基于瞬时功率理论的无刷直流电机转矩控制
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摘要
无刷直流电机的转矩脉动会带来噪声、震动等问题。在介绍无刷直流电机的数学模型基础上,引入了瞬时功率理论推导得到瞬时转矩与电流和磁链函数之间的关系。通过给定转矩和磁链函数得到相应的参考电流,并通过电流滞环控制,使实际电流跟踪参考电流以达到转矩恒定的目的。仿真与实验结果表明,与传统PWM调制控制策略相比,基于瞬时功率理论的转矩控制策略能有效地抑制无刷直流电机的转矩脉动。
The torque ripple of Brushless DC Motor( BLDCM) can bring some problems such as noise and vibration. On the basis of recommending the mathematical model of BLDCM,the paper introduced instantaneous power theory,so the relation between torque,electric current and flux linkage function can be found.And according to the given torque and flux linkage function,got the corresponding reference current. By hysteresis current control,the actual current can track the reference current to make torque constant. The simulation and experimental results show that comparing with traditional PWM modulation control strategy,the torque control strategy on instantaneous power theory can inhibit torque ripple of BLDCM effectively.
The torque ripple of Brushless DC Motor( BLDCM) can bring some problems such as noise and vibration. On the basis of recommending the mathematical model of BLDCM,the paper introduced instantaneous power theory,so the relation between torque,electric current and flux linkage function can be found.And according to the given torque and flux linkage function,got the corresponding reference current. By hysteresis current control,the actual current can track the reference current to make torque constant. The simulation and experimental results show that comparing with traditional PWM modulation control strategy,the torque control strategy on instantaneous power theory can inhibit torque ripple of BLDCM effectively.
引文
[1]杨玉波,王秀和,丁婷婷,等.极弧系数组合优化的永磁电机齿槽转矩削弱方法[J].中国电机工程学报,2007(6):7-11.
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[3]Z Q Zhu,David Howe.Influence 0f Design Parameters on Cogging Torque in Permanent Magnet Machines[J].IEEE Trans on Energy Converision,2000,15(4):407-412.
[4]K-Y Nam,W-T Lee,C-M Lee,et al.Reducing Torque Ripple of Brushless DC Motor by Varying Input Voltage[J].IEEE Transactions on Magnetics,2006,42(4):1307-1310.
[5]王大方,卜德明,朱成,等.一种减小无刷直流电机换相转矩脉动的调制方法[J].电工技术学报,2014(5):160-166.
[6]朱燕青,史旺旺.无刷直流电机转矩脉动抑制新方法[J].电气传动,2011(9):6-9.
[7]邱建琪.永磁无刷直流电动机转矩脉动抑制的控制策略研究[D].杭州:浙江大学,2002.
[8]Miti G K,Renfrew A C,Chalmers B J.Field-weakening Regime for Brushless DC Motors Based on Instantaneous Power Theory[J].Electric Power Applications,2001148(3):265-271.
[9]夏长亮.无刷直流电机控制系统[M].北京:科学出版社,2009:31-37.
[10]王兆安,李民,卓放.三相电路瞬时无功功率理论的研究[J].电工技术学报,1992(3):55-59,39.
[2]谭建成.降低永磁无刷直流电动机齿槽转矩的设计措施[J].微电机,2008(4):64-68.
[3]Z Q Zhu,David Howe.Influence 0f Design Parameters on Cogging Torque in Permanent Magnet Machines[J].IEEE Trans on Energy Converision,2000,15(4):407-412.
[4]K-Y Nam,W-T Lee,C-M Lee,et al.Reducing Torque Ripple of Brushless DC Motor by Varying Input Voltage[J].IEEE Transactions on Magnetics,2006,42(4):1307-1310.
[5]王大方,卜德明,朱成,等.一种减小无刷直流电机换相转矩脉动的调制方法[J].电工技术学报,2014(5):160-166.
[6]朱燕青,史旺旺.无刷直流电机转矩脉动抑制新方法[J].电气传动,2011(9):6-9.
[7]邱建琪.永磁无刷直流电动机转矩脉动抑制的控制策略研究[D].杭州:浙江大学,2002.
[8]Miti G K,Renfrew A C,Chalmers B J.Field-weakening Regime for Brushless DC Motors Based on Instantaneous Power Theory[J].Electric Power Applications,2001148(3):265-271.
[9]夏长亮.无刷直流电机控制系统[M].北京:科学出版社,2009:31-37.
[10]王兆安,李民,卓放.三相电路瞬时无功功率理论的研究[J].电工技术学报,1992(3):55-59,39.