绕线转子自起动永磁电机斩波起动控制方法
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摘要
针对绕线转子自起动永磁电机(WRLS-PMSM)PWM斩波调阻起动控制方法进行研究,通过调节转子绕组回路外串等效电阻,使起动平均转矩始终保持在最大值,改善起动性能。将定转子交流电量和阻抗关系折算到直流斩波控制环节,建立PWM斩波调阻准动态数学模型,推导出斩波占空比与转子等效外串电阻关系;总结输出最大合成异步转矩时的转子外串电阻与转速关系,进而得到斩波控制规律;搭建WRLS-PMSM起动性能实验平台,将WRLS-PMSM转子斩波调阻起动与转子自短路起动、鼠笼转子永磁电机直接起动性能进行对比分析,发现采用实时最大异步转矩输出的转子斩波起动方法能够有效提高永磁电机的起动转矩,抑制起动电流,提高牵入能力。
PWM chopper resistance regulation starting control method was proposed for the wound rotor line-start PMSM( WRLS-PMSM). In order to improve the starting performance,the average starting torque always was kept in maximum by adjusting the equivalent resistance series connected to rotor winding in the process of starting. The relation between the equivalent series resistance and chopper duty ratio was deduced with PWM chopper adjustable resistance quasi dynamic mathematical model establishment by converting impedance and voltage to the dc chopper link; when the synthetic asynchronous torque is the biggest,the relationship between the equivalent series resistance in the rotor side and speed can be deduced. The chopper rules can be acquired,which sets the starting performance experimental platform of WRLS-PMSM. And the starting performance was tested. The comparison with the rotor winding short-circuit starting and traditional squirrel cage rotor LS-PMSM verified the effectiveness of the proposed approach for increasing greatly the starting torque,limiting the starting current as well as improving the pullin performance.
PWM chopper resistance regulation starting control method was proposed for the wound rotor line-start PMSM( WRLS-PMSM). In order to improve the starting performance,the average starting torque always was kept in maximum by adjusting the equivalent resistance series connected to rotor winding in the process of starting. The relation between the equivalent series resistance and chopper duty ratio was deduced with PWM chopper adjustable resistance quasi dynamic mathematical model establishment by converting impedance and voltage to the dc chopper link; when the synthetic asynchronous torque is the biggest,the relationship between the equivalent series resistance in the rotor side and speed can be deduced. The chopper rules can be acquired,which sets the starting performance experimental platform of WRLS-PMSM. And the starting performance was tested. The comparison with the rotor winding short-circuit starting and traditional squirrel cage rotor LS-PMSM verified the effectiveness of the proposed approach for increasing greatly the starting torque,limiting the starting current as well as improving the pullin performance.
引文
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[11]FENG Gui-hong,LI Qing-xu,ZHANG Bing-yi.Study on starting performance of a novel wound rotor line-start PMSM with WMW[C]//2011 International Conference on Electrical Machines and Systems,20-23 Aug.2011,beijing,China.2011:1-5.
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[14]祁强,张广溢.异步电动机转子电阻斩波调速系统的特性分析与仿真研究[J].电机与控制学报.2005,9(1):45-47.QI Qiang,ZHANG Guangyi.Performance analysis and simulation study of the rotor chopper controlled induction motor[J].Electric Machines and Control,2005,977(1):45-47.
[15]彭清祥.绕线异步电机转子电流斩波调速系统设计[D].长沙:中南大学,2008.
[2]ZHOU Ping.Field circuit analysis of permanent magnet synchronous motors[J].IEEE Transactions on Magnetics,1994,30(4):1350-1359.
[3]刘秀君,李伟力,陈文彪.三相异步起动永磁同步电动机起动特性[J].电机与控制学报.2006,10(3):269-274.LIU Xiujun,LI Weili,CHEN Wenbiao.Analysis of starting characteristics of three-phase line-start permanent magnet synchronous motor[J].Electric Machines and Control,2006,10(3):269-274.
[4]卢伟甫,赵海森,刘明基等.自起动永磁电机复合材料转子导条的优化[J].电机与控制学报.2013,17(1):1-6.LU Weifu,ZHAO Haisen,LIU Mingji,et al.Optimization of the composite material rotor bar for a line-start permanent magnet synchronous motor[J].Electric Machines and Control,2013,17(1):1-6.
[5]KURIHARA K,RAHMAN MA.High-efficiency line-start interior permanent-magnet synchronous motors[J].IEEE Transactions on Power Apparatus and Systems,2004,40(3):789-796.
[6]DING Tingting,TAKORABET N,FM S.Design and analysis of different line-start PM synchronous motors for oil-pump applications[J].IEEE Transactions on Magnetics,2009,40(3):1816
[7]CHEN Xudong,QIAN Jingen,NI Guangzheng.An improved genetic algorithm for global optimization of electromagnetic problems[J].IEEE Transactions on Magnetics,2001,(05):3579-3583.
[8]张健,罗应立,李和明,等.确定自起动永磁电机最小转矩的时步有限元仿真实验方法[J].中国电机工程学报.2011,31(21):102-109.ZHANG Jian,LUO Yingli,LI Heming,et al.Time-stepping finite element simulation experimental method of determining line-start permanent magnet motor minimal torque[J].Proceedings of the CSEE,2011,31(21):102-109.
[9]李爽.低速大转矩绕线转子自起动永磁同步电动机的设计与起动性能分析[D].沈阳:沈阳工业大学,2011.
[10]FENG Gui-hong,LI Chao,ZHANG Bing-yi.Analysis on starting performance of a novel wound rotor Line-start Permanent Magnet Synchronous Motor[C]//2011 International Conference on Electrical Machines and Systems,20-23 Aug.2011,Beijing,China.2011:1-4.
[11]FENG Gui-hong,LI Qing-xu,ZHANG Bing-yi.Study on starting performance of a novel wound rotor line-start PMSM with WMW[C]//2011 International Conference on Electrical Machines and Systems,20-23 Aug.2011,beijing,China.2011:1-5.
[12]SEN P C.Rotor chopper control for induction motor drive:TRC strategy[J].IEEE Transactions on Industry Applications,1975,11(1):43-49.
[13]沈天飞,陈伯时,龚幼民.异步电机转子IGBT斩波调阻调速的准动态模型[J].电机与控制学报.2001,5(1):20-23.SHEN Tianfei,CHEN Boshi,GONG Youmin.Quasi-dynamic model of the rotor IGBT chopper controlled induction motor[J].Electric Machines and Control,2001,5(1):20-23.
[14]祁强,张广溢.异步电动机转子电阻斩波调速系统的特性分析与仿真研究[J].电机与控制学报.2005,9(1):45-47.QI Qiang,ZHANG Guangyi.Performance analysis and simulation study of the rotor chopper controlled induction motor[J].Electric Machines and Control,2005,977(1):45-47.
[15]彭清祥.绕线异步电机转子电流斩波调速系统设计[D].长沙:中南大学,2008.