HYSTERESIS MOTOR AND METHOD OF MANUFACTURING STATOR YOKE FOR HYSTERESIS MOTOR

Title:

HYSTERESIS MOTOR AND METHOD OF MANUFACTURING STATOR YOKE FOR HYSTERESIS MOTOR

Document Type and Number:

Japanese Patent JP2009038907

Kind Code:

A

Abstract:

To provide a hysteresis motor having a stator yoke which employs a soft magnetic stainless steel plate having excellent AC magnetic characteristics equal to or more than that of an electromagnetic soft iron or a cold rolled steel sheet even at a commercial frequency level of 50-60 Hz and having press-moldability to the stator yoke.

The hysteresis motor is provided with a rotor 6 made of a semi-hard magnetic material and a stator generating a rotary magnetic field affecting the rotor. As stator yokes 3, 4, 7 configuring the stator of the hysteresis motor together with an excitation coil 5, an Fe-Cr-based soft magnetic stainless steel plate is employed which has a constitution containing 95% ferrite phase, 50 /cm electric resistivity and a thickness t satisfying (3): t0.23f1/2, where a used frequency is f(kHz).

Inventors:

SHIGETOMI TOMOHARU
KATSUKI JUNICHI
MORIKAWA HIROSHI
TAKAHASHI IKUO

Application Number:

JP2007201649A

Publication Date:

February 19, 2009

Filing Date:

August 02, 2007

Export Citation:

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Assignee:

NISSHIN STEEL CO LTD
RANCO JAPAN LTD

International Classes:

H02K1/02; C21D6/00; C22C38/00; C22C38/50; H01F1/032; H01F1/16; H01F41/02; H02K1/14; H02K1/22

Domestic Patent References:

JP2002226954A	2002-08-14
JPH11168861A	1999-06-22
JPH07322650A	1995-12-08

Attorney, Agent or Firm:

Okada Manri

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