Partially Isolated Single-Magnetic Multiport Converter Based on Integration of Series-Resonant Converter and Bidirectional PWM Converter

• Published in: IEEE transactions on power electronics Vol. 33; no. 11; pp. 9575 - 9587
• Main Authors: Uno, Masatoshi, Oyama, Rina, Sugiyama, Kazuki
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.11.2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Batteries; Complexity; Converters; Electrical measurement; Frequency modulation; Inductors; Integration; Magnetic materials; multiport converter (MPC); Photonic crystals; Power sources; Pulse duration; Pulse duration modulation; Pulse frequency modulation; Pulse width modulation; pulse width modulation (PWM) converter; Pulse width modulation converters; Rechargeable batteries; series-resonant converter (SRC); Switches; Transient response
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2018.2794332

Recent power systems, such as renewable energy systems consisting of solar panels and rechargeable batteries, contain multiple power sources and need multiple converters in proportion to the number of power sources, resulting in increased system complexity and cost. This paper proposes a multiport converter (MPC) integrating a bidirectional PWM converter and series-resonant converter. Not only is the switch count halved with the proposed MPC, but also magnetic components can be integrated, reducing the circuit complexity and volume. A 150-W prototype of the proposed MPC was built for the experimental verification. The measured voltage conversion characteristics and transient responses demonstrated that the proposed MPC could control load and battery voltages independently by pulse width modulation and pulse frequency modulation controls, respectively.