SINGLE-PHASE-THREE-PHASE SEMICONDUCTOR REVERSIBLE SWITCHBOARD DRIVEN BY SINGLE-PHASE AC CIRCUIT Russian patent published in 2014 - IPC H02P21/12 

FIELD: electricity.

SUBSTANCE: first outputs of the first and second semiconductor switches are connected with a phase of a single-phase AC circuit. The first outputs of the third and fourth semiconductor switches are connected with zero of a single-phase AC circuit. The second outputs of the first and third semiconductor switches are combined and connected with the start of the first stator winding and the end of the third stator winding. The second outputs of the second and fourth semiconductor switches are combined and connected with the end of the first stator winding and the start of the third stator winding. At the same time the start of the second stator winding of the motor is connected to zero, and its end - to the phase of the single-phase AC circuit.

EFFECT: invention provides for the possibility of increasing torque developed by a motor and capacity due to production of more even circular rotating magnetic flux of a stator field, simplified system of transistor control.

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