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International Journal of Advanced Engineering, Management and Science

Microcontroller based Constant Voltage Maximum Power Point Tracking for Solar inverter applications

( Vol-1,Issue-9,December 2015 )

Author(s): M. N. Islam, A. Rahman, H. Akhter, M. Begum, Y. Mawla, K. Asaduzzaman, M. Hoq

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Page No: 11-14
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Microcontroller, MPPT, Comparator, CV Algorithm and Solar Inverter.


Microcontroller based maximum power point tracking (MPPT) has been presented for single phase stand alone or grid connected solar inverter applications. The PV array consists of only 12V cell arrangement, thereafter, Discrete Comparator Circuit, The PIC microcontroller P16F676 controls the high power switching devices in the proposed MPPT scheme. The Constant Voltage (CV) algorithm continuously searches for the PV voltages in the rapidly changing weather conditions. The less pin and housing microcontroller does it all for the proposed Constant Voltage (CV) MPPT algorithm. The MPAB Simulation proves a very good agreement with the discrete comparator and switching devices for grid voltage, back-up battery charging and temporary load shedding operation. Therefore, until and unless MPPT voltages are in the operating region, the scheme allows grid voltage and back-up battery charging.

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