=+Uc, JC ₉When another input end also presents electronegative potential, the CT conducting that is triggered, the simulation chopper is by shortwave, N ₁, N ₂, N ₃From tech-generator three-phase alternating voltage, through three-phase bridge rectification output dc voltage and F ₃To point voltage relatively.When regenerative braking per hour is lower than 5 kilometers, the regenerative braking excision.F ₂JC ₁₁, T ₃Constitute auxilliary resistance and absorb circuit.

With reference to Figure 15 adjuster circuit, this circuit is by voltage regulator circuit K ₁₀₅, K ₁₀₆, K ₀Output provides ± 15V voltage F ₅, F ₆, F ₇Automatically control operational amplifier for chopper control electric propulsion work shape shape, provide three command bits of 1.2.3. by the instruction device circuit, through K ₄₀₁Input.T ₃, T ₄Be integrated operational amplifier F ₅, F ₆Voltage follower by K ₉₀₉K ₉₁₀Output to phase shifter circuit.R ₄₂, C ₁₁And R ₄₃, C ₁₂, F ₆Constituent ratio is than integrating circuit.Carry out proportional plus integral control in the traction duty.

F ₁, F ₂, F ₃, F ₄For chopper control reproduction operation state is controlled integrated operational amplifier automatically.Provide seven command bits of braking duty 1.2.3.4.5.6.7. by the instruction device circuit, through K ₄₀₁Input.F ₁Press limit regulator for net, it is imported from instruction device circuit K43A, K41B,

Transistor T ₁, T ₂Be operational amplifier F ₃, F ₄Voltage follower.By K ₉₀₉, K ₉₁₀Output to phase shifter circuit.Traction is finished by JZ with the reproduction operation state exchange.C ₃, R ₁₀, R ₁₁, R ₂₆, C ₅, F ₃And C ₄, R ₂₄, R ₂₅, and C ₆, F ₄Composition, differential, integrating circuit carries out the control of ratio infinitesimal analysis in the regenerative braking duty.

With reference to the contrary conducting thyristor gating circuit of Figure 16, in the circuit, B ₁, B ₃Be that high power strong triggering broad pulse transformer generation square wave triggers broad pulse, B by force ₂, B ₄, B ₅, B ₆, B ₇, B ₈Be to trigger the burst pulse transformer by force, produce the square wave burst pulse.

B ₁And B ₂, B ₃And B ₄The pulse that produces is through compound generation composite pulse.Its pulse front edge is steep, and Control current rising rate of change is (dig)/(dt) 〉=1A/ μ s, and amplitude is 3-5 a times of trigger current, and pulse width can change modulation continuously with conduction angle.

B ₁Be subjected to trigger circuit K ₂₀₃, K ₂₀₅, K ₂₀₇Control, B ₃Be subjected to trigger circuit K ₂₀₄, K ₂₀₆K ₂₀₈Control.

Broad pulse transformer and narrow arteries and veins are compeled transformer and are all adopted high frequency jar shape ferrite core and gold film insulation.

The operation of chopper testing table for underground railway: at first will understand fully each indicator cock on the operator's console panel, with switch H ₁Pull to connecting the position amount.Alternating current steady voltage plug 220V connects, H ₂Pull on position, the 110V D.C. regulated power supply is connected.

Give the power electronic equipment of copped wave electronic installation and detected test by cable with simulating signal, the potentiometer of adjusting on the analog signal instrumentation obtains required voltage, current signal.

Analoging detecting device has 30 dial HA ₀～HA ₉, HB ₀～HB ₉, HO～HO ₇Eight high-frequency sockets are for the switching instrument and meter.Measured point on the subway electric motor coach copped wave control system is connected on the dial switch respectively.With HA ₀Be allocated to 1 position.With HA ₁Dial to 2 or 3 is test point K ₁₂, K ₁₃Oscilloprobe is connected to the waveform that high-frequency socket can obtain voltage stabilizer inversion part, tested K simultaneously ₁₄, K ₁₅, K ₁₇, K ₁₈, K ₁₉Can be with dial HA ₁Be allocated to 4.5.6.7.8.9. successively.Test voltage digital watch 8520A probe connects high-frequency socket just can carry out.

The special purpose computer test interface is by single card microcomputer sequence number to be weaved in the measured point, the single card microcomputer keyboard press into, as long as measure the dial of stirring on the analogue means automatically such as waveform parameter, perhaps on special purpose computer interface device keyboard, press and to measure automatically by the thirty-two bit computer system into test signal.

Claims

1, a kind of by 32 dedicated computer systems 1, power electronics host computer system 2, the chopper testing table for underground railway that large scale test interface system 3 constitutes is characterized in that: the control circuit HA1～HA9 of automatic control system I and automatic control system II, HB1～HB9 toggle switch connects measured signal, each toggle switch has 10 contacts, HAO, HBO controls gating HA1～HA9 respectively, any toggle switch among HB1～HB9, corresponding contact on H00～H03H06～H09 toggle switch is parallel with one another, first winding point H00～1 is to H03～1, H06～1, H09～1 is connected with the HAO common port, the second winding point is connected with the common point of HBO, the 3rd group is connected with test unit to the 9th winding point, detects test signal automatically and is realized by data collector DAU and large scale test interface arrangement IU conversion.

2, chopper testing table for underground railway according to claim 1 is characterized in that: in the large scale test interface system circuit, control microcomputer, decoding scheme, optocoupler circuit, buffer circuits, relay circuit adopt highly reliable line spring plug-in unit, and control program (software) is solidificated among the integrated circuit.

3, chopper testing table for underground railway according to claim 1 is characterized in that: F in the tandem type tracing type high precision mu balanced circuit ₂End of oppisite phase and sample resistance R ₅Connect R ₅Connect with the positive supply output terminal and negative supply voltage to be changed follow positive voltage variation, in-phase input end is through R ₁₄Ground connection, high-power high-frequency inverter circuit R ₁, DW, W5, D5～D8, R ₁And c ₁, W ₃And W ₄Constitute the voltage auto-adjusting circuit.

4, chopper testing table for underground railway according to claim 1 is characterized in that: flip-flop circuit is by high power transistor T ₁₀, T ₂Constitute the common emitter push-pull circuit with oxysome high-frequency high-power transformer B, export stable alternation square wave, conversion frequency is 15KC; The output broad pulse changes with conduction angle, passes through T ₃, T ₄The control of great-power electronic non-contact switch circuit.

5, chopper testing table for underground railway according to claim 1 is characterized in that: instruction device circuit, resistance R ₂₇, R ₂₈, R ₂₉, F ₃, T ₂Form the traction instruction circuit, F ₁, R ₅, R ₇, R ₉, R ₁₃, R ₁₅, R ₁₇, T ₁Form regenerative braking instruction circuit reproduction operation state and be divided into 7 grades:

η ₁＝ (1K)/(4K+2K+1K) ，η ₂＝ (2K)/(4K+2K+1K) ，η ₃＝ (3K)/(4K+2K+1K) ，η ₄＝ (4K)/(4K+2K+1K) ，η ₅＝ (5K)/(4K+2K+1K) ，η ₆＝ (6K)/(4K+2K+1K)

6, chopper testing table for underground railway according to claim 1 is characterized in that: in the protector circuit, and TGD ₁, TGD ₂, JC15, JC16, JC17, T ₁Constitute the commutation failure protection, F ₁, F ₂, Jc12, Jc11, T ₁Constitute power supply three rail ground protections, F5, F6, T3 constitute the chopper phase failure protection, and F7, T4 constitute net and press overvoltage protection, F8, T5 to constitute the AC undervoltage protection.

7, chopper testing table for underground railway according to claim 1 is characterized in that: in the phase shifter circuit, the crystal oscillating circuit that the JZ quartz crystal device is formed through frequency division be I mutually with II mutually, be respectively 180 ° of frequencies mutually as high-power contrary conducting thyristor chopper of 265IZ and phase differential, predominant frequency 530HZ is synthesized in copped wave.

8, chopper testing table for underground railway according to claim 1 is characterized in that: in the adjuster circuit, F5, F6, F7 are the automatic system operational amplifier of chopper control electric propulsion work, R ₄₂, C ₁₁, R ₄₃, C ₁₂, F ₆The composition integrating circuit.F ₁, F ₂, F ₃, F ₄Be chopper control regenerative braking operational amplifier, C ₃, R ₁₀, R ₁₁, R ₂₆, C ₅, F ₃And C ₄R ₂₄, R ₂₅, R ₂₇, C ₆, F ₄Composition, differential integrator carries out proportional integral derivative control in the regenerative braking duty.

9, chopper testing table for underground railway according to claim 1 is characterized in that: the B in the contrary conducting thyristor gating circuit ₁, B ₃Pulse transformer produces and triggers broad pulse, B ₅, B ₆, B ₇, B ₈Produce to trigger burst pulse, the highpowerpulse transformer all adopts high frequency jar shape ferrite core (magnetic material) and gold film (insulating material) the winding technology that evenly distributes.