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Stator core for linear motor

A linear motor and stator core technology, which is applied in the field of movers, can solve the problems of insufficient efficiency and complexity of the stator core, and achieve the effect of high filling factor and reducing negative effects.

Inactive Publication Date: 2006-05-10
HOGANAS AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, building this stator core onto the coils is more complex
[0010] Furthermore, the efficiency of the stator core according to US 6 060 810 is still not high enough in terms of the ratio of the generated force to the spatial volume of the motor

Method used

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  • Stator core for linear motor
  • Stator core for linear motor
  • Stator core for linear motor

Examples

Experimental program
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Effect test

Embodiment Construction

[0065] in Figure 1a In -c, a schematic diagram of a linear motor according to an embodiment is shown. The linear motor 10 includes a stator 12 and a mover 14. Generally, the stator is stationary and drives the mover in the axial direction, but it is also possible to make the mover stand still and the stator to drive itself in the axial direction. Therefore, in the context of the present invention, the axial direction is the direction of movement of the mover or the stator. As for the mover or the stator, it depends on which of the two will move relative to the other.

[0066] The stator includes at least one coil 18a-c and at least one stator core 20a-c. The stator coil can be a single winding, that is, a wire wound into a coil and connected to a power supply unit not shown, or a distributed winding, that is, each stator coil includes a different output port connected to the power supply unit and can transmit Line(s) of current with different electrical characteristics. Those ski...

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PUM

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Abstract

The invention relates to a linear motor comprising a stator core and / or a mover. The stator core of the linear motor includes: an inner periphery; an outer periphery substantially surrounding the inner periphery; first and second teeth disposed along one of the inner periphery or the outer periphery; and slots for receiving stator coils, the The slot is a cavity provided in the stator core, wherein: the stator core is divided into a first stator part and a second stator part; the first stator part includes first teeth and is arranged to partially define the said slot and is made of soft magnetic powder; said second stator part includes second teeth and is arranged to partially define said slot; and is made of soft magnetic powder.

Description

Technical field [0001] The present invention relates to a linear motor, in particular to a linear motor, a stator core of a linear motor, and a mover of a linear motor. Background technique [0002] Generally, the soft magnetic parts also called iron cores in motors and machines are made of soft magnetic materials such as iron or iron core silicon steel insulating sheets. These insulating sheets of soft electrical materials are also called laminations. The iron core is made of laminated sheets in order to reduce the appearance of eddy currents, thereby improving the efficiency of motors and machines. [0003] In a linear motor with a ring-shaped stator core and a tubular mover, the mover is a part of the linear motor that will be moved by interacting with the magnetic field of the stator, and each metal plate is arranged in the radial and axial planes. Minimize the influence of eddy currents. [0004] In some linear motors, metal plates are stacked together in parallel to form a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/14H02K1/34H02K33/16H02K41/02
CPCH02K1/145H02K33/16
Inventor A·杰克P·G·迪金森L－O·彭纳德
Owner HOGANAS AB
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