基于输出电压动态调节的PMSM最大转矩无差拍控制

Permanent Magnet Synchronous Motor Maximum Torque Deadbeat Control Method Based on Dynamic Adjustment of Output Voltage

针对传统高速永磁同步电机(PMSM)无差拍控制中高速段存在的转矩、磁链失控问题,提出一种PMSM电压限制下的无差拍转矩控制方法(voltage limited deadbeat torque control,VL-DBTC)。在建立分析PMSM无差拍调节器非线性转矩、磁链调节原理的基础上,阐明了高速段逆变器输出电压限制与PMSM转矩输出之间的本质关系。在此基础上,通过细分PMSM无差拍转矩跟踪项为最大转矩输出和精确转矩跟踪以满足全速段系统要求。最后,搭建了110 kW高速永磁同步电机对拖实验平台,验证了VL-DBTC方法在母线电压限制下的最大转矩输出性能的优越性。

When the traditional deadbeat torque contro（l DBTC）is applied to the permanent magnet synchronous motor（PMSM）,the torque and flux will run out of control range in the high speed. Presented a voltage limited deadbeat torque control（VL-DBTC）for PMSM to resolve this problem. First,analyzed the PMSM deadbeat controller-linear torque and flux adjustment principle. Then clarified the nature of relationship between inverter output voltage limit and PMSM output torque. On this basis,segmented PMSM deadbeat torque maximum torque output trocking and precise torque tracking in order to meet the full system requirements. Finally,built 110 kW drag of high speed permanent magnet synchronous motor experiment platform,verified VL-DBTC in bus voltage limits the maximum torque output performance advantages.