Title:
METHOD FOR SAVING POWER SUPPLIED TO ROTATING ELECTRIC MACHINE FOR ELECTRIC MOBILE UNIT, AND ROTATING ELECTRIC MACHINE FOR ELECTRIC MOBILE UNIT
Document Type and Number:
WIPO Patent Application WO/2022/230942
Kind Code:
A1
Abstract:
Provided is a method for saving power supplied to a rotating electric machine, the method achieving a power supply energy-saving effect by devising the motor side. According to the present invention, which aims to achieve power supply energy-saving (power saving), a rotating electric machine (motor 10) is connected to a power supply (battery 50). A motor driver (which may be hereafter referred to simply as a driver) 40 is disposed between the battery 50 and the motor 10. The driver 40 is a device for driving and controlling the motor by flowing an electric current therethrough, and is a device for controlling the motor. The driver is indispensable for the driving (including the number of revolutions, speed control, and voltage control) of a brushless motor. A maximum electric current is defined for each driver. From the viewpoint of motor protection and for safety, an absolute maximum rating is defined, and the driver is used with an electric current value at or below the rating. A cable 60 is disposed between the driver 40 and the battery 50. A cable 70 is disposed between the driver 40 and the motor 10. The cables are a main cause of copper loss. Reference numeral 80 designates a coil connection pattern switching device, which is a device for setting switching timing, in addition to a switch function group for switching connections of the coils in the motor 10.
Inventors:
SHIRAKI MANABU (JP)
FURUHATA TAKASHI (JP)
TSUDA YUKIO (JP)
OMOMO SHUICHI (JP)
FURUHATA TAKASHI (JP)
TSUDA YUKIO (JP)
OMOMO SHUICHI (JP)
Application Number:
PCT/JP2022/019106
Publication Date:
November 03, 2022
Filing Date:
April 27, 2022
Export Citation:
Assignee:
CORELESS MOTOR CO LTD (JP)
International Classes:
H02P25/18
Foreign References:
| JP2006521781A | 2006-09-21 | |||
| JP2021505122A | 2021-02-15 | |||
| CN102624122A | 2012-08-01 |
Attorney, Agent or Firm:
MURAKAMI Tomokazu (JP)
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