A Power Factor Corrected Electric Vehicle Battery Charger Using Boost Converter

This paper presents a power factor corrected (PFC) boost converter based half bridge LLC resonant converter (LLC) for electric vehicle battery charging application. The proposed converter utilizes a boost converter as a front end converter operating in continuous inductor conduction mode (CICM) to achieve unity power factor at AC mains, and LLC to facilitate the EV battery charging. The boost converter is operated in pulse width modulation (PWM) at fixed frequency, whereas LLC converter uses pulse frequency modulation (PFM) technique to maintain power delivered to the battery. A 2kW rating prototype of the proposed converter is designed and implemented using TMS320F28035 microcontroller. The performance of proposed converter is presented under various load and line conditions