五相混合式永磁电机容错控制策略研究

发布时间：2018-05-24 18:41

本文选题：五相混合式永磁电机 + 开路故障　；参考：《浙江大学》2017年硕士论文

【摘要】：多相永磁同步电机具有高功率密度、高功率因数、高可靠性及其良好的容错性能。特别是随着微电子和现代电力电子技术的发展,在对电机驱动系统具有高可靠性要求的应用领域,容错技术得到广泛的应用。因为传统结构的永磁电机具有很大的短路电流,容错技术的应用受到了限制,所以能够抑制短路电流的永磁容错电机,成为了研究的热点。五相混合式永磁电机通常也称为五相永磁电机,它具有良好的性能和较小的短路电流,因此本文以五相(混合式)永磁电机为研究对象,研究了电机在一相开路、相邻两相开路、不相邻两相开路、一相短路、相邻两相短路和不相邻两相短路六种情况下的容错策略,建立matlab/simlink仿真模型,验证了容错策略的正确性。本文的主要工作及其贡献主要体现在以下几个方面:1、总结多相电机开路和短路容错策略研究的现状,介绍五相混合式电机结构特点,分析了它的短路电流,说明五相混合式电机具有容错运行天然优势,为五相电机容错策略的研究打下良好基础。2、利用解析法研究了电机绕组开路和短路故障时的电流容错策略,并导出了基于铜耗最小原则时的容错电流数学表达式。3、从公式[ua ub uc ud ue]T Tαβ=[ub' uc' ud' ue']T Tαβ' 出发,研究了五相电机短路故障下的电压容错策略。4、建立五相永磁电机在matlab/simlink下的仿真模型,验证了本文研究的开路、短路故障容错策略的正确性。
[Abstract]:Multiphase permanent magnet synchronous motor has high power density, high power factor, high reliability and good fault-tolerant performance. Especially with the development of microelectronics and modern power electronics technology, fault tolerant technology has been widely used in the field of high reliability of motor drive system. Because the traditional permanent magnet motor has a very large short-circuit current, the application of fault-tolerant technology is limited, so the permanent magnet fault-tolerant motor which can suppress the short-circuit current has become a hot research topic. Five-phase hybrid permanent magnet motor is also known as five-phase permanent magnet motor. It has good performance and small short-circuit current. Therefore, this paper takes the five-phase (hybrid) permanent magnet motor as the research object, and studies the open circuit of the motor in one phase. The fault-tolerant strategies of two adjacent phases open circuit, non-adjacent two phase open circuit, one phase short circuit, adjacent two phase short circuit and non-adjacent two phase short circuit are established, and the matlab/simlink simulation model is established to verify the correctness of the fault-tolerant strategy. The main work and contribution of this paper are as follows: 1. This paper summarizes the research status of open circuit and short circuit fault-tolerant strategy of multiphase motor, introduces the structural characteristics of five-phase hybrid motor, and analyzes its short-circuit current. It shows that the five-phase hybrid motor has the natural advantage of fault-tolerant operation, which lays a good foundation for the study of fault-tolerant strategy of five-phase motor. The current fault-tolerant strategy of the motor winding with open-circuit and short-circuit faults is studied by analytic method. Based on the principle of minimum copper consumption, the mathematical expression of fault-tolerant current is derived. Based on the formula [ua ub uc ud ue] T 伪尾 = [ub`uc' ud' ue'] T 伪尾', the voltage fault tolerance strategy .4 of five-phase motor under short-circuit fault is studied, and the simulation model of five-phase permanent magnet motor under matlab/simlink is established, which is based on the formula [ua ub uc ud ue] T 伪尾 = [ubuc' ud'ue'] T 伪尾'. The correctness of the open circuit and short-circuit fault tolerant strategy studied in this paper is verified.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM351

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