To solve the low efficiency of electric excitation claw-pole synchronous generator（EECPSG） and regulate the magnetic field of permanent magnet （PM） claw-pole synchronous generator（PMCPSG）, a novel hybrid excitat...To solve the low efficiency of electric excitation claw-pole synchronous generator（EECPSG） and regulate the magnetic field of permanent magnet （PM） claw-pole synchronous generator（PMCPSG）, a novel hybrid excitation claw-pole synchronous generator （HECPSG）with magnetic circuit series connection is proposed. Through the simulation study on the generator using the calculation method for magnetic circuit and 3-D finite element method （FEA）, the appropriate magnet thickness and the number of pole-pairs for the proposed generator are determined. Its off-loading characteristics, load characteristics, and regulation behaviors are investigated. The study shows that the appropriate number of pole-pairs in HECPSG with series magnetic circuits is two, and there exists an optimum magnet thickness. Compared to EECPSG, HECPSG realizes dual-directional control to the excitation current. Moreover, the generator can adjust the output voltage and keep the output voltage stable in a broad load range. Under the condition of same parametes, the motor has higer air-gap flux density and power density.展开更多
针对切向聚磁型并联结构混合励磁电机(TMPS-HESM)随着励磁电流增加导致齿槽转矩剧增容易引发电机振动噪声的问题,根据齿槽转矩的产生原理,探讨改变转子极靴宽度、磁极偏心距和气隙长度削弱电机齿槽转矩的可行性。借助Maxwell and Workbe...针对切向聚磁型并联结构混合励磁电机(TMPS-HESM)随着励磁电流增加导致齿槽转矩剧增容易引发电机振动噪声的问题,根据齿槽转矩的产生原理,探讨改变转子极靴宽度、磁极偏心距和气隙长度削弱电机齿槽转矩的可行性。借助Maxwell and Workbench and Optislong联合仿真软件建立8极48槽TMPS-HESM模型,运用遗传算法进行全局多目标优化,得到pareto最优解集后使用优劣解距离法(TOPSIS)客观选取最优解。最后对比分析优化前后电机的各项其他性能,结果表明:采用遗传算法和TOPSIS法对电机参数进行优化,能提升电机多目标优化效率,不仅可解决混合励磁电机励磁电流增加导致齿槽转矩剧增的问题,还能有效削弱电机转矩脉动,提升电机平均转矩,在减少电机的振动噪声和提高电机输出转矩方面均取得改善。展开更多
以一台2.5 k W切向聚磁型并联结构混合励磁电机为研究对象,研究切向聚磁型并联结构混合励磁电机磁极偏心对电机振动噪声的影响。根据电机电磁振动噪声相关理论,建立磁极偏心切向聚磁型并联结构混合励磁电机模型,采用磁极偏心优化其气隙...以一台2.5 k W切向聚磁型并联结构混合励磁电机为研究对象,研究切向聚磁型并联结构混合励磁电机磁极偏心对电机振动噪声的影响。根据电机电磁振动噪声相关理论,建立磁极偏心切向聚磁型并联结构混合励磁电机模型,采用磁极偏心优化其气隙磁密畸变率和电磁噪声,分析该电机在优化前后径向电磁力的阶次、频率特征,并对该电机的定子进行模态分析,利用ANSYS Workbench仿真平台搭建电机振动噪声耦合模型,计算优化前后电机的振动响应与噪声变化。结果表明:采用磁极偏心能有效优化电机气隙磁密和电磁力密度,气隙磁密谐波畸变率显著下降,电磁力(16,4 f1)分量幅值减小74%,从而可达到抑制电机振动噪声的目的。展开更多
基金Supported by the National Natural Science Foundation of China(50337030)the Natural Science Foundation of Shanghai(08ZR1408600)the Natural Science Foundation of Shanghai Dianji University(08C410)~~
文摘To solve the low efficiency of electric excitation claw-pole synchronous generator（EECPSG） and regulate the magnetic field of permanent magnet （PM） claw-pole synchronous generator（PMCPSG）, a novel hybrid excitation claw-pole synchronous generator （HECPSG）with magnetic circuit series connection is proposed. Through the simulation study on the generator using the calculation method for magnetic circuit and 3-D finite element method （FEA）, the appropriate magnet thickness and the number of pole-pairs for the proposed generator are determined. Its off-loading characteristics, load characteristics, and regulation behaviors are investigated. The study shows that the appropriate number of pole-pairs in HECPSG with series magnetic circuits is two, and there exists an optimum magnet thickness. Compared to EECPSG, HECPSG realizes dual-directional control to the excitation current. Moreover, the generator can adjust the output voltage and keep the output voltage stable in a broad load range. Under the condition of same parametes, the motor has higer air-gap flux density and power density.
文摘针对切向聚磁型并联结构混合励磁电机(TMPS-HESM)随着励磁电流增加导致齿槽转矩剧增容易引发电机振动噪声的问题,根据齿槽转矩的产生原理,探讨改变转子极靴宽度、磁极偏心距和气隙长度削弱电机齿槽转矩的可行性。借助Maxwell and Workbench and Optislong联合仿真软件建立8极48槽TMPS-HESM模型,运用遗传算法进行全局多目标优化,得到pareto最优解集后使用优劣解距离法(TOPSIS)客观选取最优解。最后对比分析优化前后电机的各项其他性能,结果表明:采用遗传算法和TOPSIS法对电机参数进行优化,能提升电机多目标优化效率,不仅可解决混合励磁电机励磁电流增加导致齿槽转矩剧增的问题,还能有效削弱电机转矩脉动,提升电机平均转矩,在减少电机的振动噪声和提高电机输出转矩方面均取得改善。
文摘以一台2.5 k W切向聚磁型并联结构混合励磁电机为研究对象,研究切向聚磁型并联结构混合励磁电机磁极偏心对电机振动噪声的影响。根据电机电磁振动噪声相关理论,建立磁极偏心切向聚磁型并联结构混合励磁电机模型,采用磁极偏心优化其气隙磁密畸变率和电磁噪声,分析该电机在优化前后径向电磁力的阶次、频率特征,并对该电机的定子进行模态分析,利用ANSYS Workbench仿真平台搭建电机振动噪声耦合模型,计算优化前后电机的振动响应与噪声变化。结果表明:采用磁极偏心能有效优化电机气隙磁密和电磁力密度,气隙磁密谐波畸变率显著下降,电磁力(16,4 f1)分量幅值减小74%,从而可达到抑制电机振动噪声的目的。
