SINGLE-PHASE VALVE ELECTRIC DRIVE Russian patent published in 2012 - IPC H02K29/00 H02K1/14 H02K3/04 H02P6/18 

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, namely, to electric machines, and may be used in industrial mechanisms requiring speed control. The technical result is achieved though the control circuit of single-phase valve electric drive, which includes transistor bridge switch with one of its diagonal being meant for connecting to winding, while the other diagonal of switch bridge being linked with a power source. The control inputs of switch are coupled with control element, which operates by algorithms ensuring its operation under pulse-duration modulation. At the same time, according to the invention, the control element contains micro controller with drive, connection points with transistor switch diagonal and with two microcontroller inputs through voltage stabiliser. The third microcontroller input is connected to control electrodes of transistor switch through the driver so that the diagonals are connected in turn to power supply poles.

EFFECT: increased efficiency of single-phase valve electric drive due to generation of maximum operating torque and start torque as well as current shape close to sinusoid, improved motor performance and simplified control of valve electric drive with reduced overall dimensions.

4 cl, 3 dwg, 1 tbl