发明名称 |
Magnets containing-type alternating-current motor and method of designing the same |
摘要 |
<p>The present invention provides a magnets containing-type motor that minimizes a cogging torque without lowering its output. In a magnets containing-type motor where permanent magnets are set in magnetic pole elements of a rotor, the dimensions of each magnetic pole element are determined to satisfy predetermined relations according to a variety of numerical elements of the motor. In accordance with a concrete arrangement, the dimensions of each magnetic pole element are determined, so as to enable either one of a magnetic pole element opening angle L2 and an equivalent magnetic pole element opening angle L3 to be expressed as (n+z).Pp + x.(g/R) + y.(gp/R), based on a predetermined relation between a parameter (t2-t1)/g and a predetermined threshold value. In this equation, gp denotes a length of a space between adjoining teeth; Pp denotes a central angular pitch of teeth; R denotes a radius of an inner face of a stator; g denotes an interval between the stator and the rotor; t2 denotes a thickness of a magnetic pole circumferential portion; t1 denotes a thickness of a magnetic pole element side portion; n denotes an arbitrary natural number; and x, y, and z are real numbers that satisfy -0.6≤x≤0.6, 0.3≤y≤0.5, and -0.06≤z≤-0.04. <IMAGE></p> |
申请公布号 |
EP0901214(B1) |
申请公布日期 |
2002.10.30 |
申请号 |
EP19980115090 |
申请日期 |
1998.08.11 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MIURA, TETSUYA;KAWABATA, YASUTOMO;INAGUMA, YUKIO;ARAKAWA, TOSHINOBU |
分类号 |
H02K1/06;H02K1/27;H02K21/14;(IPC1-7):H02K21/14 |
主分类号 |
H02K1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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