To my understanding, most solar controllers use some form of PWM to output a desired current/voltage combination. These seem to often do some sort of DC-DC conversion.
This seems to be wasteful and inefficient however. During the off period of the PWM cycle, the sunlight hitting the PV panel is not used or stored for future use. So a controller using PWM at an 80% duty cycle can only be 80% efficient.
Is my understanding of the situation correct or am I missing something?
During the off period, could the PV power be diverted to charging another LC circuit so it isn't wasted?