Motor power level simulation method and device

Abstract

The invention discloses a motor power level simulation method and device. The method is operated in an FPGA of a motor simulator to ensure that simulation periods can be shortened to be below 100ns, thereby improving the sampling precision of signal acquisition of to-be-tested controllers and then improving the accuracy of tracking waveforms of current. The method comprises the following steps of:judging whether an absolute value of an average value of each phase of current in all the pieces of practical three-phase current data obtained in a preset period is greater than a preset first current threshold value or not; and if the judging result is positive, stopping outputting a control signal to a motor simulator. According to the method and device, the current sizes are effectively restricted, to-be-tested controllers and motor simulators are prevented from being burnt in test verification processes, and then the personal safety of testers is ensured.

Description

technical field [0001] The present invention relates to the technical field of simulation, and more specifically, to a method and device for simulating a motor power level. Background technique [0002] The motor power stage simulation means that the motor power stage simulation model runs in the DSP (Digital Signal Processing, digital signal processing) of the motor simulator, so as to realize the test of the drive controller of the motor. In the existing motor power stage simulation, when the motor power stage simulation model runs in the DSP, the simulation cycle is longer, generally greater than 5us, resulting in low sampling accuracy when the controller under test performs signal acquisition, resulting in a relatively slow tracking waveform of the current. Poor; the motor simulator and the controller under test are connected through a three-phase line, there is strong electricity on the three-phase line, and the existing protection mechanism is poor, so it is easy to ca...

AI Technical Summary

Problems solved by technology

In the existing motor power stage simulation, when the motor power stage simulation model runs in the DSP, the simulation cycle is longer, generally greater than 5us, resulting in low sampling accuracy when the controller under test performs signal acquisition, resulting in a relatively slow tracking waveform of the current. Poor; the motor simulator and the controller under test are connected through a three-phase line, there is strong electricity on the three-phase line, and the existing protection mechanism is poor, so it is easy to cause the burnout phenomenon of the controller under test, and threaten Personal safety

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