Improved Approximate Gradient Method in MPPT Control of Photovoltaic Generation System

DOI

10.2991/isrme-15.2015.471How to use a DOI?

Keywords

approximate gradient; MPPT; photovoltaic system

Abstract

Approximate gradient method is improved for the maximum power point tracking (MPPT) of photovoltaic generation system. The improvements are implemented by: (1) applying constant voltage tracking method to narrow the search range when external conditions change drastically; (2) adding constraint conditions to optimize the power curve. Based on the simulation of the original and improved approximate gradient methods, it is shown that the improved method ameliorates the tracking performance by avoiding the defeats as “divide by zero error”, tracking failure and oscillation.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhou Chen
AU  - Ziqiang Xi
AU  - Bin Lu
PY  - 2015/04
DA  - 2015/04
TI  - Improved Approximate Gradient Method in MPPT Control of Photovoltaic Generation System
BT  - Proceedings of the 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering
PB  - Atlantis Press
SP  - 2276
EP  - 2280
SN  - 1951-6851
UR  - https://doi.org/10.2991/isrme-15.2015.471
DO  - 10.2991/isrme-15.2015.471
ID  - Chen2015/04
ER  -