The Design Of Wind,Solar Complementary Charging Controller
ABSTRACT
The control system using single-chip microcomputer and matches the tablets in frequency-field collected signals battery voltage switches and control, ADC0804 converter for battery voltage using real-time voltage signal detection and transformation; AD converter first will the collected battery voltage signal analog conversion into 0-255 the digital quantity, and then sent to single-chip 89C52 89C52 will signal processing, the two ways to display on all digital pipe 0, another way signal whois 25.5 V 89C52 use comparison procedures for the voltage signal size than, for example, we set a cap of recharging voltage 13.5 V, discharging voltage limit set to 11.5 V, when 89C52 detect store battery voltage when the values greater than 13.5 V, 89C52 control charging circuit for battery recharging reservoir stop, charging circuit disconnect, charging indicator destroy; When 89C52 detection to store the battery voltage signal, less than 11.5 V 89C52 control store in load circuit power battery stop, load circuit disconnect, load working lights out; In all the work process, digital tube always display the current voltage data values.
SCM system has applied the characteristics of nimble, use convenient, in the core components of the microcomputer as intelligent control system is also have convenient use, can upgrade etc. Characteristics. For battery and discharge in the voltage is must by monitoring on the premise of the battery, unable to control charging, also cannot pass discharge, currently high-power charger generally no charging protection device, during charging if the battery charging and discharging will cause damage to the battery, when the battery voltage is more than a certain value is to stop charging, less than certain value to stop discharging, such as the highest voltage 12V lead-acid batteries cannot exceed 13.5 V, minimum voltage cannot under11.5 V, etc. The system also can serve as other voltage detection system and wide application, low cost, safety and reliability, ensure the normal safety work battery premise, can safely and effectively use solar and wind power battery charging, to realize the natural energy collection, collection of electricity in the premise of battery normal work, just can be applied to life, also can according to life needs, directly, or through the inverter using conventional utility, a 220V power supply for everyday household appliances.
