Abstract
Bidirectional ac-dc wireless power transfer (WPT) converters are widely used in grid-connected electric vehicle systems for grid-to-vehicle and vehicle-to-grid applications. They usually apply a two-stage topology with a bidirectional ac-dc power factor correction 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 article 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 |
Pages (from-to) | 10029-10044 |
Number of pages | 16 |
Journal | IEEE Transactions on Power Electronics |
Volume | 37 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2022 |
Keywords
- AC-DC
- bidirectional
- integrated power stage
- wireless power transfer (WPT)
ASJC Scopus subject areas
- Electrical and Electronic Engineering