By Topic

An adaptive, linear-line approximation method and its VLSI implementation for maximum power control of photovoltaic system

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Pin-Chun Chou ; Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Hsin Chen

Photovoltaic (PV) systems are renewable sources whose operating voltage and current are nonlinearly dependent on the temperature and sunlight intensity. Therefore, maximum power point (MPP) tracking is important for extracting as much power as possible from PV arrays. The Linear-line Approximation Method (LLAM) is able to converge to the MPP quickly regardless of the changes of sunlight intensity. However, the slope of the linear line method becomes non-optimal as the temperature changes, causing the PV systems to leave its MPP. This paper proposes a modified LLAM whose line slope can adapt automatically in response to temperature changes, maintaining an optimal MPP control. After verifying the feasibility and capability of the proposed algorithm by simulation, the proposed algorithm is further implemented as a microsystem in VLSI (Very Large Scale Integration). The application-specific VLSI is expected to achieve higher control efficiency and lower power consumption.

Published in:

Control and Modeling for Power Electronics (COMPEL), 2012 IEEE 13th Workshop on

Date of Conference:

10-13 June 2012