Industrial Automatic Control Systems and Controllers Annotation << Back Parametric Automation of a Two-speed Induction Motor V.I. Domanov, A.V. Domanov, S.V. Gavrilova Discusses the various speed control system two-speed induction motor. Substantiates the effectiveness of using separate switching of two groups of motor windings. This circuit allows simple, including parametric, method to regulate the rate of the asynchronous motor, allows to increase its effi ciency and to improve the power factor. We analyze the equivalent circuit and vector diagram of the engine, which illustrate the features of his work in different modes. Based on the experimental data is determined by an expression relating the emf of a free group of windings with the regime of the engine. Proportional relationship between emf and engine speed allows the signal as speed feedback. The research resulted in simple and effective automated control system for induction motor. Keywords: speed control; parameter control; induction motor; equivalent circuit; vector diagram; fl ux linkage; sliding; emf. Contacts: E-mail: andrew.domanov@gmail.com, E-mail: s.gavrilova.1990@mail.ru Pp. 03-07.