Photovoltaic inverter and photovoltaic system

The utility model discloses a photovoltaic inverter and a photovoltaic system, and relates to the technical field of heat dissipation. The photovoltaic inverter comprises a box body, and the box body is provided with an air inlet and an air outlet which are communicated with the outside. The plurality of heat dissipation parts are arranged in the box body close to one side of the air inlet at intervals; the heat dissipation component is arranged above the plurality of heat dissipation components in the air inlet direction; the inversion power module is arranged above the heat dissipation device and is perpendicular to the direction of the air inlet; the boosting power module is arranged above the inversion power module along the air inlet direction; and the boosting inductor is arranged above the boosting power module along the air inlet direction and is positioned on one side close to the air outlet. According to the utility model, the problems that the service life and the reliability of internal components