摘要
最大转矩电流比(MTPA)控制是广泛应用于车用永磁同步电机(PMSM)的一种效率优化控制策略。传统MTPA控制基于静态电机参数,在精度上存在不足。在此提出一种基于动态电机参数的MTPA改进控制方法。考虑磁钢的B-H特性后,控制中用到的电机参数如交直轴电感,会随定子电流和磁钢温度动态变化。提取动态电机参数并代入到MTPA控制算法中即可得到精确的MTPA控制轨迹。最后在一套20 kW的电机及其驱动系统平台中进行实验研究,理论和实测结果误差均不超过3.3%。实验结果验证了所提方法的准确性。
Maximum torque per ampera （MTPA） control is widely used in control of automotive permanent magnet synchronous motor（PMSM） to optimize the effficiency.The traditional MTPA control is based on static motor parameter, and is lack of precision.Therefore, an improved MTPA control is proposed based on dynamic motor parameter.After considering the B-H characteristics of the magnet steel, the parameter used in control such as d-axis inductance and qaxis inductance, is changing under different stator current and magnet temperature.Precise MTPA control trajectory could be yielded by extracting dynamic motor parameters and then being substituted into the MTPA control algorithm. Finally, experiment is done in a 20 kW motor and drive system platform, theoretical and experimental results of the error is not exceed 3.3%.The experimental results verify the accuracy of the proposed method.
出处
《电力电子技术》
CSCD
北大核心
2015年第1期54-56,共3页
Power Electronics
关键词
永磁同步电机
最大转矩电流比
动态电机参数
permanent magnet synchronous motor
maximum torque per ampera
dynamic motor parameter
