基于直流侧电流的永磁同步电机电磁转矩控制
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摘要
为简化永磁同步电动机控制系统结构,提出了一种基于直流侧电流的电磁转矩控制方法。该方法根据电磁转矩与直流侧电流的关系,将电磁转矩控制转化为对直流侧电流的控制,以实现电磁转矩的间接控制。与传统的电磁转矩控制方法相比,该方法仅需要一个采样电阻和一个电流控制器,无需复杂的坐标变换,可简化系统控制结构,提高系统的实时性。对某永磁同步电动机的实验结果表明,该方法是可行的。
To simplify the control structure of the permanent magnetic synchronous motors( PMSM),a torque control strategy based on DC-link current was proposed. According to the relationship between the electromagnetic torque and DC-link current of the converter,this strategy transformed torque control into DC-link current control,therefore could control the torque indirectly by measuring DC-link current. Compared with conventional torque control methods,this strategy does need only one sampling resistor and one current controller,and does not need complicate coordinate transformations. Therefore it can simplify the control structure and improve the real-timing of the servo systems. Experimental results on a PMSM show that the proposed strategy is feasible.
To simplify the control structure of the permanent magnetic synchronous motors( PMSM),a torque control strategy based on DC-link current was proposed. According to the relationship between the electromagnetic torque and DC-link current of the converter,this strategy transformed torque control into DC-link current control,therefore could control the torque indirectly by measuring DC-link current. Compared with conventional torque control methods,this strategy does need only one sampling resistor and one current controller,and does not need complicate coordinate transformations. Therefore it can simplify the control structure and improve the real-timing of the servo systems. Experimental results on a PMSM show that the proposed strategy is feasible.
引文
[1]敖然,晓岚.永磁同步电机伺服系统电流环的研究[J].电力电子技术,2008,42(1):57-59.
[2]Zhong L,Rahman M F,Hu W Y.A Direct Torque Controller for Permanent Magnet Synchronous Motor Drives[J].IEEE Transactions on Energy Conversion,1999,14(3):637-642.
[3]Caricchi F,Capponi F G,Crescimbini F Solero L.Sinusoidal Brushless Drive with Low Cost Linear Hall Effect Position Sensors[C].Proceeding of Power Electronics Specialists Conference,2001:799-804.
[4]陈荣,严仰光.交流永磁伺服系统控制策略研究[J].电机与控制学报,2004,8(3):205-208.
[5]Y Feng,J F Zheng,X H Yu,et al.Hybrid Terminal Sliding Mode Observer Design Method for a Permanent Magnet Synchronous Motor Control System[J].IEEE Trans.Ind.Electron.,2009,56(9):3424-3431.
[6]P Caravani,S Di Gennaro.Robust Control of Synchronous Motor with Non-linear and Parameter Uncertainties[J].Automatica,1998,34:445-450.
[7]Fayez F M,El-Sousy.Hybrid H-infinity-Based Wavelet Neural Network Tracking Control for Permanent-Magnet Synchronous Motor Servo Drives[J].IEEE Transactions on Industrial Electronics,2010,57(9):3157-3166.
[8]Jian-Xin Xu,S K Panda,Ya-Jun Pan,et al.A Modular Control Scheme for PMSM Speed Control with Pulsating Torque Minimization[J].IEEE Transaction on Industrial Electronic,2004,51(3):526-536.
[9]M Liu,Z Cai,X Cheng,et al.Adaptive Position Servo Control of Permanent Magnet Synchronous Motor[C].Proceeding of the 2004American Control Conference,2004:84-89.
[10]王宏佳,徐殿国,杨明.永磁同步电机改进无差拍电流预测控制[J].电工技术学报,2011,26(6):39-45.
[11]赵临博,吴忠.永磁同步电动机简易电流控制[J].仪器仪表学报,2008,20(4增):254-257.
[12]陈小波,黄文新,胡育文.变频器单电阻电流采样及相电流重构方法[J].电气传动,2010,40(8):3-6.
[13]寇宝泉,程树康.交流伺服电机及其控制[M].北京:机械工业出版社,2008.
[2]Zhong L,Rahman M F,Hu W Y.A Direct Torque Controller for Permanent Magnet Synchronous Motor Drives[J].IEEE Transactions on Energy Conversion,1999,14(3):637-642.
[3]Caricchi F,Capponi F G,Crescimbini F Solero L.Sinusoidal Brushless Drive with Low Cost Linear Hall Effect Position Sensors[C].Proceeding of Power Electronics Specialists Conference,2001:799-804.
[4]陈荣,严仰光.交流永磁伺服系统控制策略研究[J].电机与控制学报,2004,8(3):205-208.
[5]Y Feng,J F Zheng,X H Yu,et al.Hybrid Terminal Sliding Mode Observer Design Method for a Permanent Magnet Synchronous Motor Control System[J].IEEE Trans.Ind.Electron.,2009,56(9):3424-3431.
[6]P Caravani,S Di Gennaro.Robust Control of Synchronous Motor with Non-linear and Parameter Uncertainties[J].Automatica,1998,34:445-450.
[7]Fayez F M,El-Sousy.Hybrid H-infinity-Based Wavelet Neural Network Tracking Control for Permanent-Magnet Synchronous Motor Servo Drives[J].IEEE Transactions on Industrial Electronics,2010,57(9):3157-3166.
[8]Jian-Xin Xu,S K Panda,Ya-Jun Pan,et al.A Modular Control Scheme for PMSM Speed Control with Pulsating Torque Minimization[J].IEEE Transaction on Industrial Electronic,2004,51(3):526-536.
[9]M Liu,Z Cai,X Cheng,et al.Adaptive Position Servo Control of Permanent Magnet Synchronous Motor[C].Proceeding of the 2004American Control Conference,2004:84-89.
[10]王宏佳,徐殿国,杨明.永磁同步电机改进无差拍电流预测控制[J].电工技术学报,2011,26(6):39-45.
[11]赵临博,吴忠.永磁同步电动机简易电流控制[J].仪器仪表学报,2008,20(4增):254-257.
[12]陈小波,黄文新,胡育文.变频器单电阻电流采样及相电流重构方法[J].电气传动,2010,40(8):3-6.
[13]寇宝泉,程树康.交流伺服电机及其控制[M].北京:机械工业出版社,2008.