摘要
整距绕组分块转子开关磁阻电机具有单位铜耗下输出转矩大、损耗低等优点,但转矩脉动大。本文采用余弦TSF控制法即通过控制电机各相电流产生的转矩分量使得低速时整距绕组分块转子开关磁阻电机的输出转矩脉动降低。针对电机转速升高后,由于实际相电流不能跟踪参考相电流,以及关断区间的电流不可控导致电机转矩脉动增大的问题,提出增大或减小其他相的相电流进行补偿的转矩控制策略并进行了分析。仿真和实验结果表明,该电流补偿策略的转矩分配控制法可有效抑制整距绕组分块转子开关磁阻电机的转矩脉动。
.Comparing with conventional switched reluctance motor（SRM）, SRMs with segmental rotors and fully-pitched winding have shown an increase in torque per unit copper loss of the same outside diameter and core length, and a decrease in windage losses and iron losses at high speeds greatly. However, the torque ripple is larger than that of conventional SRM. In order to suppress the torque ripple at low speed, the torque sharing function（TSF） method is utilized. The smooth torque is obtained through controlling the phase torque component produced by phase current. While for high speed operation, the phase current can not track the current reference when phase current increases rapidly and the phase current is uncontrollable because the phase is shut up. Thus to solve problem in this paper, the method of compensating phase torque by increasing or decreasing other phase＇s current is also proposed. Finally The effectiveness of the proposed strategy is verified by system simulations and experimental tests.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第1期131-138,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51207068)
国家科技支撑计划(2013BAC16B02)资助项目
关键词
整距绕组
分块转子
开关磁阻电机
转矩脉动
电流补偿
转矩分配函数
Fully-picthed winding, segmental rotor, switched reluctance motor, torque ripple, current compensation, torque sharing function
