SolarMQP - Project Number: MQP-SJB-1A03 Solar Panel Peak...

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Unformatted text preview: Project Number: MQP-SJB-1A03 Solar Panel Peak Power Tracking System A Major Qualifying Project Submitted to the Faculty of WORCESTER POLYTECHNIC INSTITUTE In partial fulfillment of the requirements for the Degree of Bachelor Science March 12, 2003 By ______________________________ Eric Anderson ______________________________ Chris Dohan ______________________________ Aaron Sikora _________________________________ Professor Stephen J. Bitar _________________________________ Professor John A. McNeill 2 Abstract The design of a Maximum Peak Power Tracking (MPPT) controller for a solar photovoltaic battery charging system is proposed utilizing a boost-converter topology. Solar panel voltage and current are continuously monitored by a closed-loop microprocessor based control system, and the duty cycle of the boost converter continuously adjusted to extract maximum power. System testing confirms peak power tracking under changing lighting conditions. Under specific conditions, efficiencies in excess of 90% are shown to be possible. 3 Acknowledgements We would like to thank Professor Stephen J. Bitar and John A. McNeill for their more than helpful contributions over the course of the project. We would also like to thank them for use of the analog lab and all of its equipment. 4 Table of Contents 2.0 Background............................................................................................................................... 8 2.1 Solar Panel Phenomenology................................................................................................. 8 2.1.1 Solar Power Fundamentals ............................................................................................ 8 2.1.2 Efficiency....................................................................................................................... 8 2.1.3 Voltage-Current (V-I) Characteristic........................................................................... 10 2.2 Insolation Levels................................................................................................................. 13 2.3 Charge Controllers.............................................................................................................. 16 2.4 Storage Batteries................................................................................................................. 18 2.5.1 Multiple Panels per MPPT........................................................................................... 20 2.5.2 Individual MPPT per Panel.......................................................................................... 21 2.5.3 The Best Approach ...................................................................................................... 23 3.0 Methodology........................................................................................................................... 24 3.1 System Block Diagram ....................................................................................................... 24 3....
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This note was uploaded on 10/29/2010 for the course FIN 301 taught by Professor Selassie during the Spring '09 term at Oakwood University.

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SolarMQP - Project Number: MQP-SJB-1A03 Solar Panel Peak...

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