基于虚拟电压矢量的双三相直线磁通切换永磁电机容错SVPWM策略  

Fault-tolerant SVPWM Strategy of Dual-three-phase Linear Flux-switching Permanent Magnet Motor Based on Virtual Voltage Vector

作　　者：杜怿[1] 严序康 张丽 朱孝勇[1] 毛怡 孙旭 DU Yi;YAN Xukang;ZHANG Li;ZHU Xiaoyong;MAO Yi;SUN Xu(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)

机构地区：[1]江苏大学电气信息工程学院,江苏省镇江市212013

出　　处：《中国电机工程学报》2024年第3期1153-1161,I0025,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52177045);江苏省农业科技自主创新资金项目(CX(21)3147);江苏高校优势学科建设工程(三期)资助项目(PAPD-2018-87)。

摘　　要：高可靠性是电梯驱动系统的首要指标。针对双三相直线磁通切换永磁(dual-three-phase linear flux switching permanent magnet,DTP-LFSPM)电机单相开路故障,提出一种基于虚拟电压矢量的容错空间矢量脉宽调制策略。首先,基于单相开路故障下的五维变换矩阵计算得到故障后的32个空间电压矢量分布。然后,筛选部分空间电压矢量,以z子空间电压幅值为零且每个扇区产生对称的脉宽调制波形为目标,重构得到12个虚拟电压矢量,相邻的2个虚拟电压矢量都由3个基本电压矢量组成,并用于合成参考电压矢量,不仅可以减少单相开路故障容错控制时的电流谐波,而且具有计算简单,易于硬件实现等优点。最后,搭建DTP-LFSPM电机驱动控制系统仿真与实验平台,仿真和实验测试结果证明所提容错策略的正确性和有效性。High reliability is the primary indicator of elevator drive systems.Focusing on the single-phase open-circuit fault of a dual-three-phase linear flux-switching permanent magnet(DTP-LFSPM) motor,fault-tolerant space vector pulse width modulation(SVPWM) strategy based on virtual voltage vector is proposed.First,the distribution of 32space voltage vectors after the fault is obtained by calculating the five-dimensional transformation matrix under the single-phase fault.Second,in order to achieve the zero voltage amplitude in z subspace and the symmetrical pulse width modulation waveform in each sector,twelve virtual voltage vectors are reconstructed by selecting a part of the space voltage vectors.Each two adjacent virtual voltage vectors are composed of three basic voltage vectors and are used to synthesize reference voltage vectors.The current harmonics under single-phase open-circuit fault-tolerant control can be reduced by the proposed method and the calculation process is simple and easy to implement in hardware.Finally,the simulation and experiment platforms of DTP-LFSPM motor are built.The simulation and experiment results verify the correctness and validity of the proposed fault-tolerant strategy.

关 键 词：双三相 直线电机 空间矢量脉宽调制 虚拟电压矢量 容错 

分 类 号：TM351[电气工程—电机]