Performance evaluation of constant current and constant voltage charge control modes of an inductive power transfer circuit with double-sided inductor-capacitor-capacitor and inductor-capacitor/series compensations for electrical vehicle battery charge applications
Restricted accessResearch articleFirst published online May, 2021
Performance evaluation of constant current and constant voltage charge control modes of an inductive power transfer circuit with double-sided inductor-capacitor-capacitor and inductor-capacitor/series compensations for electrical vehicle battery charge applications
For electric vehicle (EV) battery chargers, inductive power transfer (IPT) has become popular day by day due to its features such as being safe, comfortable and weather proof. The constant current (CC) and the constant voltage (CV) charge control modes are important for high-efficiency charging and long-life use of Lithium-ion (Li-ion) batteries commonly used in EVs. However, IPT method requires a wide range of operating frequency in order to provide CC/CV charge control modes. In IPT applications, CC and CV charge control modes are mainly achieved with dc-dc circuits using compensation networks at the transmitter and receiver sides. In this study, performances of inductor-capacitor/series compensation and double-sided inductor-capacitor-capacitor compensation topologies are evaluated based on CC/CV charge control modes. The analytical evaluation is presented in terms of voltage and current regulations during the entire charge control period. Finally, presented analytical evaluation is confirmed with ANSYS software providing field-electric common simulation to predict real response of compensation topologies. In the simulation work, both compensation topologies are operated for the maximum 2.5 kW output power and at the 250 V-450 V output voltage range.
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