五相永磁容错型游标电机弱磁特性研究

发布时间：2018-01-11 16:42

本文关键词：五相永磁容错型游标电机弱磁特性研究　出处：《电工技术学报》2017年19期 　论文类型：期刊论文

【摘要】：永磁容错型游标(FTPMV)电机结合了永磁游标电机高转矩密度和永磁容错电机高可靠性的优点,因此成为专家学者研究的热点之一。为了研究此类电机在低速区和高速区的运行性能,对比分析了两种五相电机的结构特性、磁场调制机理和电感特性,并推导了五相电机弱磁情况下的数学模型。其次,基于电压空间矢量脉宽调制(SVPWM)控制方法,建立电机驱动系统。在低速区,采用直轴电流为零的控制策略;在高速区,采用一种基于母线电压和反电动势差值判断弱磁时刻的方法重点研究了电机的弱磁特性。参数计算和仿真结果表明,电机工作在额定电流的情况下,相比传统FTPMV电机,新型FTPMV电机有更好的弱磁能力。最后,通过样机的实验数据验证了理论分析的正确性。
[Abstract]:Permanent magnet fault-tolerant Vernier (FTPMV) motor combines the advantages of high torque density of permanent magnet Vernier motor and high reliability of permanent magnet fault-tolerant motor. In order to study the performance of this kind of motor in the low speed region and the high speed region, the structure characteristics, magnetic field modulation mechanism and inductance characteristics of the two kinds of five phase motors are compared and analyzed. The mathematical model of the five-phase motor with weak magnetic field is derived. Secondly, based on the voltage space vector pulse width modulation (SVPWM) control method, the motor drive system is established in the low speed region. The control strategy of zero straight axis current is adopted. In the high speed region, a method based on the bus voltage and the differential value of the back EMF is used to judge the weak magnetic moment of the motor. The parameter calculation and the simulation results show that the motor works under the condition of rated current. Compared with the traditional FTPMV motor, the new FTPMV motor has better magnetic weakening capability. Finally, the correctness of the theoretical analysis is verified by the experimental data of the prototype.
【作者单位】：江苏大学电气信息工程学院;江苏省电动车辆驱动与智能控制重点实验室;
【基金】：国家自然科学基金项目(51422702,51577084) 江苏省“333工程”科研项目(BRA2015302) 江苏省高校自然科学研究重大项目(15KJA470002) 江苏省优势学科资助
【分类号】：TM351
【正文快照】： 0引言随着能源危机的不断加剧和环境污染的日趋严重,新能源技术[1]的发展日新月异,引起了全世界范围内的高度重视。一直以来,电机都是能量转换的重要环节,永磁同步电机高效率、高功率密度、高转矩密度、高可靠性的特点使其在电动汽车[2]、风力发电[3]、船舶推进[4]和潮汐能发

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