Still struggling with which controller to buy? The controller is too small to match the solar energy? What do MPPT and PWM mean? Don't panic, after reading this article, choosing the right controller is not difficult.
Controller type?
MPPT controller: It can detect the power generation voltage of the solar panel in real time, and track the highest voltage and current value, so that the system can charge the battery with the maximum power output. In the weather with frequent sunshine changes or cloudy weather, it can absorb at least 30% more power than the PWM controller.
PWM controller: that is, pulse width regulation, which refers to controlling the analog circuit with the digital output of the microprocessor. It is a method of digitally encoding the analog signal level. Compared with the MPPT controller, the price is lower.
MPPT and PWM controllers are two technologies, each has its own advantages, the price of PWM is better, and the MPPT controller has high conversion and stronger performance.
How to choose the controller you want?
Here are a few things to consider:
1. Look at the adaptation system. Whether the controller is suitable for 12V/24V/36V/48V system
2. Look at the maximum input voltage of the solar panel. Determine the connection mode of solar panels. After series connection, the voltage increases. Whether it is series connection or series parallel connection, it cannot exceed the maximum input voltage of solar panels controlled.
3. Look at the maximum input power of the solar panel. That is, the maximum input power of the photovoltaic system determines how many solar panels can be installed
4. Look at the battery rated current and battery type
Post time: Nov-22-2022