Novel Single-Stage High-Frequency-Isolated Four-Switch Bidirectional Single-Phase PFC Rectifier
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Date
2024
Publication Type
Conference Paper
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Abstract
Power Factor Correction (PFC) rectifiers supplying a dc bus common for several variable speed motor drives should provide galvanic isolation and bidirectional power flow capability. State-of-the-art topologies often suffer from two-stage power conversion and/or high active component count. Therefore, this paper investigates a novel single-phase single-stage high-frequency-isolated PFC rectifier with non-pulsating input current and low active component count, i.e., only four standard power transistors with well-defined blocking voltages. The paper systematically explains the operating principle, and derives the main power component voltage and current stresses resulting in design guidelines for the realization of a 2.5kW prototype system interfacing the European 230V (rms) single-phase ac grid and an isolated 400V dc output, which achieves an estimated nominal efficiency close to 96%. Further, the paper details the closed-loop control strategy and proposes a start-up procedure, which are both verified by means of circuit simulations.
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published
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2024 IEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
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10614031
Publisher
IEEE
Event
25th IEEE Workshop on Control and Modeling for Power Electronics (COMPEL 2024)
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03573 - Kolar, Johann W. (emeritus) / Kolar, Johann W. (emeritus)