Ultra-low voltage three phase AC induction machine test method and device

Abstract

The present invention provides a method for testing parameter of super-low voltage three-phase alternating-current induction motor and a device thereof. A DC-AC inversing system is adopted for driving the electric motor. An ECU controller adopts a VVVF control algorithm and realizes the speed modulation to the motor with a mode of constant pressure-frequency ratio. A data processing module executes storing and display procession to the motor-end voltage and phase current obtained through real-time sampling. The input power of motor is calculated through FFT. An accumulator provides a power source. The parameter measuring is executed through executing experiments of empty loading, rotation-clogging, voltage-frequency characteristic, etc. to the three-phase alternating-current induction motor. The invention also provides a method for measuring the motor parameter, testing the electric property and identifying the quality of magnetic material. The device according to the invention comprises a hardware platform which is composed of a DC-AC inverter, an inversion driver, an ECU controller, a measuring module, a data processing module and a touch screen. The device according to the invention has the advantages of simple structure and reliable performance.

Description

technical field [0001] The invention relates to a testing method and device for motor parameters, in particular to a digital ultra-low voltage three-phase AC induction motor parameter testing method and device. Background technique [0002] Due to the simple structure, no winding on the rotor, the induction motor has low maintenance cost and long service life; therefore, it is used in many occasions, almost used in daily life, factory equipment, ports, oilfields, coal mines and other fields. With the continuous development of hybrid electric vehicles, the application of induction motors in automobiles has become a trend and has been gradually promoted. The main ones that should be used on vehicles are high-current ultra-low voltage three-phase AC induction motors (voltage lower than 8V, current up to about 150A). However, the application of automotive grade puts forward higher requirements for the induction motor itself and its drive. , There is a huge gap in the design, ma...

AI Technical Summary

Problems solved by technology

The main ones that should be used on vehicles are high-current ultra-low voltage three-phase AC induction motors (voltage lower than 8V, current up to about 150A). However, the application of automotive grade puts forward higher requirements for the induction motor itself and its drive. , there is a huge gap in the design, manufacture and testing of high-current ultra-low voltage three-phase AC induction motors for vehicles in China, and there is no mature parameter and performance testing equipment

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