MAGNETIC BEARING CONTROL DEVICE AND CONTROL METHOD

Title:

MAGNETIC BEARING CONTROL DEVICE AND CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2019/135635

Kind Code:

A1

Abstract:

Magnetic bearing control device and control method are disclosed. A magnetic bearing control device according to an embodiment of the present invention comprises: a bearing control unit for outputting a plurality of switch control signals on the basis of gap information of a bearing coil and a rotor and current information applied to the bearing coil; and a coil driving unit for turning a plurality of self-formed switching elements on/off in accordance with the plurality of switch control signals and controlling the amount of current applied to the bearing coil and thus adjusting the magnetic field strength between the bearing coil and the rotor. The bearing control unit generates and outputs the plurality of switch control signals such that bootstrap capacitor charging time of the coil driving unit can be secured. Therefore, a magnetic bearing control circuit structure can be simplified by means of an additional bootstrap capacitor structure.

Inventors:

KIM KYUNG MIN (KR)
AN JOONSIK (KR)

Application Number:

PCT/KR2019/000151

Publication Date:

July 11, 2019

Filing Date:

January 04, 2019

Export Citation:

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Assignee:

LG ELECTRONICS INC (KR)

International Classes:

F16C32/04

Foreign References:

KR20010086234A	2001-09-10
JPH11206179A	1999-07-30
KR101385977B1	2014-04-16
KR100757529B1	2007-09-11
KR20020010100A	2002-02-02

Other References: