Title

High Efficiency Dual-Mode Current Modulation Method For Low-Power Dc/Ac Inverters

Keywords

BCM; current modulation; three-phase microinverter; ZVS

Abstract

Boundary conduction mode (BCM) zero voltage switching (ZVS) current control is a promising soft switching method for microinverter applications. In this letter, different BCM ZVS current control modulation schemes are compared based on power losses breakdown, switching frequency range, and current quality. Compared to continuous conduction mode current control, BCM ZVS control decreases MOSFET switching losses and filter inductor conduction losses but increases MOSFET conduction losses and inductor core losses. Based on the loss analysis, a dual-mode current modulation method combining ZVS and zero current switching schemes is proposed to improve the efficiency of the microinverter. The experimental results show that by using this proposed current modulation scheme, higher efficiency of 0.5% can be achieved with no additional cost for a 400-W three-phase microinverter. © 2013 IEEE.

Publication Date

6-1-2014

Publication Title

IEEE Transactions on Power Electronics

Volume

29

Issue

6

Number of Pages

2638-2642

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TPEL.2013.2285624

Socpus ID

84893917869 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84893917869

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