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第6期 马保柱等:基于空间矢量脉宽调制的永磁同步电动机直接磁链控制 .679. 20r Proe Chin Soc Electr Eng.2006.26(13):151 (冯江华,许峻峰。永磁同步电机直接转矩控制系统转矩调节 日15 新方法,中国电机工程学报,2006,26(13):151) [3]Liu J.Chu X G.Bai H Y.Study of permanent magnet syn- chronous motor direct torque control based on the strategy of ref- erence stator flux linkage and voltage space vector modulation. Trans China Electrotech Soc,2005.20(6):11 0.050.100.150.200.25 (刘军,楚小刚,白华煜.基于参考磁链电压空间矢量调制策 时间s 略的永磁同步电机直接转矩控制研究.电工技术学报,2005, 20(6):11) 图6基于CVC的转矩动态响应 [4]Zhu Y.She Y.Jiang J G.Improved space vector modulation Fig.6 Dynamie torque response based on CVC technique for direet torque Control.Small Spec Electr Mach, 图6显示,由于进入了弱磁区域,电流调节器已 2006(3):28 经饱和,所以转矩响应性能变得不稳定;而采用直接 (朱琰,佘焱,姜建国,一种改进的直接转矩控制电压矢量调 制方法,微特电机,2006(3):28) 磁链控制(如图5所示),由于此时过调制策略开始 [5]Kang J K.Sul S K.New direet torque control of induction motor 起作用,所以速度和转矩响应较快,且动态响应时间 for minimum torque ripple and constant switching frequency 相对较短,约为80ms,比采用CVC方法缩短了近一 IEEE Trans Ind Appl.1999.35(5):1076 半的时间. [6]Sun D.He Y K.Space vector modulated based constant switching frequency direet torque control for permanent magnet synchronous 4结论 motor.Proc Chin Soc Electr Eng.2005.25(12):112 (孙丹,贺益康,基于恒定开关颜率空间矢量调制的永磁同步 本文提出了一种基于定子磁链直接控制的动态 电机直接转矩控制.中国电机工程学报,2005,25(12):112) 及静态转矩控制方案,通过设置相应的约束条件可 [7]Tang L.Zhong L.Rahman M F,et al.A novel direct torque 以实现弱磁控制区较好的动态及静态转矩特性,此 control scheme for interior permanent magnet synchronous ma- 方案由基本的DTC方案而来,但具有恒定开关频率 chine drive system with low ripple in torque and flux,and fixed switching frequency//IEEE PESC.2002:529 及减小转矩和磁链脉动等优点,转矩的动态响应显 [8]Jawad F S.Hossein MZ.A novel technique for estimation and 示在恒功率区可获得最佳的转矩,与传统的方案相 control of stator flux of a salient pole PMSM in DTC method 比,新提出方案在较宽的速度运行范围提高了系统 based on MTPF.IEEE Trans Ind Electron,2003,50(2):262 的动静态响应,仿真证明了所提出方案的可行性, [9]Liu Q H.Khambadkone A M,Tripathi A.et al.Torque control of IPMSM drives using direct flux control for wide speed opera- 参考文献 tion.IEEE International Electric Machine Drives Conference. 2003:188 [1]Zhong L.Rahman M F.Hu W Y,et al.Analysis of direct of di- rect torque control in permanent synchronous motor drives.IEEE [10]Tripathi A.Khambadkone A M.Dynamic torque control perfor- Trans Power Electron.1997.12(3):528 mance of the direct flux control scheme in field weakening range [2]Feng J H.Xu J F.A new torque adjustment method of perma- /Industrial Electronics Conference Proceedings.2003.1:220 nent magnet synchronous machines direct torque control system.图6 基于 CVC 的转矩动态响应 Fig.6 Dynamic torque response based on CVC 图6显示‚由于进入了弱磁区域‚电流调节器已 经饱和‚所以转矩响应性能变得不稳定;而采用直接 磁链控制(如图5所示)‚由于此时过调制策略开始 起作用‚所以速度和转矩响应较快‚且动态响应时间 相对较短‚约为80ms‚比采用 CVC 方法缩短了近一 半的时间. 4 结论 本文提出了一种基于定子磁链直接控制的动态 及静态转矩控制方案‚通过设置相应的约束条件可 以实现弱磁控制区较好的动态及静态转矩特性.此 方案由基本的 DTC 方案而来‚但具有恒定开关频率 及减小转矩和磁链脉动等优点‚转矩的动态响应显 示在恒功率区可获得最佳的转矩.与传统的方案相 比‚新提出方案在较宽的速度运行范围提高了系统 的动静态响应.仿真证明了所提出方案的可行性. 参 考 文 献 [1] Zhong L‚Rahman M F‚Hu W Y‚et al.Analysis of direct of di￾rect torque control in permanent synchronous motor drives.IEEE T rans Power Electron‚1997‚12(3):528 [2] Feng J H‚Xu J F.A new torque adjustment method of perma￾nent magnet synchronous machines direct torque control system. Proc Chin Soc Electr Eng‚2006‚26(13):151 (冯江华‚许峻峰.永磁同步电机直接转矩控制系统转矩调节 新方法.中国电机工程学报‚2006‚26(13):151) [3] Liu J‚Chu X G‚Bai H Y.Study of permanent magnet syn￾chronous motor direct torque control based on the strategy of ref￾erence stator flux linkage and voltage space vector modulation. T rans China Electrotech Soc‚2005‚20(6):11 (刘军‚楚小刚‚白华煜.基于参考磁链电压空间矢量调制策 略的永磁同步电机直接转矩控制研究.电工技术学报‚2005‚ 20(6):11) [4] Zhu Y‚She Y‚Jiang J G.Improved space vector modulation technique for direct torque Control. Small Spec Electr Mach‚ 2006(3):28 (朱琰‚佘焱‚姜建国.一种改进的直接转矩控制电压矢量调 制方法.微特电机‚2006(3):28) [5] Kang J K‚Sul S K.New direct torque control of induction motor for minimum torque ripple and constant switching frequency. IEEE T rans Ind Appl‚1999‚35(5):1076 [6] Sun D‚He Y K.Space vector modulated based constant switching frequency direct torque control for permanent magnet synchronous motor.Proc Chin Soc Electr Eng‚2005‚25(12):112 (孙丹‚贺益康.基于恒定开关频率空间矢量调制的永磁同步 电机直接转矩控制.中国电机工程学报‚2005‚25(12):112) [7] Tang L‚Zhong L‚Rahman M F‚et al.A novel direct torque control scheme for interior permanent magnet synchronous ma￾chine drive system with low ripple in torque and flux‚and fixed switching frequency∥ IEEE PESC‚2002:529 [8] Jawad F S‚Hossein M Z.A novel technique for estimation and control of stator flux of a salient-pole PMSM in DTC method based on MTPF.IEEE T rans Ind Electron‚2003‚50(2):262 [9] Liu Q H‚Khambadkone A M‚Tripathi A‚et al.Torque control of IPMSM drives using direct flux control for wide speed opera￾tion.IEEE International Electric Machine Drives Conference‚ 2003:188 [10] Tripathi A‚Khambadkone A M.Dynamic torque control perfor￾mance of the direct flux control scheme in field weakening range ∥ Industrial Electronics Conference Proceedings‚2003‚1:220 第6期 马保柱等: 基于空间矢量脉宽调制的永磁同步电动机直接磁链控制 ·679·
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