The PWM solar charge controller functions as a voltage regulator, carrying the energy from the solar panels to the batteries at the correct voltage level. They help prevent the batteries from overcharging, short-circuiting, and block reverse currents.
Hinergy offers various types of PWM and MPPT solar charge controllers, available in different amperages to suit your applications. Pulse Width Modulation (PWM) charge controllers are good low-cost solutions for smaller systems that run on a parallel connection. Maximum Power Point Technology (MPPT) charge controllers maximize a panel's output under all weather conditions and work best with a series connection.
PWM Solar Charge Controller:A PWM (Pulse Width Modulated) solar charge controller is the traditional style. They are robust, inexpensive and widely used in solar panel applications. PWM shunt controllers are used less often and mostly in applications where electrical interference is an issue.The basic formula for sizing a solar charge controller is to take the short circuit current (Isc) of the array and multiply it by 1.56. Be sure that the solar controller you select can handle at least that many amps.
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