D22.4 - Isolated Single-Phase Onboard Chargers for BEV/PHEV using Active Power Decoupling Technology

Thursday, March 20, 2025

11:30 AM – 1:30 PM ET

Location: Level One, Hall A3

Technical Dialogue Presenter(s)

Yoshiki Amano

Nagoya Institute Of Technology

Presentation Paper

Co-Author(s)

Hiroaki Matsumori, PhD

Nagoya Institute of Technology
Tokyo Metropolitan University
Takashi Kosaka, PhD (he/him/his)

Nagoya Institute of Technology
KN

Kenichi Nagoyashi

Toyota Industries Corporation
Kenichi Watanabe (he/him/his)

Toyota Industries Corporation
KN

Keigo Nishimura

Nagoya Institute of Technology

This paper presents an isolated AC/DC converter used in battery chargers for EV/PHEV using active power decoupling (APD) technology. The proposed circuit integrates an isolated SEPIC circuit and a totem pole PFC circuit and shares some power semiconductor devices to achieve smaller size, higher efficiency, and lower cost. Furthermore, APD control is employed to buffer ripple power with a frequency twice the grid voltage, which is a common issue in bridgeless PFC circuits. In this paper, the principle of operation of the APD is explained, followed by the proposed control configuration. Next, the circuit operation at 1 kW output is verified through experiments.