Title:
SINGLE-PHASE INDUCTION MOTOR
Document Type and Number:
WIPO Patent Application WO/2017/221595
Kind Code:
A1
Abstract:
Provided is a capacitor-start single-phase induction motor with which a large startup torque can be obtained. This single-phase induction motor is equipped with: a main coil; an auxiliary coil connected in parallel to the main coil; a capacitor connected in series to the auxiliary coil; and a governor circuit that controls the current supplied from the capacitor to the auxiliary coil. The governor circuit performs a startup control wherein an operation in which the auxiliary coil is made to transition from a non-conducting state to a conducting state and then is made to transition again to the non-conducting state is performed once during less than a half-cycle of the voltage of an input power supply of the single-phase induction motor. When the auxiliary coil is in the conductive state current flows from the capacitor to the auxiliary coil, enabling startup torque to be obtained.
Inventors:
OYAMA ATSUSHI (JP)
YOSHIDA TOSHIYA (JP)
YOSHIDA TOSHIYA (JP)
Application Number:
PCT/JP2017/018617
Publication Date:
December 28, 2017
Filing Date:
May 18, 2017
Export Citation:
Assignee:
EBARA CORP (JP)
UNIV TOKYO DENKI (JP)
UNIV TOKYO DENKI (JP)
International Classes:
H02P1/44; H02P23/07
Foreign References:
| US20060097687A1 | 2006-05-11 | |||
| JPS4723608U | 1972-11-16 | |||
| JPS5910179A | 1984-01-19 | |||
| JPS5752389A | 1982-03-27 | |||
| JP2012115034A | 2012-06-14 |
Other References:
See also references of EP 3474435A4
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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