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Energies 2017, 10(5), 697; doi:10.3390/en10050697

A High-Power-Density Single-Phase Rectifier Based on Three-Level Neutral-Point Clamped Circuits

1
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
2
State Grid Suining Power Supply Company, Suining 629000, China
3
Monolithic Power Systems, Shenzhen 518000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Jose Alves da Silva
Received: 19 March 2017 / Revised: 5 May 2017 / Accepted: 9 May 2017 / Published: 16 May 2017
(This article belongs to the Special Issue Power Electronics in Power Quality)
View Full-Text   |   Download PDF [5399 KB, uploaded 16 May 2017]   |  

Abstract

A single-phase three-level converter is suitable for medium-power applications, with an interface voltage that is higher than that of a traditional two-level configuration. The three-level neutral-point clamped converter is adopted using four switches in each bridge arm, which, compared to a two-level rectifier, leads to less voltage stress, a lower switching frequency, and switching loss on switches. The transient current control strategy is designed to control the active power. The single-phase space vector pulse width modulation (SVPWM) with a voltage balance strategy is designed to solve the neutral point voltage fluctuation problem and keep the dc-link voltage stable. A 1.3 kW high-power-density prototype based on SiC MOSFET was built and tested. The experimental results verified the high performance of steady-state and dynamic responses. View Full-Text
Keywords: single-phase rectifier; three-level neutral-point clamped converter; SiC MOSFET; space vector pulse width modulation single-phase rectifier; three-level neutral-point clamped converter; SiC MOSFET; space vector pulse width modulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhou, T.; Shu, Z.; Lin, H.; Luo, D.; Chen, Y.; Guo, X. A High-Power-Density Single-Phase Rectifier Based on Three-Level Neutral-Point Clamped Circuits. Energies 2017, 10, 697.

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