FIELD: systems for automatic control of alternating current electric motors, possible use for frequency control of asynchronous motor speeds.
SUBSTANCE: device features three-phased motor model in natural coordinates of stator and rotor and load moment compensation contour. The system contains magnetic linkage contour and speed contour with slave contours of longitudinal and transverse components of stator current. Informational part of the system includes a device for transforming magnetic linkage of rotor into system of rotating coordinates (x,y) and device for transforming currents from three-phased (a,b,c) system into rotary system of coordinates (x,y), connected to outputs of the model. For forced orientation of machine flow, a contour for automatic tuning of magnetic linkage frequency is used.
EFFECT: ensured qualitative characteristics of systems for vector control of alternating current electric motors with a minimum of check connection sensors.
2 dwg
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