PMSM空调压缩机启动控制方法  

Start-up Control Method of PMSM Air-conditioner Compressor

作　　者：向柏澄 李胜 徐政 李光明 XIANG Baicheng;LI Sheng;XU Zheng;LI Guangming(National Key Laboratory of Power Systems in Shenzhen,Tsinghua Shenzhen International Graduate School,Shenzhen 518055,Guangdong,China;Qingdao Bantek Inverter Technology Co.,Ltd.,Qingdao 266510,Shandong,China)

机构地区：[1]清华大学深圳国际研究生院电力系统国家重点实验室深圳研究室,广东深圳518055 [2]青岛斑科变频技术有限公司,山东青岛266510

出　　处：《电气传动》2022年第10期10-14,36,共6页Electric Drive

摘　　要：针对不同工况导致PMSM空调压缩机启动过程不稳定的问题,结合轴误差速度闭环控制的特点,提出一套转子位置识别→I/f开环启动→误差角反馈闭环切换的三段式启动应用方案。通过三次分相注入和两次定向注入,精准检测转子初始位置,确定最佳起始相位角;采用具有转矩-功角自平衡特性的电流闭环I/f启动策略,确保压缩机成功启动;通过误差角反馈,调节定子电流,减小轴系偏差,实现向电流与速度双闭环控制的平顺切换。通过仿真和实验,验证了PMSM空调压缩机在不同负载工况下的良好启动特性,并在小型中央空调系统中得到应用。Regarding the problem of instability in the start-up process of permanent magnet synchronous motor(PMSM)air-conditioner compressor caused by different operating conditions,and combined with the characteristics of shaft error speed closed-loop control,a set of three-stage start-up application program pertinent to rotor position recognition→I/f open-loop startup→error angle feedback closed-loop switching was proposed.Through three individual phase and two directional injections,the initial position of the rotor was accurately detected to determine the best initial phase angle.The current closed-loop I/f starting strategy with torque-angle self-balancing characteristics was adopted to ensure the successful start-up of the compressor.Through the error angle feedback,the stator current was adjusted to reduce the shaft deviation,and the smooth switching to the double closed-loop control of current and speed could be realized.Based on the simulations and experiments,the good start-up characteristic of PMSM air conditioner compressor under different load conditions were verified,which has been applied in small central air conditioner systems successfully.

关 键 词：永磁同步电动机 空调压缩机 无位置传感器矢量控制 I/f启动控制 轴误差 

分 类 号：TM464[电气工程—电器]