基于瞬时转矩控制的开关磁阻电动机转矩脉动抑制研究  

Torque ripple minimization for switched reluctance motor based on DITC

作　　者：阮俊峰 杨明发[1] 周海鸿 Ruan Junfeng;Yang Mingfa;Zhou Haihong(College of Electrical & Automation Engineering, Fuzhou University, Fuzhou 350108)

机构地区：[1]福州大学电气工程与自动化学院,福州350108

出　　处：《电气技术》2019年第4期37-41,共5页Electrical Engineering

摘　　要：转矩脉动是开关磁阻电动机的主要缺点之一,直接瞬时转矩控制(DITC)能够有效抑制开关磁阻电动机(SRM)的转矩脉动。但电动机特殊的双凸极结构,使得电动机内部磁路十分复杂,给电磁转矩的计算带来了很大困难。为得到电动机在实际运行时转矩的精确反馈,本文通过ANSYS软件对现有样机Maxwell3D建模,收集在不同机械角度位置和单相电流时的转矩值,建立转矩模型。根据电动机的特性和实际经验,合理设置导通角,并基于电动机单相、双相交替导通的通电方式,设计了两种状态下的转矩控制器。通过仿真,证明了能够有效地将转矩脉动控制在一定误差之内,达到转矩脉动的抑制效果。Torque ripple is one of the main shortcomings of switched reluctance motors. Direct instantaneous torque control (DITC) can effectively suppress the torque ripple of switched reluctance motors (SRM). However, the special double-salient pole structure makes the internal magnetic circuit of the motor very complex, which makes the calculation of electromagnetic torque very difficult. In order to obtain the accurate feedback of the torque of the motor in actual operation, this paper calculates the torque under the different rotor position and phase current by using the ANSYS software of Maxwell3D, then torque-current inverse model is set up. According to the characteristics of the motor and practical experience, the torque controller in two states is designed based on the electrical mode of alternating conduction of the single and double phases of the motor. Through simulation, it is proved that the torque ripple can be effectively controlled within a certain error to achieve the torque ripple suppression effect.

关 键 词：开关磁阻电动机 转矩脉动抑制 直接瞬时转矩控制 转矩模型 

分 类 号：TM352[电气工程—电机]