Title:
高速電気モーター用電力供給回路
Document Type and Number:
Japanese Patent JP2006507787
Kind Code:
A
Abstract:
A power control system ( 12 ) for an electric motor having at least one magnetic bearing includes a DC/DC converter ( 18 ) supplied from a DC link bus ( 179 ) connected to a main power supply ( 14 ), the bus ( 17 ) supplying power for the electric motor and for a bearing actuator the converter ( 18 ) provides low voltage DC power supplies for a motor controller ( 23 ), a bearing controller ( 24 ) and a supervisory controller ( 26 ), the later monitoring the main power supply and communicating with the motor controller ( 23 ) and bearing controller ( 24 ) so as to cause the motor to operate as a generator in the event of a failure of the main power supply ( 14 ) to thereby supply power to the DC link bus ( 17 ) to maintain operation of the magnetic bearing. Circuit switching components are connected to the motor winding and selectively switched in a manner causing current generated in the motor winding to flow in one direction into the DC link bus ( 17 ) only while the winding voltage is greater than that of the DC link bus ( 17 ).
Inventors:
Lynn, Why, You
Application Number:
JP2004554097A
Publication Date:
March 02, 2006
Filing Date:
September 23, 2003
Export Citation:
Assignee:
TURBOCOR INC.
International Classes:
H02J9/06; F16C32/04; H02P3/18; H02P3/22; H02P7/29
Attorney, Agent or Firm:
Junzo Watanabe