高速电主轴电机转子的建模及优化
|
摘要
高速永磁无刷直流电机其效率高,功率密度大而广泛运用在超精密加工机床电主轴中。针对特定尺寸结构的电主轴需配套设计高速电机的定转子,在分析传统电机设计磁路法的基础上,提出一种基于特定定子尺寸的永磁转子建模方法。运用该方法设计了一台额定功率1.1 kW,额定转速200000 r/min的高速磨床电主轴用永磁无刷直流电机的转子,并以高效率、低转矩波动率和低速度波动率为目标优化永磁体的极弧系数,给出最优极弧系数。该研究可以为同类主轴电机转子设计提供依据。
High-speed permanent magnet brushless DC motor is widely used in the spindle of ultra-precision machine tools because of its high efficiency and high power density. In order to design the stator and rotor of high-speed motor for the motorized spindle with specific size structure,a permanent magnet rotor modeling method based on specific stator size is proposed based on the analysis of the traditional magnetic circuit method for motor design. A rotor of permanent magnet brushless DC motor for motorized spindle of high speed grinder with rated power of 1.1 k W and rated speed of 200000 rpm is designed by this method. With high efficiency,low torque volatility and low speed volatility targets,the polar arc coefficient of the permanent magnet is optimized and the optimal polar arc coefficient is given. This study provides a method for the design of the same type of motor rotor.
High-speed permanent magnet brushless DC motor is widely used in the spindle of ultra-precision machine tools because of its high efficiency and high power density. In order to design the stator and rotor of high-speed motor for the motorized spindle with specific size structure,a permanent magnet rotor modeling method based on specific stator size is proposed based on the analysis of the traditional magnetic circuit method for motor design. A rotor of permanent magnet brushless DC motor for motorized spindle of high speed grinder with rated power of 1.1 k W and rated speed of 200000 rpm is designed by this method. With high efficiency,low torque volatility and low speed volatility targets,the polar arc coefficient of the permanent magnet is optimized and the optimal polar arc coefficient is given. This study provides a method for the design of the same type of motor rotor.
引文
[1] Hwang C C,Hung S S,Liu C T,et al. Optimal design of a high speed SPM motor for machine tool applications[J].IEEE Transactions on Magnetics,2013,50(1):1-4.
[2]陈少华,刘刚,郑世强,等.高速永磁无刷直流电机无位置全转速控制策略[J].电机与控制学报,2017,21(4):105-114.
[3]张忠明,邓智泉,孙权贵,等.铜屏蔽层对高速永磁无刷直流电机转子涡流损耗和应力的影响分析[J].中国电机工程学报,2018,38(8):2476-2486,2557.
[4]仇志坚,李琛,周晓燕,等.表贴式永磁电机转子偏心空载气隙磁场解析[J].电工技术学报,2013,28(3):114-121.
[5]王继强,王凤翔,鲍文博,等.高速永磁电机转子设计与强度分析[J].中国电机工程学报,2005,25(15):140-145.
[6]张冉,王秀和,乔东伟.极弧系数选择对永磁无刷直流电机激振力波的影响[J].中国电机工程学报,2010,30(21):79-85.
[7]董剑宁,黄允凯,金龙,等.高速永磁电机设计与分析技术综述[J].中国电机工程学报,2014,34(27):4640-4653.
[8] Boglietti A,Lazzari M,Pastorelli M. A simplified method for the iron losses prediction in soft magnetic materials with arbitrary voltage supply[C]//Conference Record-IAS Annual Meeting.[s.l.]:IEEE Industry Applications Society,2000,1(2):269-276.
[9]王继强,王凤翔,鲍文博,等.高速永磁电机转子设计与强度分析[J].中国电机工程学报,2005,25(15):140-145.
[10]王凤翔.高速电机的设计特点及相关技术研究[J].沈阳:沈阳工业大学学报,2006,28(3):258-264.
[2]陈少华,刘刚,郑世强,等.高速永磁无刷直流电机无位置全转速控制策略[J].电机与控制学报,2017,21(4):105-114.
[3]张忠明,邓智泉,孙权贵,等.铜屏蔽层对高速永磁无刷直流电机转子涡流损耗和应力的影响分析[J].中国电机工程学报,2018,38(8):2476-2486,2557.
[4]仇志坚,李琛,周晓燕,等.表贴式永磁电机转子偏心空载气隙磁场解析[J].电工技术学报,2013,28(3):114-121.
[5]王继强,王凤翔,鲍文博,等.高速永磁电机转子设计与强度分析[J].中国电机工程学报,2005,25(15):140-145.
[6]张冉,王秀和,乔东伟.极弧系数选择对永磁无刷直流电机激振力波的影响[J].中国电机工程学报,2010,30(21):79-85.
[7]董剑宁,黄允凯,金龙,等.高速永磁电机设计与分析技术综述[J].中国电机工程学报,2014,34(27):4640-4653.
[8] Boglietti A,Lazzari M,Pastorelli M. A simplified method for the iron losses prediction in soft magnetic materials with arbitrary voltage supply[C]//Conference Record-IAS Annual Meeting.[s.l.]:IEEE Industry Applications Society,2000,1(2):269-276.
[9]王继强,王凤翔,鲍文博,等.高速永磁电机转子设计与强度分析[J].中国电机工程学报,2005,25(15):140-145.
[10]王凤翔.高速电机的设计特点及相关技术研究[J].沈阳:沈阳工业大学学报,2006,28(3):258-264.