Design of a Universal Inductive Charger for Multiple Electric Vehicle Models
Design of a Universal Inductive Charger for Multiple Electric Vehicle Models
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DOI：
10.1109/tpel.2015.2394734
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发表时间：
2015-01
影响因子：
6.7
通讯作者：
Nan Liu;T. Habetler
中科院分区：
文献类型：
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作者：
Nan Liu;T. Habetler
感应功率传输技术已经成为电动汽车（EV）电池充电的流行解决方案。然而，诸如线圈不对准引起的磁耦合变化的问题仍然限制了其实际应用，安全性和稳定性问题。与此同时，不断增长的电动汽车市场要求为各种型号提供通用充电器。介绍了一种电动汽车通用感应充电器的设计过程。所提出的UIC能够自适应地向各种EV提供恒定或可控的充电电压，其中发射线圈与接收线圈之间具有宽范围的变化的磁耦合。通过串联LC电路，在每个充电周期内普遍实现了主侧DC-AC逆变器的零电压开关。采用一种简单而有效的基于频率变化的控制方法，自动选择不同耦合条件下的最佳频率，并在充电过程中调整频率。充电接口的设计也得到了优化，具有更高的效率和功率传输能力。仿真和原型验证了所提出的UIC是准确的，强大的，和适用的。
Inductive power transfer technology has become a popular solution for battery charging of electric vehicles (EVs). However, problems such as varied magnetic coupling caused by coil misalignment still limit its practical applications, by safety and stability issues. Meanwhile, the growing market of EVs asks for a universal charger for various models. This paper presents the design process of a universal inductive charger (UIC) for EVs. The proposed UIC is capable of adaptively providing a constant or controllable charging voltage to various EVs, with a wide range of varied magnetic coupling between the transmitting and receiving coils. With a series-connected LC circuit, zero-voltage switching of the primary dc-ac inverter is universally realized in every charging cycle. A simple yet effective control method based on the frequency variation is used to automatically select the optimal frequency in different coupling conditions and adjust the frequency during the charging process. The design of the charging interface is also optimized with higher efficiency and power-transfer capability. Simulations and prototypes validate that the proposed UIC is accurate, robust, and applicable.