PHOTOVOLTAIC INVERTER, AND PHOTOVOLTAIC POWER GENERATION SYSTEM FOR SAME

This application provides a photovoltaic inverter, including a DC/AC converter, a positive direct current bus, a negative direct current bus, a drive control circuit, and at least one first unit. A first end of the positive direct current bus and a first end of the negative direct current bus are electrically connected to the DC/AC converter respectively. The first unit includes a first bypass circuit and an isolation circuit. After the drive control circuit is configured to detect that the positive direct current bus and the negative direct current bus are faulty, the drive control circuit is configured to control a first end and a second end of the first bypass circuit to be connected and is configured to control a first end and a second end of the isolation circuit to be disconnected, so that the first photovoltaic module is disconnected from the positive direct current bus or the negative direct current bus, where a time point at which the isolation circuit is disconnected is later than a time point at which the first bypass circuit is connected.