Optimal Design and Analysis of Single-Stage Flyback PV Microinverter

Abstract

Over the last decades, solar energy systems have aroused much interest due to increased concern for the environment. Photovoltaic (PV) module based electrical energy generation systems present promising solutions to ensure sustainable, abundant, inexhaustible, and environmentally friendly energy. In view of foregoing, the converter used in PV systems is emerging as a major component. Microinverters (MIs) also known as module based type of inverters, which are attached to individual PV modules as an operative interface between PV and utility grid, provide an efficient, reliable, and cost-effective energy generation possibility. The salient features of MIs can be expressed as lower installation cost, improved energy harvesting by allowing individual maximum power point tracking (MPPT), plug-N-play operation, and improved system efficiency. This paper presents a detailed analysis of modelling and control of the single-phase grid-connected single-stage flyback PV MI. A 200W single-stage flyback MI is investigated with respect to power circuit design and components selection criteria, operation modes, MPPT control, injected grid current control, and grid synchronization. To assess and validate the feasibility of analyzed 200W single-stage flyback MI, a simulation model is constructed by using an electromagnetic transient software package PSCAD/EMTDC.

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Author Information
Özgür Çelik, Adana Science and Technology University, Turkey
Adnan Tan, Çukurova University, Turkey
Kasım Zor, Adana Science and Technology University, Turkey
Ahmet Teke, Çukurova University, Turkey

• Category: ECSEE2018

Posted by James Alexander Gordon

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