全速度范围的高速永磁同步电机无感矢量控制算法优化

Optimization of Non-inductive Vector Control Algorithm for High Speed Permanent Magnet Synchronous Motors in Full Speed Range

为改善高速永磁同步电机(PMSM)的驱动控制性能,由于高速PMSM的转子很难安装编码器,而且编码器也无法满足过高转速的要求,因此常采用软件算法对电机转速进行估算。但是,在电机启动及低速时,转速估算方法无法准确估算电机转速及位置,针对该问题本文采用转速开环与转速闭环控制相结合的方法,并对两者的切换过程进行优化,减小切换时的电流冲击。

In order to improve the drive control performance of high-speed permanent magnet synchronous motor(PMSM),it is difficult to install the encoder for the rotor of high-speed PMSM,and the encoder can not meet the requirements of excessive speed.Therefore,the software algorithm is often used to estimate the motor speed.However,when the motor starts and the low speed,the speed estimation method can not accurately estimate the motor speed and position.For this problem,this paper combines the method of speed open loop and speed closed loop control,and optimizes the switching process of the two to reduce the switching.Current impact when.