Abstract
In this paper, to solve the hard-switching operation problem and the lack of existing a bidirectional power flow path from output to the energy storage device of the conventional three-port converter, a new soft-switched bidirectional multi-port converter is proposed. A large number of switches, different power flow paths which vary in each operating mode, and changing the outputs and their power levels are some of the challenges to provide soft-switching conditions in multi-port converters. In the proposed converter, by changing the topology of the conventional three-port converter, the bidirectional power exchangeability between ports is provided. Moreover, a soft-switching cell is added, which can operate independently from the output power levels. Less number of components with low volume is one of the important features of this multi-port converter. Due to the soft-switching operation of the proposed converter, the size of passive components and heat-sink is reduced. In addition, by the use of coupled inductors in the soft-switching cell, only one magnetic core is used and thus, single-stage power conversion is achieved and conduction loss is reduced. In this paper, the converter operating modes are presented, and design considerations are discussed. Finally, a 200 W-200 V prototype is implemented, and the theoretical analysis is validated by the experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 107079-107094 |
| Number of pages | 16 |
| Journal | IEEE Access |
| Volume | 9 |
| DOIs | |
| Publication status | Published - 2021 |
| Publication type | A1 Journal article-refereed |
Keywords
- dc-dc converter
- electric vehicle
- hybrid power systems
- Multi-port converter
- soft-switching
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- Computer Science(all)
- Materials Science(all)
- Engineering(all)