PERMANENT MAGNET MOTOR

WIPO Patent Application WO/2013/094075

A1

The objective of the present invention is to obtain a permanent magnet motor that reduces an electromagnetic excitation force of a low spatial order and reduces the impact of harmonics of a magnetomotive force of a rotor so as to reduce torque ripples. For a permanent magnet motor (10) configured such that a current is supplied to one of armature windings (30-1) from a first inverter and a current is supplied to the other armature winding (30-2) from a second inverter, when the number of poles of a rotor (11) is denoted as M and the number of slots (25) of a stator core (22) is denoted as Q, M and Q satisfy a relationship expressed by M < Q, and the greatest common denominator of M and Q is equal to or greater than three. Further, the rotor (11) is provided with a rotor core (12) on the side closer to a stator (21) than to the intermediate diameter between the maximum outer diameter and the minimum inner diameter of permanent magnets (13), and the phase difference between the currents supplied from the first inverter and the second inverter is controlled so as to take a value between 20° and 40° in terms of electric angle.

NAKANO MASATSUGU (JP)
ASAO YOSHIHITO (JP)
AKUTSU SATORU (JP)
TAKIGUCHI RYUICHI (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)

PCT/JP2011/079948

June 27, 2013

December 23, 2011

Click for automatic bibliography generation  

MITSUBISHI ELECTRIC CORP (JP)
NAKANO MASATSUGU (JP)
ASAO YOSHIHITO (JP)
AKUTSU SATORU (JP)
TAKIGUCHI RYUICHI (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)

H02K1/27

JP2006101654A	2006-04-13
JP2006238667A	2006-09-07
JP2010226899A	2010-10-07
JP2008011692A	2008-01-17
JPH09327139A	1997-12-16
JP2002534047A	2002-10-08
JPH05344668A	1993-12-24
JPH07264822A	1995-10-13
JP2006050709A	2006-02-16
JP2011114941A	2011-06-09

See also references of EP 2797208A4

OIWA Masuo et al. (JP)
Masuo Oiwa (JP)

View/Download PDF      PDF Help

Previous Patent: STRADDLED VEHICLE

Next Patent: CONTROL DEVICE FOR VEHICLE