Abstract
Bidirectional AC-DC wireless power transfer (WPT) converters are widely used in grid-connected electric vehicle (EV) systems for grid-to-vehicle (G2V) and vehicle-to-grid (V2G) applications. They usually apply a two-stage topology with a bidirectional AC-DC PFC converter and a bidirectional DC-DC WPT converter. Such a two-stage topology cannot achieve high efficiency and low cost. Recently, single-stage matrix bidirectional AC-DC WPT converters have been proposed. However, the matrix-converter-based topologies do not utilize remarkably lower count of power switches and generate large double line frequency ripple in the DC-side voltage or current. This paper proposes a new single-phase bidirectional AC-DC WPT topology with an integrated power stage to overcome the drawbacks of the matrix-converter-based topologies and retain the advantages of single-stage topologies. Description of the proposed topology with the modulation and control methods, theoretical analysis, and reference design procedure are presented in detail. Finally, a scaled-down laboratory prototype with 500-W output power is implemented with experimental results presented to validate the principle, analysis, and design.
Original language | English |
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Article number | Article number 9729414 |
Journal | IEEE Transactions on Power Electronics |
DOIs | |
Publication status | Accepted/In press - 2022 |
Keywords
- AC-DC
- bidirectional
- Capacitors
- Integrated power stage
- Inverters
- Matrix converters
- Rectifiers
- Resistors
- Topology
- Voltage
- wireless power transfer
ASJC Scopus subject areas
- Electrical and Electronic Engineering