About the Physics of Processes in Inverters with a Multi-Channel Conversion Path and Summation of Channel Currents Using Transfilters

The class of voltage inverters (in single-phase and three-phase versions) with multi-channel conversion of energy flow began to develop 50 years ago. The distinctive features of their structural-algorithmic organization are that it is universal for many applications in a wide range of requirements placed on it, both in terms of power range and electromagnetic compatibility. At the same time, it is possible to practically implement a voltage inverter with multi-channel conversion, both with a high-voltage and a high-current output, and using switching elements limited in voltage and current, which is fundamentally important. The required power is provided by increasing the number of channels M in the inverter. At the same time, as the number M increases, electromagnetic compatibility performance improves, and resource costs for filtering the output voltage decrease. With all this, the promising class of voltage inverters with multi-channel conversions has not yet received widespread practical development. One of the reasons for this situation may be, in particular, the lack of information and methodological support for the design procedure for winding transfilters (TF-M) used in the voltage inverters with multichannel conversion M. The purpose of the presented work is to eliminate this shortcoming. It presents the necessary results of theoretical and experimental studies of TF-M.