Model-Control PROMC---A New Control Strategy with Microcomputer for Drive Applications

The new control strategy "model control" PROMC will be presented. The model control strategy can be used favorably in systems with switching amplifiers such as converters and inverters. The principle idea is to find an electrical model which is supplied with voltage or current sections from the switching amplifier. By this model it is possible to precalculate the desired signals for the next switching state. The precalculated signals are compared with the real signals of the existing switching state. With this procedure the optimal switching moment is determined. The advantages of this strategy are shortest response time possible, no overshoot, no sensitivity against saturation, and no influence of continuous or discontinuous current. Therefore, the strategy features "precalculation of a reference signal for optimal model control" (PROMC).