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Hybrid-winding linear electromagnetic brake

A linear electromagnetic and hybrid winding technology, applied in permanent magnet clutches/brakes, asynchronous inductive clutches/brakes, electric motors/converter plugs, etc., can solve the problem that the braking force characteristics cannot take into account both high speed and low speed, and the braking force cannot be adjusted , poor dynamic performance and other problems, to achieve the effect of shortening the braking distance, increasing the braking force density and reducing the cost

Active Publication Date: 2017-09-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the temperature rise caused by the existing electromagnetic eddy current braking, and the permanent magnet eddy current braking is adopted. In the permanent magnet eddy current braking, the braking force generated by the magnetic field of the permanent magnet cannot be adjusted, the dynamic performance is poor, and the braking The dynamic characteristics cannot take into account the problem of high speed and low speed

Method used

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  • Hybrid-winding linear electromagnetic brake
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specific Embodiment approach 1

[0030] Specific implementation mode one: refer to Figure 1 to Figure 3 Specifically explain this embodiment, the hybrid winding linear electromagnetic brake described in this embodiment includes a stator, a mover and a multi-phase power converter, and there is an air gap between the stator and the mover;

[0031] The stator includes a stator core 5, a cage-type short-circuit winding 3 and a multi-phase AC winding 4; the stator core 5 has a stator slot, and the cage-type short-circuit winding 3 and the multi-phase AC winding 4 are arranged in the stator slot;

[0032] The mover is composed of a mover substrate 1 and a permanent magnet 2;

[0033] The mover substrate 1 is in the shape of a flat plate, and on the side of the mover substrate 1 facing the air gap, strip-shaped primary permanent magnets 2N and S are alternately arranged along the moving direction.

[0034] Both the winding output end of the cage short-circuit winding 3 and the winding output end of the multi-phase...

Embodiment

[0036] like figure 1 As shown, the hybrid winding linear electromagnetic brake is mainly composed of a stator, a mover and a power converter. The stator is mainly composed of a stator core, a cage short-circuit winding and a multi-phase AC winding; the mover is mainly composed of a mover substrate and a permanent magnet; The bar-shaped primary permanent magnets N and S are arranged alternately.

[0037] The hybrid winding linear electromagnetic brake has a double primary structure. The cage short-circuit winding is composed of guide bars and side bars, slots are made transversely on the air gap side of each stator core, and a metal guide bar is embedded in the bottom side of each slot. Metal edging is joined together. Each tooth of the stator core is wound with a coil, and the coil side of each coil is embedded in the notch side of the stator core slot, and each coil is connected into a multi-phase symmetrical winding.

specific Embodiment approach 2

[0038] Specific implementation mode two: refer to Figure 1 to Figure 5 This embodiment is described in detail. This embodiment is a further description of the hybrid winding linear electromagnetic brake described in Embodiment 1. In this embodiment, the air gap side of the stator core 5 is horizontally provided with a stator slot, and the bottom of the stator slot A cage-type short-circuit winding 3 is provided, and a multi-phase AC winding 4 is provided at the notch of the stator slot;

[0039] The cage short-circuit winding 3 includes a plurality of guide bars 3-1 and two side bars 3-2, the two side bars 3-2 are parallel, and the plurality of guide bars 3-1 are perpendicular to the side bars 3-2; each stator A metal guide bar 3-1 is embedded in the bottom side of the slot; a coil is wound on each tooth of the stator core 5, and the coil side of each coil is embedded in the notch side of the stator core slot. The coils are connected to form a multi-phase AC winding 4, and t...

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Abstract

The invention, which relates to the motor field, relates to a hybrid-winding linear electromagnetic brake, so that problems that temperature rising is caused by electromagnetic eddy current braking, the dynamic performance is poor because the braking force caused by the magnetic field of the permanent magnet can not be adjusted with the use of permanent-magnet eddy-current braking, and the braking force characteristics can not give consideration to the high speed and low speed can be solved. Stator slots are formed in a stator iron core; and a cage type short-circuit winding and a multi-phase alternating-current winding are arranged in the stator slots. A mover is formed by a mover substrate and a permanent magnet; the mover substrate is in a shape like a flat plate; and long-bar-shaped primary permanent magnets are arranged at the side, facing an air gap, of the mover substrate along a moving direction in an N-S alternative arrangement manner. A winding output terminal of the cage type short-circuit winding and a winding output terminal of the multi-phase alternating-current winding are connected with an alternating-current input terminal of a multi-phase power converter. The hybrid-winding linear electromagnetic brake is used for generating a braking force.

Description

technical field [0001] The invention relates to a hybrid winding linear electromagnetic brake. It belongs to the motor field. Background technique [0002] Permanent magnet eddy current braking is a new type of braking technology developed in the 1990s. It uses the strong eddy current generated by the conductor moving in the permanent magnet array and the interaction between the eddy current magnetic field and the permanent magnet magnetic field for braking. There is no friction and no contact during the braking process, and the external environment has no effect on the braking effect. Permanent magnet braking requires no external energy, no noise, no vibration, no pollution, weather resistance, and no wear during braking. It is a green, environmentally friendly, and highly reliable braking technology. It has gradually become the field of braking technology. New directions for research development. [0003] Compared with electromagnetic eddy current braking, the main adva...

Claims

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Application Information

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IPC IPC(8): H02K49/04H02K49/10H02K16/00
CPCH02K11/00H02K41/025H02P3/20H02P25/06
Inventor 寇宝泉陈雯张赫张鲁
Owner HARBIN INST OF TECH
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