Inverter test system

The embodiment of the utility model discloses an inverter test system. The inverter test system comprises an upper computer, an inverter to be tested, a first AFE rectification unit, an isolation transformer and a second AFE rectification unit. The first AFE rectification unit is used for being connected with an AC voltage source and a to-be-tested inverter. The isolation transformer is used for being connected with a to-be-tested inverter. The second AFE rectification unit is connected with the isolation transformer and is connected with the inverter to be tested; the second AFE rectificationunit is controlled by the upper computer to simulate different loads. And the second AFE rectification unit is used as a feedback load, so that the cyclic reuse of energy is realized, the energy consumption is reduced, and the requirements of contemporary green energy sources are met. Meanwhile, the output current of the second AFE rectification unit can be adjusted and controlled by the upper computer, so that the secon