University of Tasmania
AUPEC2017_paper_34.pdf (471 kB)

Improving the performance of time invariant maximum power point tracking methods

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conference contribution
posted on 2023-05-23, 13:08 authored by Galligan, H, Sarah LydenSarah Lyden
This paper presents an improved reinitialisation condition for time invariant maximum power point tracking (MPPT) methods used in photovoltaic (PV) systems experiencing partial shading conditions (PSC). Time invariant (MPPT) methods, such as Particle Swarm Optimisation (PSO), overcome the limitations of existing MPPT by tracking the global maximum power point (GMPP) of a PV system operating under PSC. However, due to the time invariant structure of these MPPT methods, they also require a reinitialisation condition to be defined for when a change in irradiance or temperature occurs. Testing was performed using simulations of a model built in Matlab/ Simulink, where the performance of existing and developed conditions was evaluated using test cases with changes in solar irradiance. Limitations of existing conditions were identified and a more robust reinitialisation condition developed. The developed reinitialisation condition used sentry particles to monitor the PV voltage range for changes in the measured power of any sentry. The developed condition had a 96 % rate of successful detection, as compared to as low as 68 % successful detection for existing methods, demonstrating improved performance and robustness.


Publication title

Proceedings from the Australian Universities Power Engineering Conference






School of Engineering


Institute of Electrical and Electronics Engineers

Place of publication

United States

Event title

Australasian Universities Power Engineering Conference

Event Venue

Melbourne, Australia

Date of Event (Start Date)


Date of Event (End Date)


Rights statement

Copyright 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Repository Status

  • Open

Socio-economic Objectives

Solar-photovoltaic energy