Full-Bridge Current-Fed PV Microinverter With DLFCR Reduction Ability

Wu, Dongchun, Wu, Yunya, Kan, Jiarong, Tang, Yu, Chen, Jian and Jiang, Lin ORCID: 0000-0001-6531-2791 (2020) Full-Bridge Current-Fed PV Microinverter With DLFCR Reduction Ability. IEEE TRANSACTIONS ON POWER ELECTRONICS, 35 (9). pp. 9541-9552.

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Official URL: http://dx.doi.org/10.1109/tpel.2020.2974516

Abstract

A simple current-fed full-bridge converter (CF-FBC) is proposed as a prestage for photovoltaic (PV) microinverter after comparing it with the existing topologies. A modulation strategy based on the CF-FBC with two control freedoms is presented in this article. One freedom is the boost duty cycle, which controls the voltage of the PV panel. The power duty cycle is other freedom, which controls the voltage in the low-voltage side. The operational principle of the proposed CF-FBC is analyzed. A control strategy composing three closed loops is proposed. The regulator parameters are designed based on the small signals model of the converter. The experimental results verify the effectiveness of the proposed converter and its corresponding modulation and control strategy.

Item Type:	Article
Uncontrolled Keywords:	Current-fed full-bridge converter (CF-FBC), double-line-frequency current ripple (DLFCR) reduction, photovoltaic (PV) microinverter, resonant regulator, two control freedoms
Depositing User:	Symplectic Admin
Date Deposited:	27 Feb 2020 17:23
Last Modified:	15 Mar 2024 04:53
DOI:	10.1109/TPEL.2020.2974516
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3076235