摘要
基于永磁容错电机采用集中式绕组结构具有相间解耦、容错能力强等优点,针对H桥和星形两种驱动拓扑结构,分别提出了电机的单相开路容错控制策略.为使容错控制后的转矩满足正常需求,当采用H桥容错时,可以提高与开路相相对的相电流幅值,以补偿转矩的损失;当采用星形容错时,既要提高非故障相的电流幅值,还应改变相位,以保证输出转矩不变.对两种容错控制策略进行了推导和对比分析,并通过对相关结果进行的仿真计算验证了理论分析的正确性.
Due to their concentrated windings,permanent-magnet fault-tolerant motors inherently have the advantages of decoupling phases and fault-tolerant capability.Two fault-tolerant drive topologies for these motors,H-bridge and starconnection,are presented and compared for open-circuit fault.In order to keep the torque performance invariant during the post-fault operation,the current amplitude of healthy phases is increased in the H-bridge mode,while the current amplitude and the phase angle of healthy phases are changed in the star-connection mode.Both strategies are derived,compared and analyzed.Finally,the simulation results show the effectiveness of the theoretical analysis.
出处
《控制与决策》
EI
CSCD
北大核心
2013年第7期1007-1012,共6页
Control and Decision
基金
国家自然科学基金项目(51007031
60974142
61104082)
关键词
容错
永磁
电机
H桥
星形
驱动拓扑
fault tolerant
permanent magnet
motors
H-bridge
star-connection
drive topology
