Design and Construction of Microcontroller Based Charge Controller for Photovoltaic Application

Autor: I. G. Saidu, H.N Yahya, M. Momoh, F. Sani, D. O. Akpootu
Rok vydání: 2014
Předmět:
Zdroj: IOSR Journal of Electrical and Electronics Engineering. 9:92-97
ISSN: 2278-1676
2320-3331
DOI: 10.9790/1676-09119297
Popis: This paper describes a microcontroller based charge controller using PWM (pulse width modulation) technique. This PWM technique is employed by the PIC16F877 microcontroller. The microcontroller is to charge a 12V battery using 80W solar panel. The main feature of this charge controller is dusk to dawn operation; it switches "on" the load (the light) at dusk (evening) and switches off at dawn (morning). During day time, the load is disconnected from the battery and the battery is to be recharged with current from the solar panel. When the battery is at full charge (14.7V), the charging current becomes "pulsed" interrupted by the PIC16F877. "Battery Full" will be displayed on the liquid crystal display (LCD). An inbuilt analog to digital converter (ADC) is used to determine voltage level of the battery and the solar panel voltage. The hardware design, software implementation, and flow chart of the program are also discussed in this paper.
Databáze: OpenAIRE