摘要
针对新能源汽车驱动电机励磁系统中电刷与集电环对整车运行带来安全隐患的问题,提出了一种非接触式同步电机转子励磁的方法,并采用了谐振补偿方法以提高非接触式励磁能量传输效率。研究了非接触式励磁系统的工作原理与系统结构,建立了松耦合变压器的互感模型并分析了松耦合变压器的特性,给出了非接触式励磁电源谐振补偿系统的设计原理,分析了非接触式能量传输系统的传输特性。仿真与实验结果表明:采用串联-串联谐振补偿方式可以对非接触式变压器中漏感所带来的效率损失进行有效的补偿,能够增加变压器副边电流与电压的幅值;当电源工作在完全谐振状态下时,通过谐振补偿可大幅提高非接触式同步电机励磁电源的传输效率。
For the problem that the brush and slip ring of new energy vehicles’ drive motor excitation sys-tem may bring some safe hidden troubles when the car is running, a method of contactless synchronous motor rotor excitation was proposed, and the resonance compensation method was adopted to improve the contactless excitation energy transfer efficiency. The working principle of contactless excitation system was studied, the mutual inductance model of loosely coupled transformer was established and the characteris-tics of the loosely coupled transformer was analyzed, the design principle of contactless excitation power supply resonance compensation system was presented and the transmission properties of the contactless energy transmission system were analyzed. The simulation and experimental results show that： the series-series resonance compensation can effectively compensate the efficiency loss caused by contactless trans-former’s leakage inductance, and increase the current and voltage’ s amplitude of transformer＆#39;s second side. When the power supply works in all resonance condition, through the resonance compensation can significantly increase the transmission efficiency of contactless synchronous motor excitation power supply.
出处
《电机与控制学报》
EI
CSCD
北大核心
2015年第3期45-53,共9页
Electric Machines and Control
基金
国家自然科学基金(E070303)
关键词
无刷直流电机
非接触式励磁
松耦合变压器
谐振补偿
励磁电源
brushless DC motors
contactless excitation
loosely coupled transformers
resonance com-pensation
excitation power supply
