Title:
TORQUE PULSATION MEASUREMENT METHOD AND TORQUE PULSATION MEASUREMENT DEVICE FOR PERMANENT MAGNET MOTOR AND METHOD FOR MANUFACTURING PERMANENT MAGNET MOTOR
Document Type and Number:
WIPO Patent Application WO/2024/019003
Kind Code:
A1
Abstract:
The present disclosure provides a torque pulsation measurement method for a permanent magnet motor provided with a stator that has an iron core guiding magnetic flux and a coil insulated from the iron core and capable of generating a rotating magnetic field, a rotor that has a magnet generating magnetic flux and that is rotatably fixed to the stator guiding magnetic flux, and a velocity detector that detects the mechanical angular velocity of the rotor. The torque pulsation measurement method includes a calculation step for calculating, in a state in which an output shaft of the permanent magnet motor is not driven from outside and is driven by the permanent magnet motor, torque pulsation by decomposing each angular acceleration obtained by differentiating the mechanical angular velocity detected by the velocity detector into a frequency component of an order that is an integral multiple of a rotation angle and multiplying the frequency component by an inertia moment.
Inventors:
SAKAUE ATSUSHI (JP)
OKAMOTO TAKESHI (JP)
LI XUTAO (JP)
OKAMOTO TAKESHI (JP)
LI XUTAO (JP)
Application Number:
PCT/JP2023/026007
Publication Date:
January 25, 2024
Filing Date:
July 14, 2023
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORP (JP)
MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORP (JP)
International Classes:
H02P21/20
Foreign References:
| JP2016100949A | 2016-05-30 | |||
| JP2021136811A | 2021-09-13 |
Attorney, Agent or Firm:
TAKADA, TAKAHASHI & PARTNERS (JP)
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