Transients in the system asynchronous motor-thyristor switch with a limited switching frequency.

Abstract

The switching processes in the phase-pulse astatic system of the asynchronous drive are analyzed. The switching frequency in such circuits is significantly lower than in static systems with analog feedback sensors. This is because the scheme described does not have a tachogenerator, and the slip frequency of the engine is used for feedback. You can also use contactless sensors selsiny. A laboratory setup for phase-pulse speed control of an asynchronous motor is described. The results of the experimental determination of the voltages at the switch are given. A comparison of these values ​​with the calculated values. Figures 5. Bibliographic references 5.