Title :
Design and Implementation of a Novel Photovoltaic Charge System with Maximum Power Point Tracking
Author :
Han, Junliang ; Xu, Haibo ; Song, Qinghua ; Zheng, Shaozhong
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A novel circuit topology for photovoltaic charge system with high efficiency and complete protection functions was presented in the paper. A modified P&O algorithm for better tracking performance with adaptive step length adjustment was proposed. And a comprehensive strategy for maximum power point tracking (MPPT) combined with the Constant Voltage Tracking (CVT) algorithm and the modified adaptive Perturbation and Observation (P&O) algorithm was developed. A prototype was implemented to very the feasibility of the proposed scheme. The experimental results showed that high MPPT accuracy and high power conversion efficiency were achieved under PWM operation mode.
Keywords :
PWM power convertors; maximum power point trackers; photovoltaic power systems; power generation protection; CVT algorithm; MPPT; PWM operation mode; adaptive step length adjustment; circuit topology; constant voltage tracking algorithm; maximum power point tracking; modified adaptive P&O algorithm; modified adaptive perturbation and observation algorithm; photovoltaic charge system; power conversion efficiency; protection function; Algorithm design and analysis; Arrays; Batteries; MOSFET circuits; Photovoltaic systems; Pulse width modulation; Constant Voltage Tracking algorithm; MPPT; Perturbation and Observation algorithm; adaptive step length adjustment; photovoltaic charge system;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control, 2011 First International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-0-7695-4519-6
DOI :
10.1109/IMCCC.2011.58
