PERMANENT MAGNET TYPE ROTARY ELECTRICAL MACHINE AND COMPRESSOR USING THE SAME

Japanese Patent JP2017055583

A

PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electrical machine and a compressor using the same.SOLUTION: A permanent magnet type rotary electrical machine includes a stator having a stator iron core and an armature winding provided to the stator iron core, a rotor iron core 12, and permanent magnets 14 which are embedded in the rotor iron core and whose number corresponds to the number of poles of the rotor, and further includes a rotor 3 opposed to the stator via a gap. When the magnetic flux axis of the permanent magnet is set as a d-axis and an axis which is orthogonal to the d-axis at an electric angle is set as a q-axis, the rotor iron core has a concave portion 11 concaved to the inner peripheral side on the q-axis, and the concave portion is configured by two linear portions 11b, 11c along the thickness direction of the permanent magnet, and a curved portion 11a connected to each end portion of the two straight portions on the inner peripheral side of the rotor. The angle θp1 between the end portions of the magnetic pole surfaces on the outer peripheral side of the permanent magnet and the angle θp2 between the respective end portions of the two linear portions on the outer peripheral side of the rotor satisfy the relationship of 0.18≤θp2/θp1≤0.5.SELECTED DRAWING: Figure 2

TAKAHATA RYOICHI
ADACHI TAKAMASA
NAKANO YASUNORI
NAKAMURA SATOSHI

JP2015178498A

March 16, 2017

September 10, 2015

Click for automatic bibliography generation  

JOHNSON CONTROLS HITACHI AIR CONDITIONING TECH (HONGKONG) LTD

H02K1/27; H02K1/22

JP2005027422A	2005-01-27
JPH09224338A	1997-08-26
JP2005184918A	2005-07-07
JP2014217189A	2014-11-17

US20090140590A1

2009-06-04

Polaire Patent Business Corporation

Previous Patent: An electric motor provided with a stator and it

Next Patent: A 3 phase noise filter and an alternating current motor driver system using it