POWER CONVERSION DEVICE AND POWER CONVERSION DEVICE CONTROL METHOD - HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD

Title:

POWER CONVERSION DEVICE AND POWER CONVERSION DEVICE CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2016/194393

Kind Code:

A1

Abstract:

Provided is a power conversion device mounted with a function for detecting a step-out of a rotating machine which contains permanent magnets, and also provided is a device (for example, a rotating machine drive device, a refrigeration device, etc.) using the power conversion device. The power conversion device is equipped with a control device for determining, on the basis of a signal detected by a magnetic pole position sensor attached to any one of the phases of a motor, whether or not the motor is in a step-out state. Further, the power conversion device is characterized in that the control device determines, on the basis of whether or not the signal detected by the magnetic pole position sensor satisfies a predetermined condition within a preset predetermined time, whether or not the motor is in the step-out state.

Inventors:

IWASE YUUTA (JP)
TAGUCHI YOSHIYUKI (JP)

Application Number:

PCT/JP2016/050176

Publication Date:

December 08, 2016

Filing Date:

January 06, 2016

Export Citation:

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Assignee:

HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)

International Classes:

H02P6/16

Foreign References:

JP2000295886A	2000-10-20
JP2008220077A	2008-09-18
JP2014143839A	2014-08-07

Other References: