开关磁阻电动机高速运行转矩控制  

Torque Control of High Speed Operation for Switched Reluctance Motor

作　　者：孙冠群[1] 薛小东 蔡慧[1] 

机构地区：[1]中国计量学院 机电工程学院,浙江杭州310018 [2]中国北车 永济新时速电机电器有限责任公司,山西永济044502

出　　处：《汽车工程学报》2013年第5期361-367,共7页Chinese Journal of Automotive Engineering

基　　金：浙江省自然科学基金项目(LQ13E070001)

摘　　要：开关磁阻电动机(Switched Reluctance Motor,SRM)在高速运行时,速度的平方值与转矩值基本成反比关系,速度越高,弱磁特性越明显,输出转矩能力受到极大限制,从而在实际中会使速度受到限制,调速范围不宽。立足于探讨高速期间的转矩控制问题,利用开关磁阻电动机各相绕组之间电流连续起来的导通控制模式,区别于典型的断续导通模式,连续导通模式关键是需要提前一定的相绕组开通角度,在低电感区迅速建立起电流来,从而增强转矩及功率输出能力。为此,在高速时控制系统增加PI调节控制环,通过查询离线表调整导通角及开通角,尤其是提前开通起始角,进而间接调节了相绕组电流及输出转矩。通过1.5 kW的四相8/6极开关磁阻电动机控制系统的仿真分析与试验验证,证明了所用方法具有一定的实际意义。or high-speed operation of a switched reluctance motor （SRM）, the square of the motor speed is inversely proportionlly to the torque basicly. The greater the motor speed, the smaller the output torque. This feature will limit the speed range of switched reluctance motors. This paper discusses the torque control problem of the SRM during high-speed operation, using the current continuous-conduction mode on each phase winding. Different fi＇om typical discontinuous conduction mode, the continuous conduction mode is the key to advance some opening angle of the phase windings to generate the current immediately in low inductance area, thereby the capacity of the torque and the power output would on improve. Simulation analysis and experimental verification for a SRM control system with 1.5 kW and four-phase 8/6 have proved that this method is provided with certain practical significance.

关 键 词：开关磁阻电动机（SRM） 高速运行 转矩控制 断续导通模式 连续导通模式 

分 类 号：TM352[电气工程—电机]