JPWO2023145014A5

JPWO2023145014A5 -

Info

Publication number: JPWO2023145014A5
Application number: JP2022541905A
Authority: JP
Filing date: 2022-01-28
Publication date: 2023-12-26

Description

上述した課題を解決し、目的を達成するために、本開示にかかるリニアモータは、各々が等間隔に配列された複数の永久磁石を有する界磁磁極と、複数のティースを有する電機子コアと、複数のティースのうち２以上のティースの各々に巻かれたコイルとを有し、界磁磁極に向かい合わせられて界磁磁極に対して相対的に移動する電機子と、を備える。電機子コアが有するティースの数と、複数のティースと向かい合う磁極の数であって電機子の進行方向に配列された磁極の数との組み合わせにおいて、進行方向における電機子コアの幅の範囲内にある磁極の数は、非整数である。コイルが巻かれたティースの数が５以下である。 In order to solve the above-mentioned problems and achieve the objects, a linear motor according to the present disclosure includes field magnetic poles each having a plurality of permanent magnets arranged at equal intervals, and an armature core having a plurality of teeth. and a coil wound around each of two or more of the plurality of teeth, and an armature that faces the field magnetic pole and moves relative to the field magnetic pole. In the combination of the number of teeth that the armature core has and the number of magnetic poles that face the plurality of teeth and are arranged in the direction of movement of the armature, within the range of the width of the armature core in the direction of movement. The number of magnetic poles is a non-integer number. The number of teeth around which the coil is wound is 5 or less.

Claims

field magnetic poles each having a plurality of equally spaced permanent magnets;
an armature core having a plurality of teeth; a coil wound around each of two or more of the plurality of teeth; an armature that moves in a fixed manner;
In the combination of the number of teeth that the armature core has and the number of magnetic poles facing a plurality of teeth and arranged in the direction of movement of the armature, the armature in the direction of movement of the armature The number of magnetic poles within the width of the core is a non-integer,
A linear motor characterized in that the number of teeth around which the coil is wound is five or less .

Each of the teeth around which the coil is wound has the same shape as each other,
The width of the armature in the traveling direction is shorter than the width of the field magnetic pole in the traveling direction,
Among the plurality of teeth, the number of teeth around which the coil is wound is Nt, the distance between teeth at both ends in the traveling direction among the teeth around which the coil is wound is L, and the number of teeth with different polarities in the traveling direction is The linear motor according to claim 1, wherein the value of {L×Nt/(Nt-1)}÷τp is a non-integer, where τp is the distance between the magnetic poles.

The number of turns of the coil in each of the plurality of phases is adjusted so that the amplitude of the projected component of the phase induced voltage vector on the phase of the voltage for driving the linear motor is the same in each of the plurality of phases. The linear motor according to claim 1 or 2, characterized in that:

The linear motor according to any one of claims 1 to 3, wherein the plurality of teeth include the teeth around which the coil is wound and the teeth around which the coil is not wound.

The number of teeth that the armature core has is not an integral multiple of the number of phases, and the plurality of teeth include the teeth around which the coils of two or more phases among the plurality of phases are wound. A linear motor according to any one of claims 1 to 3.

comprising an array type armature composed of a plurality of armatures arranged in the traveling direction and sharing the field magnetic pole;
6. The linear motor according to claim 1, wherein the number of magnetic poles within the width of the arrayed armature in the traveling direction is a non-integer.

The linear motor according to any one of claims 1 to 6, wherein all the coils attached to the plurality of teeth have the same wire diameter.