MPPT controller of photovoltaic component and photovoltaic component system

The utility model discloses an MPPT (maximum power point tracking) controller of a photovoltaic component and a photovoltaic component system provided with the controller. The MPPT controller comprises a signal acquisition part used for acquiring voltage signals and current signals, an ADC (analog to digital converter) used for converting analog signals to digital signals, an MCU (single chip microcomputer) (23), a switch tube and a DC-DC network. By using the MPPT controller disclosed by the utility model, the photovoltaic component system provided with the controller can track the maximum power point accurately, timely and effectively, so that the power generation efficiency of the photovoltaic component is improved.