| 摘要 |
1. A method for regulating the speed of an electrical machine (104) fed from a supply network (103) by a thyristor converter arrangement (101), where the ignition angles of the thyristors are given by arithmetic operations ("regulating operations"), which regulate the machine speed (n) to a theoretical input value (n*), characterised in that the ignition time of a thyristor is taken as a reference time for determining the following ignition time for the next thyristor, that by an arithmetic regulating operation the following ignition time is determined in dependence upon the speed, where prior to the implementation of the arithmetic regulating operation, it is decided whether the machine current (i) is discontinuous or not, and that in the event of a continuous current an arithmetic operation dependent both upon the machine current and the machine speed is carried out as a regulating operation, whereas in the event of a discontinuous current an arithmetic operation which is only dependent upon the machine speed is carried out as a regulating operation. |
