摘要
由2个空心耦合电感构建的电动汽车无线充电系统进行建模,并且进行了模型分析,研究了影响系统效率和传输功率的参数,推导了输出功率、效率和阻抗的方程。利用空心耦合电感的漏感补偿技术对模型进行优化,该系统由2个空心线圈与谐振电容串联而成,且设置线圈尺寸明显大于线圈之间的距离。甚至在错位的情况下,也能提供一个恰当的耦合系数。该配置允许电动汽车的充电接收装置与电能发送装置间距等于一个典型车辆间隙,且无需精确定位,这使得无线电动汽车充电更加便利。理论分析已通过仿真实验验证。
A wireless charging system for electric vehicles is modeled and analyzed,which consists of two coupled coreless inductors.Parameters that could affect the system efficiency and the transmission power are studied.The equation of the output power,efficiency and impedance is derived.The model is then optimized using the inductance leakage compensation technique of the coreless inductors.In the system,two coreless coils and resonant capacitances are connected in series,and the sizes of the coils are significantly greater than the distance between them.Thus,an appropriate coupling coefficient could be obtained even the coils are out of alignment.The new wireless charging system can be worked when the distance between the receiving equipment and the power transmitting equipment is within a typical vehicle clearance and misalignment is allowed,which makes the wireless charging of electric vehicles much more convenient.Also,the analytical results are verified by simulation experiments.
作者
肖志怀
刘姜涛
邓其军
黄一冲
刘永东
XIAO Zhihuai LIU Jiangtao DENG Qijun HUANG Yichong LIU Yongdong(School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China School of Physics and Mechanical and Electrical Engineering, Hubei University of Education, Wuhan 430205, China Standardization Center of China Electricity Council, Beijing 100761, China)
出处
《水电与新能源》
2017年第7期65-69,共5页
Hydropower and New Energy
基金
国家科技支撑计划资助项目(2015BAG07B00)
国家自然科学基金资助项目(51677139)
关键词
磁耦合谐振
无线充电
电动汽车
建模
magnetically-coupled resonant
wireless charging
electric vehicles
modeling
