Efficient Maximum Power Point Tracking for a Distributed PV System under Rapidly Changing Environmental Conditions

Yohan Hong, Son N. Pham, Taegeun Yoo, Kookbyung Chae, Kwang Hyun Baek, Yong Sin Kim

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

When conventional maximum power point tracking (MPPT) techniques are required to operate fast under rapidly changing environmental conditions, a large power loss can be caused by slow tracking speed, output power fluctuation, or additionally required ad hoc parameters. This paper proposes a fast and efficient MPPT technique that minimizes the power loss with the adaptively binary-weighted step (ABWS) followed by the monotonically decreased step (MDS) without causing output power fluctuation or requiring additional ad hoc parameter. The proposed MPPT system for a photovoltaic (PV) module is implemented by a boost converter with a microcontroller unit. The theoretical analysis and the simulation results show that the proposed MPPT provides fast and accurate tracking under rapidly changing environmental conditions. The experimental results based on a distributed PV system demonstrate that the proposed MPPT technique is superior to the conventional perturb and observe (P&O) technique, which reduces the tracking time and the overall power loss by up to 82.95%, 91.51% and 82.46%, 97.71% for two PV modules, respectively.

Original languageEnglish
Article number6884809
Pages (from-to)4209-4218
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume30
Issue number8
DOIs
Publication statusPublished - 2015

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Keywords

  • Binary-weighted step
  • distributed system
  • environmental conditions
  • maximum power point (MPP)
  • photovoltaic (PV) system

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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