CONTROL DEVICE, CONTROL METHOD, MOTOR, AND ELECTRIC OIL PUMP

Title:

CONTROL DEVICE, CONTROL METHOD, MOTOR, AND ELECTRIC OIL PUMP

Document Type and Number:

WIPO Patent Application WO/2018/062096

Kind Code:

A1

Abstract:

When an estimated rotational speed becomes lower than or equal to a predetermined rotational speed, a control unit 76 of a motor control device 70 increases the voltage to be applied to a coil 53 on the basis of a control signal for increasing the voltage to be applied to the coil 53 as calculated from the estimated rotational speed; when the estimated rotational speed is higher than the predetermined rotational speed and in cases where an actual rotational speed is lower than the predetermined rotational speed, the control unit increases the voltage to be applied to the coil 53 on the basis of a control signal for increasing the voltage to be applied to the coil 53 as calculated from the actual rotational speed; and when the estimated rotational speed is higher than the predetermined rotational speed and in cases where the actual rotational speed is higher than the predetermined rotational speed, the control unit decreases the voltage to be applied to the coil 53 on the basis of a control signal for decreasing the voltage to be applied to the coil 53 as calculated from the actual rotational speed.

Inventors:

SATO KEI (JP)
HIBI YUICHI (JP)
SHIRAI YASUHIRO (JP)

Application Number:

PCT/JP2017/034522

Publication Date:

April 05, 2018

Filing Date:

September 25, 2017

Export Citation:

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Assignee:

NIDEC TOSOK CORP (JP)

International Classes:

H02P6/16; F04B43/04; F04B49/06; F04C2/10; H02P6/15; H02P23/03; H02P27/08

Foreign References:

JP2013207891A	2013-10-07
JP2007229256A	2007-09-13
JP2013163237A	2013-08-22
JP2003227468A	2003-08-15
JP2014009655A	2014-01-20