FIELD: frequency regulation of induction electric motor. SUBSTANCE: stabilization of regulation system, when parameters of rotor circuit and regulation devices of control system alter, is achieved by introduced automatic magnetic linkage frequency tuning circuit and forced orientation of electric motor flux. Device has magnetic linkage circuit and automatic magnetic linkage frequency tuning circuit. Information member of device has two detectors, for measuring constituents of main magnetic linkage using Hall gates, which outputs are connected to inputs of low-pass filters through unit for calculation of magnetic linkage constituents and converter of magnetic linkage from linear to rotational coordinate system. Outputs of detectors of electric motor phase current are connected to converter of currents from linear coordinate system to rotational coordinate system through three-phase magnetic linkage converter. EFFECT: improved static and dynamic characteristics of device. 2 dwg
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