Method for calculating transmission torque of permanent-magnet magnetic coupler

A technology for magnetic coupling and torque transmission, applied in permanent magnet clutches/brakes, calculations, computer-aided design, etc., can solve the problems of complex modeling and low calculation efficiency, and achieve simple calculation methods, high calculation efficiency, The effect of low time cost

Active Publication Date: 2019-08-30
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the defects of the prior art, the present invention invents a method for calculating the transmission torque of a permanent magnet magnetic coupler, which improves the defects of complex modeling and low calculation efficiency of the finite element calculation method, and is based on the topology of the permanent magnet magnetic coupler characteristics, build a magnetic c...

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  • Method for calculating transmission torque of permanent-magnet magnetic coupler
  • Method for calculating transmission torque of permanent-magnet magnetic coupler
  • Method for calculating transmission torque of permanent-magnet magnetic coupler

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Embodiment Construction

[0055] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0056] In this embodiment, the transmission torque of a permanent magnet magnetic coupler with an input speed of 1500 r / min and a symmetrical structure of double conductor disks with 5 magnetic pole pairs is selected for calculation.

[0057] Among them, the basic dimensions of the permanent magnet magnetic coupler with an input speed of 1500r / min and a double-conductor disc symmetrical structure with 5 pole pairs are: the dimension a of the inner edge of the permanent magnet = 40mm, the dimension b = 60mm of the outer edge of the permanent magnet, and the diameter of the permanent magnet The vertical dimension to the edge L=57mm, the resistivity of the conductor disc ρ=1.75×10 -2 Ω·mm 2 / m, conductor plate thickness l c =6mm, vacuum permeability μ 0 =4π×10 -7 H / m, the relative magnetic permeability of the conductor disk μ rc =0.999999, the pole d...

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Abstract

The invention discloses a method for calculating the transmission torque of a permanent magnet magnetic coupler, and belongs to the technical field of permanent magnet transmission. The method comprises the following steps of firstly, enabling a fan-shaped eddy current region generated on a conductor disc to be equivalent to a circle, and calculating the total eddy current loss power of the conductor disc region according to the Faraday law of electromagnetic induction; and according to a topological structure of the permanent magnet magnetic coupler, establishing a magnetic circuit equivalentmodel containing the main magnetic flux, the leakage magnetic flux, the effective magnetic flux and the induced magnetomotive force; according to the design size of the permanent magnet magnetic coupler, calculating the permanent magnet magnetomotive force, the eddy current area induction magnetomotive force, the main magnetic flux magnetic resistance and the leakage magnetic flux magnetic resistance, and calculating the transmission torque of the permanent magnet coupler, and comparing the transmission torque with the result of a finite element calculation method. The method is a calculationmethod with the engineering practical application value, and is simple and is high in calculation efficiency and low in time cost.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet transmission, and relates to a method for calculating the transmission torque of a permanent magnet magnetic coupler. Background technique [0002] With the continuous improvement of industrial level and scientific and technological strength, high-end equipment in the field of major national projects has put forward higher requirements for efficient and highly reliable transmission technology. Permanent magnet coupling transmission technology is widely used in petroleum, chemical, coal, electric power and other major projects due to its advantages of high efficiency and energy saving, strong environmental adaptability, good speed regulation performance, smooth start, overload protection, low cost and low vibration interference, etc. field. Among them, permanent magnetic coupling is an important classification of permanent magnetic coupling transmission technology. The effective calculati...

Claims

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Application Information

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IPC IPC(8): G06F17/50H02K49/10H02K49/04
CPCH02K49/102H02K49/108H02K49/046G06F30/17G06F30/23
Inventor 刘巍程习康刘思彤罗唯奇张洋周志龙逯永康贾振元
Owner DALIAN UNIV OF TECH
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