单相开路故障下五相直流无刷电机无位置传感器控制

发布时间：2018-01-25 00:26

本文关键词： 复系数滤波器容错电机解耦模型单相开路故障无位置传感器直流电机故障分析　出处：《电力自动化设备》2017年11期 　论文类型：期刊论文

【摘要】：为了增强五相电机驱动系统的可靠性和容错能力,对五相永磁无刷直流电机在单相开路故障下的无位置传感器控制技术进行了研究。引入一种新颖的五相电机开路模型,实现了在单相开路故障下的场定向控制及载波脉宽调制。并在此基础上,采用滑模观测器估算五相电机的基波反电动势。然而当五相电机开路在故障模式下运行时,三次谐波绕组及逆变器非线性等因素引起观测反电动势含有较强的抖震谐波。采用了一种改进型复系数滤波器,并取代了传统一阶低通滤波器,对观测反电动势基波分量进行无失真滤波,改善位置观测精度和无位置控制电机动态性能。在实验平台上实现了单相开路模式下的无位置控制技术,验证了其的有效性。
[Abstract]:In order to enhance the reliability and fault tolerance of the five-phase motor drive system. The position sensorless control technology of five-phase permanent magnet brushless DC motor under single-phase open-circuit fault is studied. A novel open-circuit model of five-phase permanent magnet brushless DC motor is introduced. The field orientation control and carrier pulse width modulation under single-phase open-circuit fault are realized. A sliding mode observer is used to estimate the fundamental backEMF of a five-phase motor. However, when the five-phase motor is open circuit operation in fault mode. The third harmonic winding and inverter nonlinearity cause the observation back EMF to contain strong shaking harmonics. An improved complex coefficient filter is adopted and the traditional first order low pass filter is replaced. The fundamental wave component of the observed backEMF is filtered without distortion to improve the accuracy of the position observation and the dynamic performance of the position-free motor. The position free control technology is realized on the experimental platform in single-phase open circuit mode. The validity of the method is verified.
【作者单位】：哈尔滨工业大学电气工程及自动化学院;
【基金】：国家自然科学基金资助项目(51507039) 中央高校基本科研业务费专项资金资助项目(HIT.NSRIF.2017013) 中国博士后科学基金资助项目(2016M591529)~~
【分类号】：TM33
【正文快照】： 0引言五相永磁同步电机的突出优点之一是容错运行,开路故障下,其可维持剩余相的相电流形成圆形磁势旋转即可保证五相电机无扰运行。通常当三相交流电机发生开路故障时,需构造三相四开关容错拓扑;而五相电机由于有较多的相自由度,实现容错控制非常方便,控制剩余相的相电流即

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