Method for controlling power semiconductor in inverter

A method for controlling a power semiconductor in an inverter by means of a microprocessor which controls pulse modulation. The method comprises steps of: i creating, calculating and/or selecting a value from a defined digital space as a first factor; ii, multiplying the first factor and a basic switching power value to calculate clock frequency A; iii, after clock cycles in the number of X or after a specific time period T with previously calculated clock frequency A, by using the value which is newly created, calculated, and/or selected as a new factor in the defined digital space, and multiplying the value with the basic switching power, to calculate new clock frequency A; iv, repeating step iii for multiple times, after X clock cycles, or after the specific time period T with previously calculated clock frequency, through multiplying the basic switching frequency with the newly created/calculated and/or selected value, calculating new clock frequency. The method is used to improveelectromagnetic compatibi