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Asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor

A synchronous linear motor, asymmetric technology, applied in the direction of magnetic circuit, electromechanical device, electrical components, etc., can solve the problem of permanent magnet assisted reluctance synchronous linear thrust fluctuations and other problems, so that the average thrust will not decrease, and the volume and loss will increase Large, the effect of suppressing thrust fluctuations

Active Publication Date: 2022-03-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of large fluctuations in the linear thrust of the permanent magnet assisted reluctance synchronous, and propose an asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor

Method used

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  • Asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor
  • Asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor
  • Asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor

Examples

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Embodiment 1

[0031] Such as figure 1 , 2 As shown, this embodiment is a unilateral asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor, which includes a primary assembly and a secondary assembly. The primary assembly consists of the primary core 1 and the armature winding 2 . The primary core 1 is slotted to form a primary core yoke 1-1, primary core teeth 1-2 and slots 1-3. In this example, the slots 1-3 include eleven middle slots 1-3-1, two end slots 1-3-2, and the two end slots are half slots, thirteen slots in total. The armature winding 2 is arranged in the slot 1-3, and the winding adopts a concentrated winding structure. The secondary assembly is mainly composed of the secondary iron core 3 and the permanent magnet 4. There is an air gap structure between the primary assembly and the secondary assembly.

[0032] Two sets of trapezoidal magnetic barriers are arranged respectively under each pair of pole pitches of the secondary core 3 . In ...

Embodiment 2

[0038] Such as Figure 4 As shown, the difference between the present embodiment and the first embodiment is that a double-sided dislocation magnetic barrier structure is adopted, and the double-sided asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor has a staggered displacement of the adjacent magnetic barriers on the upper and lower sides by τ / 2( τ is the secondary pole distance of the motor). The phase winding adopts fractional slot concentrated winding, the upper layer coil arrangement is: A1-X1-Y1-B1-C1-Z1-X1-A1-B1-Y1-Z1-C1; the lower layer coil arrangement is: A2-X2-Y2-B2- C2-Z2-X2-A2-B2-Y2-Z2-C2. The phase difference between the upper and lower coil currents is 90°.

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Abstract

The invention provides an asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor, which belongs to the technical field of motors. It includes a primary component and a secondary component; the primary component includes a primary core and an armature winding; the primary core is slotted to form a primary core yoke, a primary core tooth and a slot; the armature winding is arranged in the slot, and the winding adopts a concentrated winding structure. The secondary component includes a secondary core and a permanent magnet; there is an air gap structure between the primary component and the secondary component, the secondary core has km+1 slots, k is a positive integer greater than or equal to 2, m is the number of phases, including km ‑One middle slot and two end slots, of which the two end slots are half slots; this structure uses the reluctance thrust to partially replace the permanent magnet thrust, which is beneficial to reduce costs, and the asymmetric magnetic barrier structure is beneficial to reduce the cogging of the motor force to increase the thrust density.

Description

technical field [0001] The invention belongs to the field of motors, in particular to an asymmetric magnetic barrier permanent magnet assisted reluctance synchronous linear motor. Background technique [0002] In the application of linear motors that require both cost performance and performance, it is necessary to reduce the amount of high-cost, high-performance permanent magnets or replace them with low-cost permanent magnets. In rotating electrical machines, permanent magnet assisted reluctance synchronous motor is a solution to replace permanent magnet synchronous motor. The total torque of the motor is composed of reluctance torque and permanent magnet torque, of which reluctance torque accounts for a large proportion. It plays the role of reducing the amount of permanent magnets, but due to the nature of the reluctance torque, the torque ripple of the permanent magnet assisted reluctance synchronous motor is relatively large. [0003] In the field of linear motors, pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03H02K1/27H02K1/26
CPCH02K41/031H02K1/27H02K1/265H02K2213/03
Inventor 俞瀚川张卓然黄旭珍
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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