99% Efficient Isolated Three-Phase Matrix-Type DAB Buck–Boost PFC Rectifier
Abstract
Three-phase power factor correction rectifiers are an essential area of power electronics, supplying a direct current load with tens of kilowatts, or more, from the public three-phase mains and achieving sinusoidal input currents. In many applications, isolation is required between the mains and the load, for example, due to safety reasons or different grounding schemes. This paper describes the modulation, design, and realization of a buck-boost-type, unity-power-factor, isolated matrix-type, dual-active-bridge, three-phase rectifier. It uses a circuit similar to a conventional dual-active-bridge converter, but employs a direct matrix converter to connect the high-frequency transformer's primary winding to the mains. A soft-switching modulation scheme is proposed and comprehensively analyzed, deriving closed-form solutions and numerical optimization problems to calculate switching times that achieve minimal conduction losses. Based on this analysis, the design of an 8-kW 400-V rms three-phase ac to 400-V dc prototype is discussed, striving for the highest possible efficiency. Using 900-V SiC MOSFETs and a transformer with an integrated inductor, a power density of 4 kW · dm-3(66 W · in-3) is achieved. Measurement results confirm an ultrahigh full-power efficiency of 99.0% at nominal operating conditions and 98.7% at 10% lower input voltage.
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The efficiency of the converter in [114] when only 10% of input voltage is applied decreases to 98.7%.
“Efficiency when only 10% of input voltage is applied decreases and becomes 98.7%.”
From On-Board Chargers for Electric Vehicles: A Comprehensive Performance and Efficiency Review (2024) · cites this paper as [114]
ETH Zurich in [114] proposed a single-stage OBC with a power rating of 8 kW, charging a 400 V battery with a peak efficiency of 99%.
“ETH Zurich in [114] proposed a single-stage OBC which has a power rating of 8 kW.The configuration used by the converter is an isolated matrix dual active bridge type three-phase rectifier (3P-IMDAB).A 400 V battery is being charged with a peak efficiency of 99%.”
From On-Board Chargers for Electric Vehicles: A Comprehensive Performance and Efficiency Review (2024) · cites this paper as [114]
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On-Board Chargers for Electric Vehicles: A Comprehensive Performance and Efficiency Review
Dar, A. R., Haque, A., Khan, M. A., Kurukuru, V. S. B., & Mehfuz, S. (2024) · Energies · doi:10.3390/en17184534 · Cited by 45 · see citing works
“As discussed in the previous Section, in [114], a converter architecture with single-stage operation having an efficiency of almost 99% has been demonstrated.”
- Authors
- Schrittwieser, L., Leibl, M., & Kolar, J. W.
- Affiliations
- ETH Zurich (CH)
- Venue
- IEEE Transactions on Power Electronics
- Published
- 2020-01
- Volume
- 35
- Issue
- 1
- Pages
- 138-157
- ISSN
- 0885-8993 (ISSN-L)
- 1941-0107
- OpenAlex
- W2943076125
- Cited by
- 169
- References
- 49
- Citations by year
- 2026: 27 · 2025: 36 · 2024: 22 · 2023: 33 · 2022: 17 · 2021: 20 · 2020: 13 · 2019: 1
- FWCI
- 4.58
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- IEEE Transactions on Power Electronics (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Multilevel Inverters and Converters
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Keywords
- three-phase power factor correction, dual active bridge converter, matrix converter, soft switching, switching time optimization, conduction losses, SiC MOSFET, power density, high-frequency transformer, unity power factor
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