基于遗传算法和转矩分配函数的开关磁阻电机转矩脉动抑制
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摘要
开关磁阻电机(SRM)特殊的双凸极结构导致其运行时会产生很强的转矩脉动。传统的转矩分配函数(TSF)控制方法虽然可以在一定程度上起到抑制转矩脉动的作用,但是受到开关频率、功率电源电压值等物理条件的限制,仍会存在较大的转矩脉动。为此,提出了一种基于遗传算法的SRM TSF控制方案。利用遗传算法良好的寻优能力,在指数型TSF控制的基础上,将转矩脉动作为优化目标来寻取最优的开关角。将1台四相8/6极的SRM作为研究对象,搭建了以TMS320F28335为控制核心的试验平台。试验结果验证了基于遗传算法的TSF控制方法可以有效减小SRM的转矩脉动。
Torque ripple of switched reluctance motor (SRM) was inevitable due to its special doubly salient motor structure. Although the conventional torque sharing function (TSF) control method of SRM could largely suppress the torque ripple,the torque ripple suppression was still limited by the physical conditions such as the switching frequency and the power supply voltage. A TSF control method was proposed based on genetic algorithm. The torque ripple was used as the optimization target to find the optimal switching angle using the optimization ability of the genetic algorithm. The experimental system based on genetic algorithm using TMS320F28335 was established. The experimental results on designed controller for a 8/6 prototype SRM validated the effectiveness of torque ripple minimization.
Torque ripple of switched reluctance motor (SRM) was inevitable due to its special doubly salient motor structure. Although the conventional torque sharing function (TSF) control method of SRM could largely suppress the torque ripple,the torque ripple suppression was still limited by the physical conditions such as the switching frequency and the power supply voltage. A TSF control method was proposed based on genetic algorithm. The torque ripple was used as the optimization target to find the optimal switching angle using the optimization ability of the genetic algorithm. The experimental system based on genetic algorithm using TMS320F28335 was established. The experimental results on designed controller for a 8/6 prototype SRM validated the effectiveness of torque ripple minimization.
引文
[1]潘晓晨,张广明,王德明.基于改进的转矩分配函数法的SRM转矩间接控制[J].电机与控制应用,2016,43(5):1-6.
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[10]姚雪莲,齐瑞云,邓智泉,等.基于在线模糊神经网络的开关磁阻电机高性能转矩控制[J].电机与控制应用,2011,38(3):17-22.
[11]吴建华,孙国庆.基于转矩分配函数在线修正的开关磁阻电机转矩脉动抑制策略[J].电机与控制学报,2017,21(12):1-8.
[12]王喜莲,许振亮,王翠.开关磁阻电机转矩脉动与铜耗最小化控制研究[J].电机与控制学报,2015,19(7):52-57.
[13]YE J,BILGIN B,EMADI A.An extended-speed lowripple torque control of switched reluctance motor drives[J].IEEE Transactions on P ower Electronics,2015,30(3):1457-1470.
[14]SAHOO S K,DASGUPTA S,PANDA S K,et al.ALyapunov function-based robust direct torque controller for a switched reluctance motor system[J].IEEE Transactions on P ower Electronics,2012,27(2):555-564.
[2]孙刚,张磊.开关磁阻电机特征点交截的转子位置估计方法[J].电机与控制应用,2016,43(6):13-16.
[3]李哲,郑玲,杨威,等.开关磁阻电机转矩脉动及结构优化设计研究[J].电机与控制学报,2018,22(6):11-21.
[4]马铭遥,余发,杨晴晴,等.基于注入分段式谐波电流抑制开关磁阻电机转矩脉动的控制策略[J].中国电机工程学报,2018,38(1):285-291.
[5]YE J,BILGIN B,EMADI A.An offline torque sharing function for torque ripple reduction in switched reluctance motor drives[J].IEEETransactions on Energy Conversion,2015,30(2):726-735.
[6]王旭东,王喜莲.开关磁阻电动机电流双幅值斩波控制[J].中国电机工程学报,2000,20(4):83-86.
[7]GAH C,WU J,SUN Q,et al.Low-cost direct instantaneous torque control for switched reluctance motors with bus current detection under soft-chopping mode[J].IET P ower Electronics,2016,9(3):482-490.
[8]夏长亮,陈自然,李斌.基于RBF神经网络的开关磁阻电机瞬时转矩控制[J].中国电机工程学报,2006,26(19):127-132.
[9]王喜莲,许振亮.基于PI参数自适应的开关磁阻电机调速控制研究[J].中国电机工程学报,2015,35(16):4215-4223.
[10]姚雪莲,齐瑞云,邓智泉,等.基于在线模糊神经网络的开关磁阻电机高性能转矩控制[J].电机与控制应用,2011,38(3):17-22.
[11]吴建华,孙国庆.基于转矩分配函数在线修正的开关磁阻电机转矩脉动抑制策略[J].电机与控制学报,2017,21(12):1-8.
[12]王喜莲,许振亮,王翠.开关磁阻电机转矩脉动与铜耗最小化控制研究[J].电机与控制学报,2015,19(7):52-57.
[13]YE J,BILGIN B,EMADI A.An extended-speed lowripple torque control of switched reluctance motor drives[J].IEEE Transactions on P ower Electronics,2015,30(3):1457-1470.
[14]SAHOO S K,DASGUPTA S,PANDA S K,et al.ALyapunov function-based robust direct torque controller for a switched reluctance motor system[J].IEEE Transactions on P ower Electronics,2012,27(2):555-564.