双零序分量注入的六相载波脉宽调制技术  

Double Zero-Sequence Component Injection of the Six-Phase Carrier Pulse Width Modulation Technique

作　　者：闫岩 冯九一 宋文祥[1] YAN Yan;FENG Jiuyi;SONG Wenxiang(School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200072,China)

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《电机与控制应用》2018年第9期54-58,78,共6页Electric machines & control application

摘　　要：针对常规六相正弦脉宽调制(PWM)算法直流电压利用率低的问题,研究了一种基于双零序信号注入的六相载波脉宽调制算法。该算法通过在正弦调制波中注入一定双零序分量来提高六相逆变器的控制性能。分析了该算法双零序分量变化范围以及直流电压利用率的提升原理,给出了3种具有不同输出特性的双零序注入方法。通过对均值零序注入法进行仿真可以看出,该算法能增大直流电压利用率,改善系统运行特性,验证了该PWM算法的有效性和可行性。Aiming at the problem of low utilization of DC voltage in conventional six-phase SPWM algorithm,a six-phase carrier PWM algorithm based on double zero-sequence signal injection was studied.The algorithm improved six-phase inverter control performance by injecting a certain double zero-sequence component into a sine wave.The change range of the double zero-sequence component of the algorithm and the principle of raising the DC voltage utilization ratio were analyzed.Three double zero-sequence injection methods with different output characteristics were given.Through the simulation of the mean zero-sequence injection method,it was seen that the algorithm could increase the utilization of DC voltage,and the system operating characteristics was improved,so that the effectiveness and feasibility of the PWM algorithm were verified.

关 键 词：双零序分量注入 载波PWM 直流电压利用率 六相逆变器 

分 类 号：TM464[电气工程—电器]