Fault-tolerant SVPWM Strategy of Dual-three-phase Linear Flux-switching Permanent Magnet Motor Based on Virtual Voltage Vector
杜怿 1严序康 1张丽 1朱孝勇 1毛怡 1孙旭1
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. 江苏大学电气信息工程学院,江苏省 镇江市 212013
折叠
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.
Abstract
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 32 space 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
Key words
dual-three-phase/linear motor/space vector pulse width modulation(SVPWM)/virtual voltage vector/fault-tolerant
引用本文复制引用
基金项目
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(CX213147)
江苏高校优势学科建设工程(三期)资助项目(PAPD-2018-87)
Jiangsu Agriculture Science and Technique Innovation Fund(CX213147)
维普
万方数据