Method for determining the turn-on times of the switches of an n-phase pulsed current-controlled invertor

摘要

In the case of pulsed current-controlled invertors, the natural frequency of the filter and harmonics of the fundamental occur in the AC circuit when using known methods for generating pulse patterns. The method according to the invention leads to severe attenuation of the natural frequency of the filter and harmonics of the fundamental. By superimposing the current ix1, flowing on the AC side without the action of a converter, and the direct current ix2, connected to the AC side by the converter, within a time interval tint = t2 - t1, turn-on times are calculated in such a way that a required desired value of the alternating current is reached. Sinusoidal or other waveforms are simulated by means of the desired current value. The method is suitable for single-phase or multi-phase pulsed current-controlled invertors. IMAGE