Analysis of Static Magnetic Field of Electric- Machine Converter

Abstract. Electricity-machinery converter is the input unit of electro-hydraulic proportional valve and mechanical and electrical switching device, and the input electrical signal is proportionally converted into mechanical quantity by electricity-machinery converter. The moving coil electromechanical converter is used as the main research object in this paper. The static magnetic fields of electric-machine converter are analyzed that includes four aspects. These aspects include the structure of thrust coil framework, the permanent magnet material, single magnetization technique of permanent magnet, a number of permanent magnet magnetization array structures. Introduction of Electric- Machine Converter With the rapid development of hydraulic transmission technology, electro-hydraulic proportional valve as a representative of the electric- machine conversion component which has been widely used in mechanical engineering. Electric- machine converter as input unit of electro-hydraulic proportional valve and mechanical and electrical switching device, the input signal (voltage, current) is continuou