Novel design method of intelligent alternating-current and direct-current electromagnetic apparatus

Abstract

The invention relates to a novel design method of an intelligent alternating-current and direct-current electromagnetic apparatus. An open type background database including electromagnetic systems and contact systems of different structures, shapes and materials is set up, counter force systems and the contact systems are designed according to the needs of on-off currents for counter force and the shape of contacts, the electromagnetic systems meeting the needs are designed according to the counter force systems, and multi-physic-field coupling simulation analysis and structural optimization design are carried out; through multi-software united calling, a multi-physic-field coupling relation between an electric electronic circuit and an electromagnetic apparatus body is introduced into dynamic calculation, and unit time step length closed-loop simulation of a nonlinear time domain of an intelligent control module and the apparatus body is carried out; an arc magnetic fluid kinetic model is built, arc motion conditions under different breaking control schemes are analyzed by combining a dynamic grid technology according to the motion track of the contacts, meanwhile, a breaking process arc equivalent model is obtained according to the arc parameter distribution conditions under different contact strokes at different moments, and arc energy is analyzed. An integrated simulation system with process control and a multi-field coupling electromagnetic apparatus virtual prototype is really built.

Description

Technical field [0001] The invention relates to a new design method of intelligent AC and DC electromagnetic appliances. Background technique [0002] With the rapid development of smart grids, the intelligent process of electromagnetic appliances has received extensive attention. The design methods and design concepts of traditional appliances are far from meeting the design requirements of smart electromagnetic appliances. Intelligent electrical appliances are composed of electromagnetic mechanism, contact system, linkage mechanism, intelligent control module, etc. The intelligent control module also contains control chip, hardware circuit and software control strategy. Therefore, the pure design of electromagnetic electrical The structure cannot achieve the overall optimization design goal. The distribution of the magnetic field, the non-linearity of the magnetic circuit, the existence of the magnetic separation ring, the hysteresis eddy current and the air gap permeability i...

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Problems solved by technology

This design mode limits the further application of virtual design technology in intelligent electromagnetic appliances

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