Calculation procedure for electromagnetic processes in multilevel semiconductor converters for electrical equipment in mining

The authors propose a calculation procedure for electromagnetic processes running in converters with clamp diodes based on the numerical simulation and method of switching functions. The procedure is specific for the capacity to calculate basic indices of energy efficiency of semiconductor converters in various work modes. Moreover, the procedure is universal in terms of number of voltage levels and number of phases. Owing to modern computation techniques, the time and labor inputs in the calculation is greatly reduced. The proposed procedure has been experimentally tested.