FAN AND MOTOR DRIVE DEVICE THEREOF

Japanese Patent JP2017229227

A

PROBLEM TO BE SOLVED: To provide a fan with a low cost and a motor drive device for the fan.SOLUTION: A fan and a motor drive device thereof are provided. The motor drive device is configured to drive a motor and includes a control management unit and a voltage converter. The control management unit classifies target rotation speed signals provided by an ECU into multiple rotation speed ranges, each corresponding to a specific output duty ratio. The control management unit receives a target rotation speed signal transmitted from the ECU in a real-time manner, and outputs a voltage regulating signal, which is a pulse width modulation signal having a duty ratio corresponding to one of the rotation speed ranges in which the target rotation speed signal transmitted from the ECU falls. The voltage converter is connected between a power source and the motor, and is configured to regulate a voltage outputted to the motor in response to the voltage regulating signal having the specific duty ratio outputted from the control management unit, to regulate a rotation speed of the motor.SELECTED DRAWING: Figure 1

QIN RUI FENG
TSE KWOK KUEN
GAO JI XIANG
DONG JIAN
GAN HAI

JP2017109192A

December 28, 2017

June 01, 2017

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JOHNSON ELECTRIC SA

H02P7/29

JP2007060835A	2007-03-08
JP2010146920A	2010-07-01
JP2001298988A	2001-10-26
JP2005287284A	2005-10-13
JPH0374196A	1991-03-28
JPH037092A	1991-01-14
JPH10271872A	1998-10-09

US3988656A	1976-10-26
CN1567704A	2005-01-19

Shinichiro Tanaka
Disciple Maru Ken
▲吉▼田 和彦
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Hiroshi Uesugi
Naoki Kondo

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