Title:
VARIABLE-SPEED MOTOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/244212
Kind Code:
A1
Abstract:
Provided is a variable-speed motor device in which a sequential SVPWM method is performed that sequentially arranges three or more types of current supply periods within each PWM cycle period. Stator coils comprise star-connected three-phase coils or double-ended three-phase coils. Phase currents are supplied to only two phase coils among the star-connected three-phase coils in two current supply periods formed in each PWM cycle period. The double-ended three-phase coils are connected to the PWM leg and fixed potential leg of a three-phase inverter. The PWM leg and the fixed potential leg are switched to each other at every electrical angle of 180° or 360°.
Inventors:
TANAKA SHOUICHI (JP)
Application Number:
PCT/JP2018/023139
Publication Date:
December 26, 2019
Filing Date:
June 18, 2018
Export Citation:
Assignee:
TANAKA SHOUICHI (JP)
International Classes:
H02P27/06; H02P25/22
Domestic Patent References:
| WO2016046993A1 | 2016-03-31 |
Foreign References:
| JP2014187747A | 2014-10-02 |
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