Abstract: To enhance the safety and efficiency of new energy vehicle motor control unit (MCU) testing and meet the high-fidelity requirements for motor operational characteristics in hardware-inthe-loop (HIL) testing, this paper proposes and constructs an MCU HIL test system based on highprecision permanent magnet synchronous motor (PMSM) simulation. The system incorporates actual motor parameter identification results into its modeling, significantly improving the accuracy of motor behavior simulation. Validation on the HIL platform demonstrates that the system simulation step size can be stably controlled within 1 μs, meeting design specifications. Multiple comparative test analyses indicate that both rotational speed simulation and torque dynamic response errors are less than 5%. Experimental results confirm that this test system exhibits high reliability and accuracy, effectively supporting the verification and evaluation of various motor controller functions.

Key words: new energy vehicles; permanent magnet synchronous motor; FPGA; HIL

摘要： 为提升新能源汽车电机控制器（MCU）测试的安全性与效率，满足硬件在环（HIL） 测试中对电机运行特性的高保真度要求，文章提出并构建了一种基于高精度永磁同步电机 （PMSM）仿真的 MCU HIL 测试系统。系统建模中融入了实际电机参数辨识结果，显著提升 了电机行为模拟精度。HIL 平台验证表明，系统仿真步长可稳定控制在 1 μs 以内，符合设计 指标。多组对比测试分析显示，转速模拟与扭矩动态响应误差均小于 5%。实验结果表明，该 测试系统具有较高的可靠性与准确性，能够有效支持电机控制器各项功能的验证与评估。

关键词: 新能源汽车；永磁同步电机；FPGA；HIL