A Bridgeless Modified Boost Converter to Improve Power Factor in EV Battery Charging Applications
Prince Dadhaniya, Mukesh Maurya, Gururaj Mirle Vishwanath
Abstract
The primary objective of this research study is to develop and implement a novel topology aimed at enhancing the electric vehicle power factor at the front end of the battery chargers. To eliminate the necessity for a diode bridge-based converter in the EV battery charger, the proposed design utilizes a bridgeles PFC(Power factor correction) converter, also known as power factor correction. The battery charging is regulated in CV and CC mode, also called constant voltage and constant current, respectively by a DC-DC converter at the output of the proposed PFC. The proposed PFC converter uses a single sensing component which ensures UPF (unity power factor) at the input side and stable DC load voltage, reducing device cost and complexity. The proposed topology achieves the two crucial power factor correction criteria without the need for an inner loop or phase-locked loop, unlike the conventional PFC system. This topology has several advantages, including longer battery life, reduced device stress, improved power quality, fewer harmonics in the input current and lower input/output current ripple.