Title:
ELECTRIC CURRENT DETECTION DEVICE, MOTOR CONTROL DEVICE, AND ELECTRIC CURRENT DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/066153
Kind Code:
A1
Abstract:
This electric current detection device detects an electric current flowing through an inverter unit which includes a first switching element and a second switching element connected in series and which generates an alternating-current signal. The electric current detection device comprises: a first Rogowski coil for detecting an electric current flowing through the first switching element; a second Rogowski coil for detecting an electric current flowing through the second switching element; and a detection processing unit which generates a composite signal by adding a first detection signal obtained by integrating an output of the first Rogowski coil and a second detection signal obtained by integrating an output of the second Rogowski coil, and detects an output electric current of the alternating-current signal on the basis of the composite signal.
Inventors:
KAKUMOTO SHIGEKI (JP)
SASHIDA KAZUYUKI (JP)
SASHIDA KAZUYUKI (JP)
Application Number:
PCT/JP2020/037574
Publication Date:
April 08, 2021
Filing Date:
October 02, 2020
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG (JP)
International Classes:
G01R19/00; G01R15/18; G01R19/165; H02M7/48; H02P27/06
Domestic Patent References:
| WO2017150726A1 | 2017-09-08 |
Foreign References:
| US5815391A | 1998-09-29 | |||
| JP2001165965A | 2001-06-22 | |||
| JP2013231601A | 2013-11-14 | |||
| JP2019138735A | 2019-08-22 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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