摘要
对于传统的感应电动机直接转矩控制方案中磁链和转矩脉动大,开关频率不恒定等问题,提出一种改进的直接转矩控制方案。首先,引入PI调节器代替滞环比较器,引入SVPWM代替开关表,引入全阶磁链观测器代替纯积分器。提出一种PI调节器参数整定的方法和全阶磁链观测器极点配置的简化方案。最后通过MATLAB仿真结果验证了该方法的正确性。
Aiming at the problems of high torque and flux pulsation and variable switching frequency in the traditional direct torque control scheme, an improved direct torque control scheme was presented. This scheme was studied to adopt SVPWM and PI controller to replace switch table and hysteresis comparator. The full-order flux observer is presented to replace the pure integrator. This paper presents a method to adjust the parameter of PI regulator and a simplified scheme of pole configuration of full-order flux observer. Simulation and experiment results of MATLAB show that the module is correct.
出处
《机电工程技术》
2017年第11期85-90,共6页
Mechanical & Electrical Engineering Technology
