Testing apparatus and method for electric drive system of electric automobile

Abstract

The invention discloses a testing apparatus and method for an electric drive system of an electric automobile. The testing apparatus comprises a rectifier power supply, a torque and rotation speed sensor, a measuring and control unit, a tested electric drive system and an accompanying electric drive system, and a simulated condition module; the tested electric drive system and the accompanying electric drive system comprise a motor controller and an automotive motor, an AC (alternating current) power supply end of the tested (accompanying) motor controller is connected with a three-phase AC power supply end of the tested (accompanying) automotive motor; an output shaft of the tested (accompanying)automotive motor is connected with the torque and rotation speed sensor, and the torque and rotation speed sensor is connected with the measuring and control unit; a DC (direct current) power supply end of the tested (accompanying) motor controller is connected with a DC power supply output end of the rectifier power supply in parallel through a DC bus; the rectifier power supply, the tested (accompanying) motor controller and the tested (accompanying) automotive motor are respectively connected with the measuring and control unit; DC voltage and current sensors and AC voltage and current sensors are connected with the measuring and control unit; and the simulated condition module is connected with the measuring and control unit. The testing apparatus provided by the invention has complete conditions, low facility cost and high efficiency.

Description

technical field [0001] The invention relates to a test experiment device and a method thereof for an electrical system, in particular to a test experiment device and a method applied to an electric drive system of an electric vehicle. Background technique [0002] In order to solve the global energy and environmental crisis, countries all over the world are developing energy-saving and environmentally friendly means of transportation, namely electric vehicles. At present, the electric vehicle electric drive system of the electric vehicle developer needs to be tested on a special bench, and the test method for the electric vehicle electric drive system is still in the stage of research and development and improvement, and there is no corresponding mature product. [0003] Such as figure 1 As shown, a prior art electric vehicle electric drive system test device consists of a rectifier power supply 1, a motor controller 21, an on-board motor 22, a torque speed sensor 4, an edd...

AI Technical Summary

Problems solved by technology

[0005] 1. The test method of the electric drive system of electric vehicles in the prior art has high energy consumption because energy is consumed in the form of heat in the water cooling system

[0006] 2. The test method for the electric drive system of electric vehicles in the prior art has low test efficiency, and only one set of electric drive system can be tested at the same time

[0007] 3. The test working conditions are incomplete, only the electric working conditions can be tested, and the braking working conditions cannot be tested

[0008] 4. The investment cost of equipment is high, and it is necessary to configure a rectifier power supply and an eddy current dynamometer that match the power of the electric drive system

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