Method and device for determining number of parallel devices, inverter and medium

The invention discloses a method and device for determining the number of parallel devices, an inverter and a medium. The method is applied to an inverter, and comprises the following steps: receiving phase information of a target inverter; determining first data information of a first inverter in the target inverters in response to matching of the phase information and the current phase information; based on the first data information, determining second data information of a second inverter with inversion output in the first inverter; and determining the number of parallel devices in the inverter system based on the second data information. And performing inverter distinguishing through the phase information, determining and screening out second inverters with inversion output based on the first data information of the distinguished first inverters, and determining the number of the parallel devices through the second data information of the second inverters. The accuracy of determining the number of the de