Title:
自己始動型永久磁石同期電動機及びこれを用いた圧縮機
Document Type and Number:
Japanese Patent JP4528825
Kind Code:
B2
Abstract:
A self-starting type permanent magnet synchronous motor comprises a stator and a rotor. The rotor comprises a rotor core having a plurality of slots provided in an outer periphery thereof and a cage winding comprising conductive bars embedded in the slots and conductive end rings that short-circuit the conductive bars on both end faces of the bars in an axial direction thereof. The rotor core comprises at least one magnet insertion hole arranged on an inner peripheral side from the slots, and at least one permanent magnet embedded in the at least one magnet insertion hole. When a pole center axis is denoted as a d-axis and an axis deviating from the pole center axis by an electrical angle 90° is denoted as a q-axis, a flux content generated by the cage winding during start-up becomes maximal in the vicinity of and on one of the d-axis and the q-axis.
Inventors:
Satoshi Kikuchi
Hiroyuki Mikami
Takahashi Akashi
Yoshio Tomio
Keiji Tanaka
Shigeru Miyake
Yellow
Yu Otahara
Kenji Tojo
Kumakura Hideyuki
Hiroyuki Mikami
Takahashi Akashi
Yoshio Tomio
Keiji Tanaka
Shigeru Miyake
Yellow
Yu Otahara
Kenji Tojo
Kumakura Hideyuki
Application Number:
JP2007329483A
Publication Date:
August 25, 2010
Filing Date:
December 21, 2007
Export Citation:
Assignee:
Hitachi Appliances, Inc.
International Classes:
H02K21/46; F04C29/00; H02K1/27; H02K17/16; H02K21/14
Domestic Patent References:
| JP2001037127A | ||||
| JP2001037126A |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda