基于改进型磁链观测器的TSMC-PMSM无速度传感器矢量控制系统研究

Research on Speed-Free Sensor Vector Control System for TSMC-PMSM Based on Improved Flux Observer

针对TSMC和PMSM各自独特的优点,设计了基于改进型磁链观测器的TSMC-PMSM无速度传感器矢量控制系统。整流级和逆变级分别采用无零矢量调制和电压空间矢量调制策略。采用反电动势积分法,通过带饱和反馈环节的磁链观测器和锁相环结构的转子位置和速度观测器,实现了位置和转速的估算,分析了各部分工作原理,给出了系统控制框图,并搭建了一台试验样机对方案进行实验验证。结果表明,文中方案的采用可确保系统在中高速场合具有良好传动性能和更优异的网侧性能。

Aiming at their unique advantages of TSMC and PMSM, speed-free sensor vector control sys- tem for TSMC-PMSM is designed based on improved flux observer. Space vector without zero vector mod- ulation was employed in rectifier stage while voltage space vector modulation was used in inverter stage. A back-EMF integration combined with the saturation feedback flux observer and phase-locked loop with symbol recognition was used for estimating rotor flux and speed. The principle was analyzed and the dia- gram of system control is given. The control method is verified by the experimental prototype. The experi- mental results show that the method adopted in this system can not only own good driving-performance, but also have excellent network-performance in high-speed.