Title:
DRIVE DEVICE, ELECTRIC VEHICLE, AND DRIVE DEVICE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/186760
Kind Code:
A1
Abstract:
A control unit performs drive control of a motor by using a trapezoidal-shaped energization waveform, wherein said drive control includes: control for switching the on/off of a first switch by using a first phase high-side PWM signal having an adjusted duty ratio which is adjusted so as to increase in stages up to a preset set duty ratio, maintain the set duty ratio after increasing, and decrease in stages from the set duty ratio after maintaining; control for switching the on/off of a third switch by using a second phase high-side PWM signal having the adjusted duty ratio; and control for switching the on/off of a fifth switch by using a third phase high-side PWM signal having the adjusted duty ratio. Increasing in stages up to the set duty ratio and decreasing in stages from the set duty ratio are performed in a set period which is set longer than the pulse periods of the first phase high-side PWM signal, the second phase high-side PWM signal, and the third phase high-side PWM signal.
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Inventors:
MEGURO TAKAYUKI (JP)
INOGUCHI YUTA (JP)
INOGUCHI YUTA (JP)
Application Number:
PCT/JP2018/012748
Publication Date:
October 03, 2019
Filing Date:
March 28, 2018
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG (JP)
International Classes:
H02P27/08
Foreign References:
| JP2001186791A | 2001-07-06 | |||
| JP2003018878A | 2003-01-17 | |||
| JP2011142721A | 2011-07-21 |
Attorney, Agent or Firm:
NAGAI Hiroshi et al. (JP)
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