Posted April 4, 20231 yr Mecer 5KW Pure Sine Wave Inverter With 2400W PWM Controller Hi, Please help. I bought this above inverter. the issue i am having is that the Voltage from the solar panel when measured with a multi meter is 90v but on the inverter PV voltage is only shows 51v. could there be a problem with the PWM controller? Why am i not getting the full voltage? The amps have also been measured with a DC amp Meter and that seems fine. so because i am not getting the full voltage the watts i am getting from my solar panels is very less. voltage x amps = watts 51 x 20amp ( depending on sun) = 1020watts 90 x 20amp ( depending on sun) = 1800 watts is what i should be getting. I will really apricate your help.
April 4, 20231 yr I'm afraid that's just how PWM charge controllers work. See the link below for more info. What Are the Differences Between MPPT vs. PWM Charge Controllers? (ecoflow.com) Key paragraph is: PWM controllers can only utilize the voltage that matches your battery bank. For example, most PWM controllers are integrated with a 12V battery system. If your solar array is providing 18V, then that extra 6V of power will be wasted.
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