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Title:
INVERTER CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/105839
Kind Code:
A1
Abstract:
The present invention provides an inverter control device for estimating the magnetic flux of a rotor, and calculating and compensating for a slip frequency on the basis of a torque current and a magnetic flux current, to control the speed of an electric motor. To this end, the present invention may comprise: a command voltage generation unit for outputting a three-phase PWM voltage with respect to a command frequency to an inverter on the basis of voltage/frequency operation; and a slip frequency determination unit for determining a slip frequency on the basis of the phase current and phase voltage of an electric motor driven by the inverter.

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Inventors:
CHOI SEUNG-CHEOL (KR)
LEE HAK-JUN (KR)
Application Number:
PCT/KR2019/009874
Publication Date:
May 28, 2020
Filing Date:
August 07, 2019
Export Citation:
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Assignee:
LS ELECTRIC CO LTD (KR)
International Classes:
H02P21/14; H02M7/5395; H02P21/00; H02P21/16; H02P21/22
Foreign References:
KR101530543B12015-06-19
KR101073688B12011-10-14
KR20160109859A2016-09-21
JP2016096666A2016-05-26
KR20140014734A2014-02-06
Other References:
See also references of EP 3886313A4
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
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