A Single-Stage Grid-Connected High Gain Buck-Boost Inverter with Maximum Power Point Tracking

Sreekanth Thamballa, N. Lakshminarasamma, Mahesh K. Mishra

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

Converter system that does both dc-dc conversion and dc-ac conversion in a single stage is called a single-stage converter system (SSCS). Compared to a two-stage converter, SSCS is more efficient and compact in size. In this paper, a grid-connected SSCS (GCSS) system for photovoltaic (PV) applications is presented. This GCSS transfers power from PV to grid while tracking maximum power point (MPP) continuously. The proposed system has several desirable features such as low switching loss, high gain, and compact size that makes this GCSS suitable for PV systems, where the PV system output voltage is low and varies with time. Design of the presented GCSS components with necessary equations and derivation of both current control loop and voltage control loop required for operation are given. Proposed GCSS is simulated using MATLAB/SIMULINK. Detailed simulation and experimental results are given to verify the efficacy of the proposed GCSS.

Original languageEnglish (US)
Article number7762107
Pages (from-to)330-339
Number of pages10
JournalIEEE Transactions on Energy Conversion
Volume32
Issue number1
DOIs
StatePublished - Mar 2017
Externally publishedYes

Keywords

  • Buck-boost inverter
  • Single-stage
  • grid connected inverter
  • high gain inverter

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