一种新型基于矢量空间解耦的多相三电平逆变器空间矢量调制策略
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摘要
该文以中压大功率交流电机驱动器为背景。针对多相电机驱动,提出一种基于矢量空间解耦(vector space decomposition,VSD)的中点箝位型多相三电平逆变器空间矢量调制策略。以五相三电平逆变器为例,利用VSD将变量解耦和映射到?-?基波平面和x-y谐波平面。将逆变器243个电压矢量进行精简和合成,得到基波平面和谐波平面解耦的两组电压矢量,分别用来合成基波分量和谐波分量。利用冗余矢量进行直流侧中点电压的控制。通过计算输出电压向量的作用时间,将各相输出电压状态进行合并以减小开关频率。最后通过实验验证提出的策略的正确性。
This paper was based on medium-voltage highpower AC motor drives. A multiphase neutral-point-clamped(NPC) three-level inverter space vector modulation(SVM) strategy based on vector space decomposition(VSD) was proposed for multiphase motor drives. Taking a five-phase three-level inverter as an example, the physical variables were decomposed and mapped onto fundamental ?-? subspace and harmonic x-y subspace with VSD. The 243 voltage vectors were selected and synthesized, in such way that two sets of voltage vectors were obtained for synthesis of voltage references on fundamental subspace and harmonic subspace, respectively. The control of the midpoint voltage in DC link was performed by using redundant voltage vectors. By calculating dwell time of output voltage vectors, the sequence of voltage vectors of each phase was rearranged to reduce the switching frequency. Finally, the experimental results were given to verify the mentioned strategy.
This paper was based on medium-voltage highpower AC motor drives. A multiphase neutral-point-clamped(NPC) three-level inverter space vector modulation(SVM) strategy based on vector space decomposition(VSD) was proposed for multiphase motor drives. Taking a five-phase three-level inverter as an example, the physical variables were decomposed and mapped onto fundamental ?-? subspace and harmonic x-y subspace with VSD. The 243 voltage vectors were selected and synthesized, in such way that two sets of voltage vectors were obtained for synthesis of voltage references on fundamental subspace and harmonic subspace, respectively. The control of the midpoint voltage in DC link was performed by using redundant voltage vectors. By calculating dwell time of output voltage vectors, the sequence of voltage vectors of each phase was rearranged to reduce the switching frequency. Finally, the experimental results were given to verify the mentioned strategy.
引文
[1]欧阳红林,周马山,童调生.多相永磁同步电动机不对称运行的矢量控制[J].中国电机工程学报,2004,24(7):145-150.Ouyang Honglin,Zhou Mashan,Tong Tiaosheng.Vector control of multi-phase permanent magnet synchronous motor with asymmetric structure[J].Proceedings of the CS EE,2004,24(7):145-150(in Chinese).
[2]Zhao Yifan,Lipo T A.Space vector PWM control of dual three-phase induction machine using vector space decomposition[J].IEEE Transactions on Industry Applications,1995,31(5):1100-1109.
[3]Shi R,Toliyat H A.Vector control of five-phase synchronous reluctance motor with space vector pulse width modulation(SVPWM)for minimum switching losses[C]//Proceedings of the 17th Annual IEEE Applied Power Electronics Conference and Exposition.Dallas,TX:IEEE,2002:57-63.
[4]Song Qingguo,Zhang Xiaofeng,Yu Fei,et al.Research on space vector PWM of five-phase three-level inverter[C]//Proceedings of 8th International Conference on Electrical Machines and Systems.Nanjing,China:IEEE,2005:1418-1421.
[5]Abjadi N R,Soltani J,Askari J,et al.Three-level five-phase space vector PWM inverter for a two five-phase series connected induction machine drive[J].Energy and Power Engineering,2010,2(1):10-17.
[6]于飞,张晓锋,李槐树,等.五相逆变器的空间矢量PWM控制[J].中国电机工程学报,2005,25(9):40-46.Yu Fei,Zhang Xiaofeng,Li Huaishu,et al.Space vector PWM contor of five-phase inverter[J].Proceedings of the CSEE,2005,25(9):40-46(in Chinese).
[7]Gao Liliang,Fletcher J E.A space vector switching strategy for three-level five-phase inverter drives[J].IEEE Transactions on Industrial Electronics,2010,57(7):2332-2343.
[8]Wang Zheng,Wang Yibo,Chen Jian,et al.Fault tolerant control of NPC three-level inverters fed double-stator-winding PMSM drives based on vector space decomposition[J].IEEE Transactions on Industrial Electronics,2017,doi:10.1109/TIE.2017.2701782(in Press).
[9]Dordevic O,Levi E,Jones M.A vector space decomposition based space vector PWM algorithm for a three-level seven-phase voltage source inverter[J].IEEE Transactions on Power Electronics,2013,28(2):637-649.
[10]Marouani K,Baghli L,Hadiouche D,et al.A new PWM strategy based on a 24-sector vector space decomposition for a six-phase VSI-fed dual stator induction motor[J].IEEE Transactions on Industrial Electronics,2008,55(5):1910-1920.
[11]高宏伟,杨贵杰,刘剑.五相电压源逆变器的空间矢量脉宽调制方法研究[J].中国电机工程学报,2014,34(18):2917-2925.Gao Hongwei,Yang Guijie,Liu Jian.Research of space vector PWM techniques for five-phase voltage source inverter[J].Proceedings of the CSEE,2014,34(18):2917-2925(in Chinese).
[12]Hu Yashan,Zhu Ziqiang,Liu Kan.Current control for dual three-phase permanent magnet synchronous motors accounting for current unbalance and harmonics[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2014,2(2):272-284.
[13]Karttunen J,Kallio S,Peltoniemi P,et al.Decoupled vector control scheme for dual three-phase permanent magnet synchronous machines[J].IEEE Transactions on Industrial Electronics,2014,61(5):2185-2196.
[14]姚文熙,胡海兵,徐海杰,等.三电平六相同步电机变频调速技术研究[J].中国电机工程学报,2007,27(18):1-6.Yao Wenxi,Hu Haibing,Xu Haijie,et al.Research on techniques of three-level six-phase synchronous motor driver[J].Proceedings of the CSEE,2007,27(18):1-6(in Chinese).
[15]Rodriguez J,Bernet S,Steimer P K,et al.A survey on neutral-point-clamped inverters[J].IEEE Transactions on Industrial Electronics,2010,57(7):2219-2230.
[16]姜卫东,杨柏旺,黄静,等.不同零序电压注入的NPC三电平逆变器中点电位平衡算法的比较[J].中国电机工程学报,2013,33(33):17-25.Jiang Weidong,Yang Bowang,Huang Jing,et al.Comparisons of the neutral point voltage balancing algorithm for NPC three-level inverters based on different zero-sequence voltage injection[J].Proceedings of the CSEE,2013,33(33):17-25(in Chinese).
[17]吴可丽,夏长亮,张云,等.二极管钳位型三电平逆变器共模电压抑制[J].电工技术学报,2015,30(24):110-118.Wu Keli,Xia Changliang,Zhang Yun,et al.Common-mode voltage suppression for neutral-point-clamped three-level inverter[J].Transactions of China Electrotechnical Society,2015,30(24):110-118(in Chinese).
[18]姜卫东,王群京,史晓锋,等.中点箝位型三电平逆变器在空间矢量调制时中点电位的低频振荡[J].中国电机工程学报,2009,29(3):49-55.Jiang Weidong,Wang Qunjing,Shi Xiaofeng,el al.Low frequency oscillation of neutral point voltage of neutral-point-clamped three-level VSI under SVPWM control[J].Proceedings of the CSEE,2009,29(3):49-55(in Chinese).
[19]杨金波,杨贵杰,李铁才.六相电压源逆变器PWM算法[J].电工技术学报,2012,27(7):205-211.Yang Jinbo,Yang Guijie,Li Tiecai.PWM techniques for six-phase voltage-source inverters[J].Transactions of China Electrotechnical Society,2012,27(7):205-211(in Chinese).
[2]Zhao Yifan,Lipo T A.Space vector PWM control of dual three-phase induction machine using vector space decomposition[J].IEEE Transactions on Industry Applications,1995,31(5):1100-1109.
[3]Shi R,Toliyat H A.Vector control of five-phase synchronous reluctance motor with space vector pulse width modulation(SVPWM)for minimum switching losses[C]//Proceedings of the 17th Annual IEEE Applied Power Electronics Conference and Exposition.Dallas,TX:IEEE,2002:57-63.
[4]Song Qingguo,Zhang Xiaofeng,Yu Fei,et al.Research on space vector PWM of five-phase three-level inverter[C]//Proceedings of 8th International Conference on Electrical Machines and Systems.Nanjing,China:IEEE,2005:1418-1421.
[5]Abjadi N R,Soltani J,Askari J,et al.Three-level five-phase space vector PWM inverter for a two five-phase series connected induction machine drive[J].Energy and Power Engineering,2010,2(1):10-17.
[6]于飞,张晓锋,李槐树,等.五相逆变器的空间矢量PWM控制[J].中国电机工程学报,2005,25(9):40-46.Yu Fei,Zhang Xiaofeng,Li Huaishu,et al.Space vector PWM contor of five-phase inverter[J].Proceedings of the CSEE,2005,25(9):40-46(in Chinese).
[7]Gao Liliang,Fletcher J E.A space vector switching strategy for three-level five-phase inverter drives[J].IEEE Transactions on Industrial Electronics,2010,57(7):2332-2343.
[8]Wang Zheng,Wang Yibo,Chen Jian,et al.Fault tolerant control of NPC three-level inverters fed double-stator-winding PMSM drives based on vector space decomposition[J].IEEE Transactions on Industrial Electronics,2017,doi:10.1109/TIE.2017.2701782(in Press).
[9]Dordevic O,Levi E,Jones M.A vector space decomposition based space vector PWM algorithm for a three-level seven-phase voltage source inverter[J].IEEE Transactions on Power Electronics,2013,28(2):637-649.
[10]Marouani K,Baghli L,Hadiouche D,et al.A new PWM strategy based on a 24-sector vector space decomposition for a six-phase VSI-fed dual stator induction motor[J].IEEE Transactions on Industrial Electronics,2008,55(5):1910-1920.
[11]高宏伟,杨贵杰,刘剑.五相电压源逆变器的空间矢量脉宽调制方法研究[J].中国电机工程学报,2014,34(18):2917-2925.Gao Hongwei,Yang Guijie,Liu Jian.Research of space vector PWM techniques for five-phase voltage source inverter[J].Proceedings of the CSEE,2014,34(18):2917-2925(in Chinese).
[12]Hu Yashan,Zhu Ziqiang,Liu Kan.Current control for dual three-phase permanent magnet synchronous motors accounting for current unbalance and harmonics[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2014,2(2):272-284.
[13]Karttunen J,Kallio S,Peltoniemi P,et al.Decoupled vector control scheme for dual three-phase permanent magnet synchronous machines[J].IEEE Transactions on Industrial Electronics,2014,61(5):2185-2196.
[14]姚文熙,胡海兵,徐海杰,等.三电平六相同步电机变频调速技术研究[J].中国电机工程学报,2007,27(18):1-6.Yao Wenxi,Hu Haibing,Xu Haijie,et al.Research on techniques of three-level six-phase synchronous motor driver[J].Proceedings of the CSEE,2007,27(18):1-6(in Chinese).
[15]Rodriguez J,Bernet S,Steimer P K,et al.A survey on neutral-point-clamped inverters[J].IEEE Transactions on Industrial Electronics,2010,57(7):2219-2230.
[16]姜卫东,杨柏旺,黄静,等.不同零序电压注入的NPC三电平逆变器中点电位平衡算法的比较[J].中国电机工程学报,2013,33(33):17-25.Jiang Weidong,Yang Bowang,Huang Jing,et al.Comparisons of the neutral point voltage balancing algorithm for NPC three-level inverters based on different zero-sequence voltage injection[J].Proceedings of the CSEE,2013,33(33):17-25(in Chinese).
[17]吴可丽,夏长亮,张云,等.二极管钳位型三电平逆变器共模电压抑制[J].电工技术学报,2015,30(24):110-118.Wu Keli,Xia Changliang,Zhang Yun,et al.Common-mode voltage suppression for neutral-point-clamped three-level inverter[J].Transactions of China Electrotechnical Society,2015,30(24):110-118(in Chinese).
[18]姜卫东,王群京,史晓锋,等.中点箝位型三电平逆变器在空间矢量调制时中点电位的低频振荡[J].中国电机工程学报,2009,29(3):49-55.Jiang Weidong,Wang Qunjing,Shi Xiaofeng,el al.Low frequency oscillation of neutral point voltage of neutral-point-clamped three-level VSI under SVPWM control[J].Proceedings of the CSEE,2009,29(3):49-55(in Chinese).
[19]杨金波,杨贵杰,李铁才.六相电压源逆变器PWM算法[J].电工技术学报,2012,27(7):205-211.Yang Jinbo,Yang Guijie,Li Tiecai.PWM techniques for six-phase voltage-source inverters[J].Transactions of China Electrotechnical Society,2012,27(7):205-211(in Chinese).