VALVE ELECTRIC DRIVE Russian patent published in 2019 - IPC H02P21/00 H02P21/14 H02P6/182 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in electromechanical systems in production, transport and construction. Valve electric drive has synchronous motor with rotor-inductor (4) and phases of stator winding (1–3) connected to frequency converter (5) through sensor (6) of stator currents. Three of its outputs are connected to inputs of coordinate converter (7), outputs of which are connected to coordinate converter (8), which outputs are connected to second inverting inputs of adders (12, 13), first inputs of which are connected to outputs of current computer (19), and outputs are connected to inputs of current regulators (15, 16), outputs of which are connected to inputs of coordinate converter (9), which outputs are connected to inputs of coordinate converter (10), three outputs of which are connected to inputs of frequency converter (5). Input signal ω₀, proportional to the required rotation frequency, is transmitted to the first input of adder (11), the second inverting input of which is connected to the second output of the of rotation angle and frequency computer (22) and the second input of current computer (19), and output is connected to input of speed controller (14), output of which is connected to first input of current computer (19), and first output of rotation angle and frequency computer (22) is connected to third inputs of coordinate converters (8, 9). Due to the introduction of calculators (20, 21) EMF of rotation and differentiators (17, 18), the inputs of which are connected to the outputs of coordinate converter (7), and the outputs are connected to the third inputs of the rotation EMF calculators (20, 21), the first inputs of which are connected to the outputs of converter (9) coordinates, second inputs are connected to outputs of converter (7) of coordinates, and outputs are connected to inputs of computer (22) of rotation angle and frequency, valve electric drive with increased accuracy of rotation frequency control is obtained.

EFFECT: higher accuracy of rotation speed control.

1 cl, 1 dwg