【摘要】 针对笼型无刷双馈电机的效率较低的问题进行研究,电机效率与转子磁场极数转换效率和转子漏阻抗参数相关,对转子结构进行优化设计是提高电机性能的根本途径。在分析现有笼型转子的特性基础上,提出等距笼型的新转子结构。新转子具有公共端环和独立叠式转子导体回路,每个转子导体回路的节距相等。利用ANSYS软件对不同笼型转子结构的磁场进行有限元分析,计算出转子磁动势谐波含量和转子漏阻抗参数。结果表明,新转子结构无刷双馈电机的转子电阻和漏电抗小,与定子功率绕组和控制绕组极数相对应的转子谐波磁场含量高,其他高次谐波磁场含量低。更多还原

【Abstract】 The problem of inefficiency of brushless douldy fed machine(BDFM) with cage rotor is researched.The efficiency depends on efficiency of rotor magnetic field pole-number conversion and leakage impedance of rotor.Optimal design of BDFM structure is the original approach to improve performance.Based on analysis of characteristic of BDFM with cage rotor,a new rotor structure—equidistant cage rotor is presented.The novel rotor has communal end link and independent cascade rotor conductor loop.The pitch of the loops is equal.It is done that finite element analysis of different rotor structures by ANSYS.Rotor magnetomotive force harmonic content and leakage impedance parameter are calculated.The result shows that the rotor resistance and leakage impedance of BDFM with new rotor structure are small,and rotor harmonic magnetic field contents,corresponding with poles of stator power windings and control windings,are high;the other high-order harmonic magnetic field contents are low.更多还原