【摘要】 针对一般永磁同步发电机的直接转矩控制存在转矩波动较大的问题,提出一种基于预测空间电压矢量脉宽调制(SVPWM)的直接转矩控制策略该策略利用转矩、磁链预测算法算出下一周期需要补偿的电压矢量,再利用SVPWM合成该电压矢量,从而减小转矩波动。通过仿真研究的分析结果表明,该方法在保持系统快速动态响应的同时,有效地减少了转矩的脉动,明显地改善了系统的控制性能。更多还原

【Abstract】 To solve the problems of large flux and torque ripples in direct torque control for permanent magnet synchronous generator,a predictive space voltage vector pulse width modulation( SVPWM) control strategy based on direct torque was proposed,calculate the compensator voltage vector of the next cycle through the torque and flux prediction algorithm,using SVPWM to synthetize the voltage vector,in order to reduce the torque ripple. The simulation results showed that the method kept a fast dynamic response of the system,effectively reduced the torque ripple,and obviously improved the control performance of the system.更多还原