Development of Automatic Electronic Load Circuit for I-V Curve Measurement of Solar Cells.
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| Title: | Development of Automatic Electronic Load Circuit for I-V Curve Measurement of Solar Cells. |
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| Authors: | Singh, Abhay Kumar f2005135@bits-goa.ac.in, Philip, Abin Thomas f2005067@bits-goa.ac.in, Lal, Mohan1 mohan@mail.nplindia.ernet.in |
| Source: | CURIE Journal. 2009, Vol. 2 Issue 1, p49-56. 8p. 1 Black and White Photograph, 2 Diagrams, 1 Graph. |
| Subjects: | Solar cells, Microcontrollers, Electric circuits, Mechanical loads, Metal oxide semiconductor field-effect transistors, Electrical load |
| Abstract: | This work aims at the automated I-V characterization of solar cells using a power MOSFET based electronic load and a PIC microcontroller based interfacing circuit. The load circuit used is a dynamic electronic load that uses a power MOSFET biased in its linear region. A unity gain Op-amp is used to provide the appropriate voltage to the gate of the MOSFET so that it acts as a varying resistance, driving the current in the circuit. A microcontroller (PIC16F873) based circuit was used to measure the current and voltage levels, digitize it, and transmit them over RS232 cable using the USART protocol. An open-source cross-platform software for plotting the I-V curve was also developed. The program uses the OpenGL API to display primitives. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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