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Stator of claw-pole shaped motor

A motor, salient pole type technology, applied in electric components, synchronous motors with stationary armatures and rotating magnets, electromechanical devices, etc. problem, to achieve the effect of increasing the output torque and reducing the distribution of magnetomotive force

Inactive Publication Date: 2006-10-25
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art described above, three unit stators of U-phase, V-phase, and W-phase are laminated in the axial direction to form a stator. The stator has two teeth and two types of protrusions, so the thickness in the axial direction becomes thicker, and there is a problem that the size of the stator in the axial direction is enlarged when three such unit stators are stacked.
In addition, since the magnetic circuits of the unit stators of each phase are independent, there is a problem that these magnetic circuits cannot be effectively used
[0005] In particular, when such an electric motor is arranged between the engine and the transmission of a hybrid vehicle, it is desired to make it as thin as possible, but it is difficult to meet this requirement because the stator of the above-mentioned prior art is thick.

Method used

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  • Stator of claw-pole shaped motor
  • Stator of claw-pole shaped motor
  • Stator of claw-pole shaped motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Figure 27A A magnetic circuit of a conventional m-phase wave winding motor is shown. m is a natural number greater than or equal to 2, and the windings of each phase pass through m staggered slots in a wave shape in such a way that the excitation direction is opposite. At this time, the interlinkage flux of the k-th (1≤k≤m) phase winding is represented by φk-φk+m.

[0083] Figure 9 (A) and (B) represent the magnetic circuit of the m-phase wave-winding salient-pole type motor in which the above-mentioned general m-phase wave-winding motor is developed in the axial direction and provided with 2m teeth and 2m-1 slots. It is known that the interlinkage flux of each phase is constant. That is, the linkage flux of the kth (1≤k≤m-1) phase winding is φk-φ2m-(φk+m-φ2m)=φk-φk+m, and Figure 27A The situation is consistent. In contrast to the case where windings other than the m-th phase exist in two slots, the windings of the m-th phase exist in only one slot.

[0084] Ba...

Embodiment 2

[0105] In the first embodiment, A of the stator 19 + Phase, B + Phase, A - Phase and B - The phase teeth 31b..., 32b..., 33b..., 34b... are arranged so as to be out of phase in the circumferential direction, and the protrusions 31c... , 32c . . . , 33c . . . , 34c . . . have a width equal to the thickness of the stator 19 in the axis L direction. In addition, the width of the permanent magnets 18 of the rotor 17 is equal to the width of the projections 31c..., 32c..., 33c..., 34c..., and the permanent magnets 18 are shared by the projections 31c..., 32c..., 33c..., 34c... of the respective phases. .

[0106] In contrast, in the second embodiment, A of the stator 19 + Phase, B + Phase, A - Phase and B - Phase teeth 31b . . . , 32b . , 33c..., 34c... are also arranged so that the phases are the same. On the other hand, the permanent magnets 18 arranged on the outer periphery of the rotor 17 ... the protrusions 31c ..., 32c ..., 33c ..., 34c ... corresponding to the res...

Embodiment 3

[0110] The third embodiment is a modification of the above-mentioned second embodiment. In the second embodiment, the phases of the protrusions 31c..., 32c..., 33c..., 34c... of each phase are aligned, and the phases of the permanent magnets 18... They are shifted by 360° / 2m=90° respectively. In contrast, in the third embodiment, the phases of the protrusions 31c..., 32c..., 33c..., 34c... of each phase are shifted by 360° / 2m=90°, so that each The phases of the permanent magnets 18 . . . of the phase coincide. Also according to this third embodiment, the same effect as that of the second embodiment can be achieved. And if the permanent magnets 18... are not divided into four stages, and the same permanent magnets 18... as the stator 19 of the first embodiment are used, the number of parts can be reduced.

[0111] Additionally, when Figure 27B shown divided in the circumferential direction Figure 27A In the case of the magnetic circuit of a conventional m-phase wave windin...

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Abstract

2m sets (m being a natural number of 2 or more; and m = 2 in embodiments) of teeth (31b to 34b) and 2m-1 slots (41, 42, 43) are disposed alternately in an axial direction; those of windings (36, 37, 38) accommodated in the slots (41, 42, 43), which are each accommodated in the slots (41, 42, 43) spaced apart by m from each other, are connected in line, so that exciting directions are opposite; and phases of magnetic fluxes passed through the teeth (31b to 34b) are displaced by 360 DEG / 2m from one another. Therefore, a thin and high-powered claw pole motor can be produced by disusing a portion of the winding which does not contribute to a torque (i.e., a crossover portion) and commonly using a magnetic path in each phase through return passes (31a to 34a). Moreover, a magnetic circuit of a wave winding motor is formed and hence, the output torque can be increased, as compared with a salient pole concentrated winding motor.

Description

technical field [0001] The present invention relates to a stator of a salient pole motor, which accommodates a plurality of windings wound in a plane perpendicular to the axis in a plurality of slots formed between a plurality of teeth, the plurality of teeth being aligned in the axial direction. on side-by-side configuration. Background technique [0002] According to the following Patent Document 1, a stator of such a salient pole motor is disclosed. It has three unit stators corresponding to each of the U-phase, V-phase, and W-phase, each having two teeth spaced apart in the axial direction and a return path connecting these teeth at radially outer ends , and formed into a U-shaped cross section. In addition, an independent magnetic circuit is formed by energizing an annular winding housed inside a unit stator having a U-shaped cross section, so that the polarity protruding from the radially inner ends of the two teeth facing the rotor Different two protrusion magnetiz...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K3/18H02K3/28H02K9/19H02K9/22H02K16/04H02K21/16
CPCH02K1/145H02K16/04H02K2201/06
Inventor 今井信幸青木新菊地博幸关正広高桥忠伸田嵨茂
Owner HONDA MOTOR CO LTD
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