POWER SUPPLY CIRCUIT OF HIGH SPEED ELECTRIC DRIVE Russian patent published in 2008 - IPC H02P6/24 H02K7/09 

FIELD: electricity.

SUBSTANCE: invention is related to the power supply circuit for high speed electric drive. Technical result consists in creation of power supply system for high speed electric drive, which rotates in magnet bearings, which may maintain power in bearings in case of main power supply source disconnection. Also for uninterrupted power supply to magnet bearings of high speed electric drive in case of main power supply source disconnection until stop of rotating parts. Besides, it consists in creation of controller for high speed electric drive. System (12) of electric drive power control with at least one magnet bearing, which contains transducer (18) of direct current, which is supplied with power from bus bar (17) of direct current connection line, which is connected to the main source (14) of electric power supply, moreover, the bus bar (17) is intended for power supply to electric drive and electric drive of bearings. Transducer (18) provides power supply of low voltage direct current for controller (23) of electric current, controller (24) of bearings and managing controller (26), which is intended for monitoring of main electric power supply source and is connected to controller (23) of electric drive and controller (24) of bearings in such a manner to provide operation of electric drive as generator in case of main electric power supply source disconnection (14) and power supply to bus bar (17) of direct current connection lines for maintenance of magnet bearing operation. The circuit switching elements are connected to the electric drive winding with the possibility of selective switching so that current, which is formed in the electric drive winding, passes in one direction to bus bar (17) of direct current connection line only when the winding voltage is higher than the voltage of bus bar (17) of direct current connection line.

EFFECT: creation of reserve power supply system for high speed electric drive.

9 cl, 3 dwg