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The basic operation of a solar cell, module or photovoltaic generator under different irradiation and temperature conditions is characterized by its I-V characteristic curve. Only the experimental measurement of the I-V curve allows us to know the electrical parameters of a photovoltaic cell, module or array. This measure provides very relevant information for the design, installation and maintenance...
This paper gives a general approach to the development of duty cycle sweep (DCS) in fixed switching frequency pulse width modulated (PWM) strategies based on microcontroller. The flexibility of the PWM signal generated is characterized by: 1) Fixed duty cycle or variable between 0% and 100%. 2) Duty cycle sweep in both directions: increase from 0% to 100% and decrease from 100% to 0%.3) duty cycle...
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