基于磁共能的开关磁阻电机转矩在线快速估算

Online Rapid Estimation of SRM Torque Based on Magnetic Common-Energy

为避免复杂的数学运算及降低处理器数据存储空间要求,在电压斩波控制的基础上,提出了一种基于磁共能的开关磁阻电机(SRM)转矩在线快速估算策略。详细阐述了磁链特性测量方法,给出了磁共能与转矩的计算公式。仿真和试验结果表明,瞬时转矩的在线快速估算值与实际测量值误差较小,说明磁共能方法适于转矩的在线快速估算。

In order to avoid the complex mathematical operation and reduce the requirement of processor data storage space, a strategy for online fast estimation of switched reluctance motor (SRM) torque with magnetic common-energy was proposed based on voltage chopper control. The measurement method of magnetic flux characteristics was described in detail, and the calculation formula of magnetic common energy and torque was given. The simulation and experimental results showed that the error of the instantaneous torque was small, proving that this method was suitable for the online estimation of torque.