IMPROVED MPPT- CONTROL FOR PWM - BASED DC -DC CONVERTERS WITH AVERAGE CURRENT CONTROL

摘要

A control circuit for a system comprising an input source characterized by a maximum power point, a load, and a DC-DC converter (2, 23) based on pulse width modulation, PWM, that includes input average current control, for conveying the power generated by the input source (1) to the load (3). The control system comprises a digital feedback circuit which generates a first control signal ( VCTRL ) related to the voltage (VIN) and the current (IIN) at the input or the output of the DC-DC converter and an analog feedback circuit which processes the first control signal and the voltage and current values of the input source to generate a second control signal (VPWM) for a PWM generator within the converter.