| Abstract |
Today, microprocessors play a dominating role in the control of electrical drives as the combination of micro electronics, power electronics and unconventional control strategies allows the design of innovative drive solutions. In contrast to the well-known control concepts which require sensors and analogous interfaces the presented control strategy is highly suitable for Low-Cost applications because all actual values are generated by observers (software). As there is no analogous signal processing in this digital control concept, there is less hardware for the realization of this and it is cheaper. This paper deals with the mathematical description of Low-Cost drive control using a dc-drive as an example. The results can be easily transformed to all ac-drives fed by commutationsless or self-commutated power converters. |
