The cost of solar cells is very high, accounting for more than 60% of the total cost of solar street lamps. Improving the utilization rate and charging efficiency of solar cells can make more effective use of solar energy and keep the batteries in good working condition. The PWM charging method can gradually reduce the …
Pulse Width Modulation (PWM) three-stage charge controlle Read More »
Parallel type charge and discharge controller The basic circuit principle of the parallel type (also called bypass type) charge and discharge controller is shown in Figure 1. The switching device T1 in the charging circuit of the parallel charge and discharge controller is connected in parallel to the output end of the solar cell array. When …
Parallel and series charge and discharge controllers Read More »
Photovoltaic charge and discharge controllers can be basically divided into six types: parallel type, series type, pulse width modulation (PWM) type, multi-channel controller, intelligent type and maximum power tracking type. 1. Parallel controller When the battery is fully charged, the output of the photovoltaic array is shunted to a parallel resistor or power module using …