PERMANENT MAGNET MOTOR, PERMANENT MAGNET MOTOR MANUFACTURING METHOD, AND COMPRESSOR

WIPO Patent Application WO/2019/073579

A1

In this permanent magnet motor, the number S of slots formed on the stator and the number P of poles of the rotor satisfy the relationship of S > P. The rotor has a multistage skew structure in which rotor constituent bodies of respective stages arranged in the axial direction of a rotating shaft are disposed by being shifted in the circumferential direction. When θs is given by 360º/(the least common multiple of S and P) and θp_MAX is given by 360º/(2 x P), the skew angle θskew between the rotor constituent bodies at the highest and lowest stages satisfies the relationship of θs – (θp_MAX –θs) <θskew ≤ θs + (θp_MAX – θs). In addition, a method for manufacturing the permanent magnet motor forms a rivet insertion hole formed in a rotor core in an elongated hole shape along the circumferential direction about the rotational axis of the rotor and gives a skew to the rotor core after inserting a rivet into the rivet insertion hole.

JPH0583911	ELECTRIC ROTARY MACHINE
WO/1997/008432	PERMANENT MAGNET ROTOR ALTERNATOR
JP2002314846	IMAGING UNIT AND DRIVE UNIT

TAMURA YUKI (JP)
WATANABE TAKANORI (JP)
MASUMOTO KOJI (JP)
DOMOTO SHOJIRO (JP)

PCT/JP2017/037028

April 18, 2019

October 12, 2017

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MITSUBISHI ELECTRIC CORP (JP)

H02K21/14; H02K1/27; H02K15/03

WO2015104956A1

2015-07-16

JP2010207090A	2010-09-16
JP2002315285A	2002-10-25
JP2005057942A	2005-03-03

KISA PATENT & TRADEMARK FIRM (JP)

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