Highly efficient analog maximum power point tracking (AMPPT) in a photovoltaic system

Chih Yu Yang*, Chun Yu Hsieh, Fu Kuei Feng, Ke-Horng Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


A compact-size analog maximum power point tracking (AMPPT) technique is proposed in this paper for high power efficiency in the photovoltaic (PV) system. Combining existing MPPT approaches, we present a fast and accurate tracking performance. Here, a wide-range current multiplier, which tracks the maximum power point (MPP) in the solar power system, is implemented to detect the power slope condition of the solar panel. Experimental results show that the proposed technique can rapidly track the MPP with a high tracking accuracy of 97.3%. Furthermore, the proposed system can connect to the grid-connected inverter to supply ac power.

Original languageEnglish
Article number6133306
Pages (from-to)1546-1556
Number of pages11
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Issue number7
StatePublished - 23 Jan 2012


  • Analog Maximum Power Point Tracking (AMPPT)
  • grid-connected inverter
  • photovoltaic system
  • tracking efficiency
  • wide-range current multiplier

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