开关磁阻电机共上管功率变换器的宽转速安全退磁控制策略  

Safe Demagnetization Control Strategy for Switched Reluctance Motor with Common Upper Switch Power Converter During Wide Speed Range

作　　者：陈辉 张旸明 蒋冬青[1] 管旻珺 刘闯[1] Chen Hui;Zhang Yangming;Jiang Dongqing;Guan Minjun;Liu Chuang(College of Automation Nanjing University of Aeronautics and Astronautics, Nanjing 211106 China)

机构地区：[1]南京航空航天大学自动化学院

出　　处：《电工技术学报》2019年第19期3979-3988,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金（51877108）;国家自然科学基金青年科学基金（51807090）;江苏省自然科学基金青年科学基金（BK20180428）资助项目

摘　　要：开关磁阻电机(SRM)用共上管功率变换器可以有效地减少功率开关器件的数量,降低系统成本,同时也具备传统不对称半桥变换器相间独立、励磁快等优点,但是公共上管的存在将出现各相退磁困难的问题。该文以 2(n+1)共上管功率变换器下四相 8/6 结构 SRM 为研究对象,研究电流斩波控制和角度位置控制时安全退磁的角度优化控制策略,理论推导共上管功率变换器临界退磁换相时的导通宽度,确保系统在宽转速范围内高效可靠的运行;并通过仿真分析及实验结果验证了共上管变换器的SRM 在电流斩波控制(CCC)和角度位置控制(APC)模式下安全退磁的控制参数的合理性。The common upper switch power converter for even phase switched reluctance motor can effectively reduce the number of power switch devices and the cost of system. It also inherits the advantages of the asymmetrical bridge converter, such as phase independence and fast excitation. However, the existence of common upper switch makes it difficult for each phase to demagnetization. In this paper, based on the common upper switch power converter of four phase 8/6 switched reluctance motor, the angle control optimal strategy of safe demagnetization for current chop control and angle position control is studied. The theory derives the critical commutation width while current chop control and angle position control, in order to operate the system efficiently and reliably in a wide speed range. Simulation and experiment results confirm the validity of the control strategy.

关 键 词：共上管功率变换器 多相开关磁阻电机 安全退磁 角度优化控制 

分 类 号：TM352[电气工程—电机]