A high-performance MPPT algorithm combining advanced three-point weight comparison and temporary stopped running strategy for PV systems

Hwa Dong Liu, Shiue Der Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This paper proposes a new maximum power point tracking (MPPT) control strategy, including a boost converter temporary stopped running (TSR) strategy and an advanced three-point weight comparison method (ATPWC). The proposed ATPWC was used to detect three power points of a photovoltaic (PV) module output, and a microcontroller unit (MCU) was used to calculate the slope of the three power points and to perform MPPT so as to improve the system’s conversion efficiency. The proposed method was successfully applied to an independent solar power generation system, in which the PV module was connected to a boost converter and then connected in series with an inverter to a single-phase 110 VAC/60 Hz output and connected to the power grid. The measured results showed that, in terms of the TSR control strategy, when the system output met a load of 110 Vrms, TSR could reduce switching loss and conduction loss and result in a 10% higher overall system conversion efficiency than that of traditional control. In terms of the MPPT algorithm, actual measurements were carried out under an irradiance level of 100 W/m2∼700 W/m2. Versus traditional hill climbing (HC) algorithm, the efficiency of the proposed ATPWC was better.

Original languageEnglish
Article number20190461
JournalIEICE Electronics Express
Volume16
Issue number18
DOIs
Publication statusPublished - 2019 Aug 30
Externally publishedYes

Keywords

  • Advanced three-point weight comparison method
  • Maximum power point tracking
  • Photovoltaic
  • Temporary stopped running

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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