基于FPGA的永磁同步电机谐波电流实时仿真研究

针对传统永磁同步电机(PMSM)线性集中参数模型在仿真阶段无法描述谐波电流的问题,构建基于现场可编程门阵列(FPGA)的PMSM分布参数模型。利用该模型反映齿槽转矩、气隙磁场等特点,通过搭建硬件在环(HIL)平台,进行试验验证。通过对模型公式的分析,进行离散化描述,编写Verilog语言程序并在FPGA上运行该模型,再通过与真实控制器连接,进行试验测试,验证了该模型在不同工况点下反映谐波电流的情况。结果表明:该仿真平台能够较好地反映电机谐波电流情况。

RealTime Simulation of Harmonic Current of Permanent MagnetSynchronous Motor Based on FPGA

As the traditional linear lumped parameter model of permanent magnet synchronous motor (PMSM) could not describe the harmonic current in the simulation stage, a distributed parameter model of PMSM based on fieldprogrammable gate array (FPGA) was constructed. The model reflected the characteristics of cogging torque and air gap magnetic field. The hardwareintheloop (HIL) platform was built to test the model. Through the analysis of the model formula, the model was discretized and compiled with Verilog language, and then run on FPGA. By connecting the model with a real controller, experiment was conducted to verify the response of the model to harmonic current at different operating points. The results showed that the simulation platform could better reflect the harmonic current of the motor.