Carrier-based Generalized Discontinuous PWM Strategy for Single-Phase Three-Legs Active Power Decoupling Converters

Journal Article (2021)
Author(s)

J. Xu (Shanghai Jiao Tong University, Ministry of Education)

Thiago Batista Soeiro (TU Delft - DC systems, Energy conversion & Storage)

Fei Gao (Ministry of Education, Shanghai Jiao Tong University)

Houjun Tang (Ministry of Education, Shanghai Jiao Tong University)

Pavol Bauer (TU Delft - DC systems, Energy conversion & Storage)

Research Group
DC systems, Energy conversion & Storage
Copyright
© 2021 J. Xu, Thiago B. Soeiro, Fei Gao, Houjun Tang, P. Bauer
DOI related publication
https://doi.org/10.1109/TIE.2020.3038099
More Info
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Publication Year
2021
Language
English
Copyright
© 2021 J. Xu, Thiago B. Soeiro, Fei Gao, Houjun Tang, P. Bauer
Research Group
DC systems, Energy conversion & Storage
Issue number
11
Volume number
68
Pages (from-to)
11609-11613
Reuse Rights

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Abstract

Three-legs active power decoupling (APD) converters are widely studied in the single-phase grid-connected systems to enhance the circuit lifetime by creating an alternative path for the typical existing dc-side power pulsating ripple. Therefore, this reduces the requirement of smoothing dc capacitors allowing compact designs even with the implementation of long life metalized film technology. In this article, to allow enhancement of the system power density by improving power conversion efficiency and thus reducing the requirement of thermal management of the semiconductors, a carrier-based generalized discontinuous PWM strategy is proposed. This method detects the converter ac currents and ac reference voltages to determine the optimum clamped duration in each one of the three bridge-legs, which will minimize the converter overall switching losses. The proposed modulation method is analyzed and validated on a PLECS simulation and a 2 kVA single-phase three-legs APD converter.

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