Dual Optimization Of An H-Bridge Spwm Microinverter By An Optimal Switching Frequency Tracking Technique

Keywords

Efficiency; H-bridge; Microinverter; Optimization; Switching frequency; Total harmonic distortion

Abstract

The switching frequency is among many design parameters of grid-tied single-phase H-bridge sinusoidal pulse-width modulation (SPWM) microinverters. The selection of the switching frequency is a tradeoff between improving the power quality by reducing the total harmonic distortion (THD) and improving the efficiency by reducing the switching loss. This paper proposes two algorithms to optimize both the power quality and the efficiency of the microinverter by using a frequency tracking technique that requires no hardware modification. The first algorithm tracks the optimal switching frequency for maximum efficiency at a given THD value, while the second maximizes the power quality of the H-bridge micro-inverter by tracking the switching frequency that corresponds to the minimum THD. Experimental verification followed by results evaluation are presented.

Publication Date

12-26-2018

Publication Title

Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

Number of Pages

1182-1186

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/IECON.2018.8591841

Socpus ID

85061542627 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85061542627

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