FIELD: electricity.
SUBSTANCE: in a three-phase high-speed valve-inductor motor the number of rotor poles is equal to doubled number of stator pole pairs, a magnetic conductor of the motor has such configuration of the rotor and stator that provides for permanent value of derivative inductances of phase windings by the angle of rotor rotation, the sign of which changes periodically with the period of 360 electric degrees, and the period of derivative inductances of phase windings by the angle of rotor rotation is shifted by 120 electric degrees, motor phases are switched by currents of special shape, which does not have breaks of derivatives at currents that are not equal to zero and provides for absence of current in points, where break of derivatives inductances of phases takes place by the angle of rotor rotation, the shape of these currents is provided by the control circuit with the help of a relay-current method of control.
EFFECT: reduced losses in windings and a magnetic conductor under the same speed of rotation as in conventional valve-inductor motors, reduced noise and vibrations and increased uniformity of torque.
3 dwg
