Current non-equalization and circulating current suppression method for interleaved parallel inverter

The invention relates to a current non-equalization and circulating current suppression method for interleaved parallel inverters. The method comprises the following steps: step 1, acquiring output phase currents of two inverters by using a current sensor; step 2, the total output after parallel connection being the sum of the output currents of the two inverters; step 3, calculating the current error amount; step 4, obtaining a duty ratio adjustment coefficient of each phase; step 5, obtaining the sum of the high level duty ratios of each phase; step 6, redistributing the high level in each phase between the two converters; and step 7, obtaining a switching sequence of the two parallel inverters. According to the invention, the output high levels of the two inverters can be redistributed, the circulation inside the inverters and between the two inverters can be effectively suppressed, and the quality of the output current of the system can be ensured. 本发明涉及一种交错并联逆变器的电流不均分及环流抑制方法，包括以下步骤：步骤1、利用电流传感器采集两台逆变器的输出相