基于动态转矩滞环的TLDMC-PMSM直接转矩控制
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摘要
针对矩阵变换器永磁同步电机直接转矩控制系统中定子磁链在扇区分界处出现磁链畸变、幅值失调的现象,提出一种基于动态转矩滞环比较器的三电平直接矩阵变换器永磁同步电机直接转矩控制方法。首先阐述传统矩阵变换器直接转矩控制的原理;其次,分析低速下定子磁链幅值失调的问题,提出动态转矩滞环的方法;然后,为进一步降低转矩脉动和共模电压,将所提方法应用于三电平直接矩阵变换器,并推导出新的开关表;最后,通过Matlab/Simulink仿真软件和硬件实验平台验证所提方法的可行性和优越性。与传统矩阵变换器直接转矩控制方法相比,所提的控制方法对转矩和磁链控制性能有较大提升。
Aiming at the phenomenon of flux linkage distortion and amplitude out of control occurring around the stator flux linkage circle sector boundary for the direct torque control(DTC) of matrix converter(MC)-fed permanent magnet synchronous motor(PMSM), a method of dynamic torque hysteresis comparator for the DTC of three-level direct matrix converter(TLDMC)-fed PMSM was proposed. Firstly, the principle of traditional DTC for MC was illustrated. Secondly,the problem of the imbalanced stator flux linkage at low speed was analyzed and a dynamic torque hysteresis method was proposed. Then, in order to reduce the torque ripple and common-mode voltage, the proposed method was applied to TLDMC and a new switching table was derived. Lastly, the feasibility and superiority of the proposed method was verified by Matlab/Simulink simulation software and hardware experimental platform. Compared with the traditional DTC for MC, the proposed method greatly improves the control performance of torque and flux linkage.
Aiming at the phenomenon of flux linkage distortion and amplitude out of control occurring around the stator flux linkage circle sector boundary for the direct torque control(DTC) of matrix converter(MC)-fed permanent magnet synchronous motor(PMSM), a method of dynamic torque hysteresis comparator for the DTC of three-level direct matrix converter(TLDMC)-fed PMSM was proposed. Firstly, the principle of traditional DTC for MC was illustrated. Secondly,the problem of the imbalanced stator flux linkage at low speed was analyzed and a dynamic torque hysteresis method was proposed. Then, in order to reduce the torque ripple and common-mode voltage, the proposed method was applied to TLDMC and a new switching table was derived. Lastly, the feasibility and superiority of the proposed method was verified by Matlab/Simulink simulation software and hardware experimental platform. Compared with the traditional DTC for MC, the proposed method greatly improves the control performance of torque and flux linkage.
引文
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[15]徐艳平,钟彦儒.扇区细分和占空比控制相结合的永磁同步电机直接转矩控制[J].中国电机工程学报,2009,29(3):102-108.Xu Yanping,Zhong Yanru.Sectors subdivision and duty ratio control combined direct torque control for permanent magnet synchronous motors[J].Proceedings of the CSEE,2009,29(3):102-108(in Chinese).
[16]粟梅,张关关,孙尧,等.减少间接矩阵变换器共模电压的改进空间矢量调制策略[J].中国电机工程学报,2014,34(24):4015-4021.Su Mei,Zhang Guanguan,Sun Yao,et al.Improved space vector modulation to reduce the common mode voltage for indirect matrix converters[J].Proceedings of the CSEE,2014,34(24):4015-4021(in Chinese).
[17]Vafaie M H,Dehkordi B M,Moallem P,et al.A new predictive direct torque control method for improving both steady-state and transient-state operations of the PMSM[J].IEEE Transactions on Power Electronics,2016,31(5):3738-3753.
[18]Raju S,Srivatchan L,Mohan N.Direct space vector modulated three level matrix converter[C]//Proceedings of28th Annual IEEE Applied Power Electronics Conference and Exposition.Long Beach,CA,USA:IEEE,2013:475-481.
[2]张晓光,张亮,侯本帅.永磁同步电机优化模型预测转矩控制[J].中国电机工程学报,2017,37(16):4800-4809.Zhang Xiaoguang,Zhang Liang,Hou Benshuai.Improved model predictive torque control of permanent magnet synchronous motor[J].Proceedings of the CSEE,2017,37(16):4800-4809(in Chinese).
[3]夏长亮,张天一,周湛清,等.结合开关表的三电平逆变器永磁同步电机模型预测转矩控制[J].电工技术学报,2016,31(20):83-92,110.Xia Changliang,Zhang Tianyi,Zhou Zhanqing,et al.Model predictive torque control with switching table for neutral point clamped three-level inverter-fed permanent magnet synchronous motor[J].Transactions of China Electrotechnical Society,2016,31(20):83-92,110(in Chinese).
[4]陈炜,赵迎迎,周湛清.采用新型评价表的三电平逆变器占空比调制直接转矩控制[J].电工技术学报,2016,31(S1):128-136.Chen Wei,Zhao Yingying,Zhou Zhanqing.Direct torque control using new evaluation table of three-level inverter based on duty cycle modulation[J].Transactions of China Electrotechnical Society,2016,31(S1):128-136(in Chinese).
[5]夏益辉,张晓锋,乔鸣忠,等.矩阵变换器的两种网侧单位功率因数控制方法[J].中国电机工程学报,2016,36(5):1328-1335.Xia Yihui,Zhang Xiaofeng,Qiao Mingzhong,et al.Two grid side power factor at unity control methods of matrix converter[J].Proceedings of the CSEE,2016,36(5):1328-1335(in Chinese).
[6]邱麟,许烈,李永东.悬浮电容钳位多电平矩阵变换器拓扑与控制[J].电力系统自动化,2014,38(8):78-83,112.Qiu Lin,Xu Lie,Li Yongdong.Topology and control for flying-capacitor clamped multi-level matrix converter[J].Automation of Electric Power Systems,2014,38(8):78-83,112(in Chinese).
[7]夏长亮,阎彦.矩阵变换器-永磁同步电机系统[J].电工技术学报,2015,30(23):1-9.Xia Changliang,Yan Yan.Matrix converter-permanent magnet synchronous motor drives[J].Transactions of China Electrotechnical Society,2015,30(23):1-9(in Chinese).
[8]Ortega C,Arias A,Caruana C,et al.Improved waveform quality in the direct torque control of matrix-converter-fed PMSM drives[J].IEEE Transactions on Industrial Electronics,2010,57(6):2101-2110.
[9]Yan Yan,Zhao Jiaxin,Xia Changliang,et al.Direct torque control of matrix converter-fed permanent magnet synchronous motor drives based on master and slave vectors[J].IET Power Electronics,2015,8(2):288-296.
[10]Xia Changliang,Zhao Jiaxin,Yan Yan,et al.A novel direct torque control of matrix converter-fed PMSM drives using duty cycle control for torque ripple reduction[J].IEEE Transactions on Industrial Electronics,2014,61(6):2700-2713.
[11]Xiao Dan,Rahman M F.Sensorless direct torque and flux controlled IPM synchronous machine fed by matrix converter over a wide speed range[J].IEEE Transactions on Industrial Informatics,2013,9(4):1855-1867.
[12]Siami M,Khaburi D A,Rivera M,et al.An experimental evaluation of predictive current control and predictive torque control for a PMSM fed by a matrix converter[J].IEEE Transactions on Industrial Electronics,2017,64(11):8459-8471.
[13]Siami M,Khaburi D A,Rodriguez J.Simplified finite control set-model predictive control for matrix converter-fed PMSM drives[J].IEEE Transactions on Power Electronics,2018,33(3):2438-2446.
[14]Sebtahmadi S S,Pirasteh H,Kaboli S H A,et al.A12-sector space vector switching scheme for performance improvement of matrix-converter-based DTC of IMdrive[J].IEEE Transactions on Power Electronics,2015,30(7):3804-3817.
[15]徐艳平,钟彦儒.扇区细分和占空比控制相结合的永磁同步电机直接转矩控制[J].中国电机工程学报,2009,29(3):102-108.Xu Yanping,Zhong Yanru.Sectors subdivision and duty ratio control combined direct torque control for permanent magnet synchronous motors[J].Proceedings of the CSEE,2009,29(3):102-108(in Chinese).
[16]粟梅,张关关,孙尧,等.减少间接矩阵变换器共模电压的改进空间矢量调制策略[J].中国电机工程学报,2014,34(24):4015-4021.Su Mei,Zhang Guanguan,Sun Yao,et al.Improved space vector modulation to reduce the common mode voltage for indirect matrix converters[J].Proceedings of the CSEE,2014,34(24):4015-4021(in Chinese).
[17]Vafaie M H,Dehkordi B M,Moallem P,et al.A new predictive direct torque control method for improving both steady-state and transient-state operations of the PMSM[J].IEEE Transactions on Power Electronics,2016,31(5):3738-3753.
[18]Raju S,Srivatchan L,Mohan N.Direct space vector modulated three level matrix converter[C]//Proceedings of28th Annual IEEE Applied Power Electronics Conference and Exposition.Long Beach,CA,USA:IEEE,2013:475-481.