A kind of test stand system of electric automobile driving motor
The present invention relates to a kind of test stand system of electric automobile driving motor.
Drive motor system on the electric automobile is the core of whole electric automobile, and its key property and control effect have directly influenced the performance index of car load.Therefore; One cover drive motor test macro well has very important significance to the development and application of motor and controller thereof; The test macro that one cover is good not only can help development and application man analysis product some phenomena of the failure in debugging and application process; And can find the problem of product rapidly and solve, also can make accurately and fast and estimating, thereby improve the speed and the application efficiency of product development performance of products.Consider the diversity of present car load development platform; The voltage of electric system and power grade are not unique; Exploitation one cover is fit to the test platform of multiple voltage and power grade like this, and can avoid voltage and power grade to change the whole stand in back needs the problem of exploitation again.And present electromechanical testing stand, often tested object is single electric pressure, can not take into account energy-conservation and different electric pressures, in case tested object changes, needs to change power-measuring system.
In sum, have following technical matters in the prior art: existing power-measuring system can't adapt to by the variation of measured motor, often needs exploitation again.
Summary of the invention
The object of the present invention is to provide a kind of driving motor for electric automobile multifunctional testing stand; Can take into account characteristics energy-conservation and that test different electric pressure objects; When tested object changes, need not change power-measuring system, can carry out power assembly of electric automobile hardware in ring test simultaneously.
Driving motor for electric automobile testboard bay of the present invention, the performance test, Electric Machine Control software debugging, power assembly of electric automobile hardware that can accomplish the drive motor system are in ring test.High, suitable multiple voltage of this platform system measuring accuracy and power grade, system effectiveness height.When tested electric system was done electric operation, dynamometer system operated in power generation mode, and the electricity that sends feeds back to AC network; When tested electric system is done generator operation, drag tested motor rotation by dynamometer machine, the electricity that is sent by measured motor feeds back to AC network; Can be inconsistent by the electric pressure of measured motor and dynamometer machine, tested electric system can have than wide range of voltages; Platform system is exchanging the end feedback grid, and system effectiveness is high.The hardware that motor driven systems carries out the car load power assembly with electrokinetic cell, entire car controller is in ring test.Key is, dynamometer machine and supplied power respectively by two cover power supplys by measured motor; The stand motor is exchanging the end feedback grid; Between power-measuring system and the tested electric system speed reduction unit has been installed;
Concrete technical scheme is following:
A kind of test stand system of electric automobile driving motor comprises dynamometer system and tested electric system, between said dynamometer system and tested electric system, speed reduction unit is installed, and it is used for regulating tested rotating speed of motor in the tested electric system.
The AC network that also comprises power supply, said test stand system is exchanging the end feedback grid.
Do electric operation when tested electric system, dynamometer system operates in power generation mode, and its electricity that sends feeds back to AC network.
Do generator operation when tested electric system, the dynamometer machine in the dynamometer system drags tested motor rotation, and the electricity that is sent by measured motor feeds back to AC network.
Being supplied power respectively by two cover power supplys in dynamometer machine in the dynamometer system and the tested electric system by measured motor.
AC network is supplied power to system through intrasystem power supply.
Tested electric system comprises a tested electric machine controller, and dynamometer system comprises a Dynamometer Control device.
Do generator operation when tested electric system, the dynamometer machine in the dynamometer system drags tested motor rotation, and the electricity that is sent by measured motor feeds back to AC network; Current direction is followed successively by: AC network, and power supply, the measured motor controller, by measured motor, speed reduction unit, dynamometer machine, Dynamometer Control device, AC network.
Do generator operation when tested electric system, the dynamometer machine in the dynamometer system drags tested motor rotation, and the electricity that is sent by measured motor feeds back to AC network; Current direction is followed successively by: AC network, Dynamometer Control device, dynamometer machine; Speed reduction unit, by measured motor, the measured motor controller; Power supply, AC network.
Speed reduction unit and be provided with the torque/speed sensor between the measured motor.
System also comprises a water-cooling system.
Compare with present prior art, the present invention can be had than wide range of voltages by measured motor exchanging the end feedback grid, and platform system efficient is high, can carry out power assembly of electric automobile hardware in ring test.
Description of drawings
Fig. 1 is a drive motor test macro one-piece construction
Fig. 2 is an engine bench test system schema schematic diagram
Describe the present invention according to accompanying drawing below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
As shown in Figure 1, be the Motor Measuring System one-piece construction among the present invention, whole test system is divided into three main portions:
Stand part 1 mainly comprises: by measured motor (and control system) 11, and electric machine controller (11 '), torque/speed sensor 12, dynamometer machine (and control system) 13, Dynamometer Control device (13 '), water-cooling system 14, speed reduction unit 15, power supply 16 etc.;
Measurement of power part 2 mainly comprises: power analyzer 21, the signal conditioning circuit 22,23 of acquired signal etc.;
Control section 3 mainly comprises: control computer 31, data acquisition and control card 32,33,34 etc.;
Other parts mainly comprise: chilled water circulation 37, controller signals 38, other signals 39 of motor, three-phase current signal 40, other signals 41 of controller.
In addition, connect main member:
CAN------Controller Area Networt controller local area network
d------DC bus-bar voltage
d------dc bus current
c------exchanges three-phase current
Tem------motor temperature sensor signal
HALL------motor position sensor signal
The 36--------CAN bus.
Shown in Figure 2ly be the test principle figure among the present invention.
When carrying out motor driven systems or motor-driven software debugging, be divided into two kinds of situation:
A, when tested electric system is operated in motoring condition, the direction of energy Flow is: AC network 35 (ACPower Supply) → power supply 16 → tested electric machine controller 11 ' → by measured motor 11 → torque/speed sensor 12 → speed reduction unit 15 → dynamometer machine 13 → Dynamometer Control device 13 ' → AC network 35.
B, when tested electric system is operated in generating state, the direction of energy Flow is: AC network 35 → Dynamometer Control device 13 ' → dynamometer machine 13 → speed reduction unit 15 → torque/speed sensor 12 → by measured motor 11 → tested electric machine controller 11 ' → power supply 16 → AC network 35.
Comprise shaft coupling 42 in addition, rotating speed/position transducer 43.
In the middle of system under test (SUT) and dynamometer system; Increased speed reduction unit, significant feature is: after having added speed reduction unit, and can be with the dynamometer machine of high rotating speed high pulling torque; Become the motor that adopts low rotation speed large torque; With respect to the motor of original high rotating speed high pulling torque, the motor of low-speed big is selected easily, and the cost performance of motor is high.Whole platform system is exchanging the end feedback grid, and the voltage range of system under test (SUT) can be very wide, can test the tested motor driven systems of different voltages and power grade, need not change and change other equipment.
When carrying out power assembly of electric automobile hardware in ring test, electrokinetic cell on the electric automobile and entire car controller to be connected with power drive system, the dynamometer machine simulation provides the car load load, can carry out the emulation of the simulation test and the integrated vehicle control tactics of car load operating mode.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; Or directly apply to other occasion without improvement, all within protection scope of the present invention.