Method for judging performance of motor controller of test system

Abstract

The invention discloses a method for judging performance of a motor controller of a test system, and the test system comprises a driving motor, a controller, a water pump, a radiator, a first electricheating box, a second electric heating box and a control and data acquisition unit, wherein the driving motor and controller are devices under test; and the thermal balance judgment formula of the driving motor controller can determine that the driving motor controller can meet the requirements of the high temperature test at that time. Through a large amount of research, the method provided by the invention proposes a new motor controller thermal balance judgment formula, which is used to determine whether the motor controller meets the requirements, thereby improving the intelligence of thetest and greatly simplifying the judgment method.

Description

Technical field [0001] The invention belongs to the technical field of new energy vehicles, and specifically relates to a high temperature test system for a water pump drive motor and a controller. Background technique [0002] In the actual use of the vehicle, with the influence of many factors such as the road surface and the environment, the working conditions of the vehicle are continuously changing. The traditional cooling system water pump is driven by the engine, and its speed is limited by the engine operating conditions and cannot dynamically respond to the vehicle driving. The transient changes of time cause the waste of system capacity and increase the power consumption ratio, which is not conducive to the reliable operation of the engine. Therefore, with the continuous development of electric drive technology, water pump drive has developed from the original engine mechanical drive to electric drive. The research of highly integrated electronic water pump will be one ...

AI Technical Summary

Problems solved by technology

If the load motor and the motor under test work in the same control mode, a large impact torque will be generated on the drive shaft of the motor, and the anti-drag impact may cause damage to the motor under test, load motor, torque speed sensor, and even cause safety accidents

In addition, the load error between the load simulated by the motor and the water pump drive motor under the actual vehicle working conditions is relatively large, and the test accuracy is low.

[0004] At present, there is no timely, accurate and controllable good judgment method for the high-temperature test of the drive motor and the controller, and the present invention has also carried out research and improvement on this

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