Title:
SINGLE-PHASE AC SYNCHRONOUS MOTOR
Document Type and Number:
WIPO Patent Application WO/2008/050575
Kind Code:
A1
Abstract:
An inexpensive, productivity-enhanced single-phase AC synchronous motor
in which stabilized synchronous pull-in can be carried out by suppressing generation
of counter torque during a starting operation. Starting operation is performed
while the energizing range of motor current is suppressed such that the energizing
direction of motor current waveform lagging in a phase behind the output waveform
from a detection sensor (17) is switched at at least the zero cross point of the
output waveform from the sensor when the number of revolutions of a permanent
magnet rotor (1) reaches a predetermined number of revolutions in the vicinity
of the synchronous number of revolutions.
Inventors:
KOMATSU FUMITO (JP)
OSADA HIDEAKI (JP)
TOOYAMA AKIRA (JP)
MURAKAMI MAKOTO (JP)
OSADA HIDEAKI (JP)
TOOYAMA AKIRA (JP)
MURAKAMI MAKOTO (JP)
Application Number:
PCT/JP2007/068786
Publication Date:
May 02, 2008
Filing Date:
September 27, 2007
Export Citation:
Assignee:
YUGEN KAISHA K R & D (JP)
YUGEN KAISHA DIJIANET (JP)
KOMATSU FUMITO (JP)
OSADA HIDEAKI (JP)
TOOYAMA AKIRA (JP)
MURAKAMI MAKOTO (JP)
YUGEN KAISHA DIJIANET (JP)
KOMATSU FUMITO (JP)
OSADA HIDEAKI (JP)
TOOYAMA AKIRA (JP)
MURAKAMI MAKOTO (JP)
International Classes:
H02K29/03; H02P1/46; H02K29/08; H02P6/06; H02P6/08; H02P6/15; H02P6/20; H02P6/26
Foreign References:
| JP2000083390A | 2000-03-21 | |||
| JP2001169576A | 2001-06-22 | |||
| JPS52153018U | 1977-11-19 | |||
| JPS6277885A | 1987-04-10 | |||
| JP2002233184A | 2002-08-16 | |||
| JPS57162971A | 1982-10-06 | |||
| JP3050851B2 | 2000-06-12 |
Other References:
See also references of EP 2077610A4
Attorney, Agent or Firm:
WATANUKI, Takao (12-9 Nakagosho 3-chome, Nagano-sh, Nagano 35, JP)
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