期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 33, 期 10, 页码 8948-8960出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2780244
关键词
Multicell topology; power factor correction (PFC); predictive control; solid-state transformer; three-level boost (TLB)
资金
- Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy [DE-EE0006521]
- North Carolina State University
- PowerAmerica Institute
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1610074] Funding Source: National Science Foundation
This paper presents a new predictive power-factor-correction (PFC) controller for series-interleaved three-level boost (TLB) converters. Compared to the state-of-the-art TLB PFC controllers, where a two-cycle prediction and a detection of an operating region are necessary, the proposed controller achieves a low total harmonic distortion of the input current by using a single equation to predict the input current in all operating regions of the converter, in just one operating cycle. The average current control is achieved by sampling at the peak of the triangular carrier. The proposed PFC controller significantly reduces the distortion of the input ac current near the zero-crossing points, resulting in a low total harmonic distortion of the input current. The operation of the proposed controller was evaluated, and its stability and robustness to parameter changes was confirmed analytically. The controller operating principles were verified in simulations and validated by experiments on a medium-voltage 50-kW converter prototype.
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