Title:
PHASE ANGLE DETECTION SYSTEM, CONTROL DEVICE, AND PHASE ANGLE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/079861
Kind Code:
A1
Abstract:
A phase angle detection system according to one aspect of an embodiment of the present invention detects the phase angle of an electric motor in a drive system equipped with a transmission unit that changes the rotation speed of the electric motor. This phase angle detection system comprises: a first sensor; a second sensor; and an arithmetic processing unit. The first sensor outputs a first signal for detecting at least a specific phase angle of a rotor of the electric motor. The second sensor outputs a second signal that enables the detection of the amount of rotation of an output shaft of the transmission unit. In the arithmetic processing unit, the amount of deviation included in a detection result of the specific phase angle from the first signal is predefined for each rotational direction of the electric motor, and the deviation amount of the first signal determined by the rotational direction of the electric motor, the detection result of the first signal, and the second signal are used to calculate an estimated value of the absolute angle of the rotor of the electric motor.
Inventors:
KOJIMA MAKIMURA AYAME (JP)
ISHIMARU YUSUKE (JP)
TOBAYASHI SHUNSUKE (JP)
ISHIMARU YUSUKE (JP)
TOBAYASHI SHUNSUKE (JP)
Application Number:
PCT/JP2022/038281
Publication Date:
April 18, 2024
Filing Date:
October 13, 2022
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP (JP)
International Classes:
H02P6/16
Foreign References:
| JPH0996545A | 1997-04-08 | |||
| JP2018029458A | 2018-02-22 | |||
| JP2007321879A | 2007-12-13 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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