摘要
转矩分配策略是近年来开关磁阻电机(SRM)转矩控制中比较流行的一种控制策略,旨在通过合理的分配电磁转矩,达到平稳换相、减小转矩脉动的目的。SRM的非线性特性使得固定形状的转矩分配函数(TSF)无法在整个转速范围内既能抑制脉动,也能保持高效率。文章提出了一种基于常规转矩分配策略的以转矩/安培比最大化为目标的优化方案,在允许的转矩误差范围内在线调整电机的开关角度,保证输出转矩的前提下降低绕组中通过的相电流。在Matlab/Simulink软件中分别建立了常规转矩分配方案和优化方案的直接瞬时转矩控制系统模型。比较分析仿真结果得出,优化后的转矩分配方案在保证合理分配电磁转矩的同时,提高了SRM的效率。
The torque-sharing strategy is very popular in torque control of switched reluctance motor （SRM） in recent years, which pursues smooth phase commutation and torque ripple decrease by sharing the electromagnetic torque reasonably. However, due to the non-linear characteristic of SRM, the performance with both torque ripple decrease and high efficiency is difficult to achieve in entire speed range by means of fix-curved torque-sharing function（TSF）. Therefore; based on the regular torque-sharing strategy, an optimized strategy is proposed to maximize the torque/ampere ratio. This strategy aims to reduce the phase current by adjusting switch angles on line within limits of allowable torque error to guarantee the output torque. Simulation models of direct instantaneous torque control system with regular and optimized torque-sharing strategies are built respectively based on the soft-ware Matlab/Simulink. The simulation results show that the optimized strategy improves the efficiency of SRM on the basis of reasonable torque sharing.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第12期1615-1619,共5页
Journal of Hefei University of Technology：Natural Science
基金
安徽省科技计划资助项目(10020203026)
关键词
开关磁阻电机
转矩脉动
转矩分配策略
转矩
安培比
角度优化
switched reluctance motor（SRM）
torque ripple
torque-sharing strategy
torque/ampere ratio
angle optimization
