Title:
SPATIAL VECTOR PULSE WIDTH MODULATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/087362
Kind Code:
A1
Abstract:
Provided is a SVPWM method that is capable of reducing losses in a DC power source and an inverter. According to the present invention, an inverter has three or more legs that supply phase currents to respective phase coils of a multiphase motor. The DC power source supplies a power supply current to the inverter during a current supply period within each PWM cycle period. Some of the legs have a dead state during the current supply period. In this dead state, an upper arm switch and a lower arm switch of said legs are turned off so as to inhibit power being supplied from the DC power source to some of the phase coils. The DC power source separately supplies phase currents different from each other to the inverter during a plurality of current supply periods within a single PWM cycle period. The current supply periods do not overlap each other in a partial load range.
Inventors:
TANAKA SHOUICHI (JP)
Application Number:
PCT/JP2017/039792
Publication Date:
May 09, 2019
Filing Date:
November 02, 2017
Export Citation:
Assignee:
TANAKA SHOUICHI (JP)
International Classes:
H02P27/08
Domestic Patent References:
| WO2017081900A1 | 2017-05-18 |
Foreign References:
| JP2005160183A | 2005-06-16 | |||
| JP2008271620A | 2008-11-06 | |||
| JP2002191185A | 2002-07-05 |
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