| Abstract |
For control of a four-quadrant converter (4QC), the paper analyzes the effect of a non-zero computation time of the digital control algorithm. As a result, a novel discrete-time control strategy for four-quadrant converters (4QC) is proposed. In order to compensate for computational delays, the new approach a) utilizes a sample strategy that is synchronized with the 4QC pulse-width modulator and b) features a predictive current control. Since the proposed strategy does not require extra fast hardware, costs might be saved without lowering performance. Alternatively, for a given fast hardware extra features could be added to the control algorithm. |
