Simulation of electromagnetic radiation environment in electric tractor
1.School of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang， Henan 471003, China; 2. School of Mechanical and Precision Instrument Engineering, Xi′an University of Technology, Xi′an， Shaanxi 710048, China
Abstract： To solve the problems of multiple electromagnetic radiation interference sources and complex electromagnetic environment in electric tractor, a multisoftware cosimulation method was proposed. The threedimensional model was geometrically processed in Hypermesh, and a finite element model was established. Based on the basic theory of electromagnetic radiation, an equivalent electromagnetic model of the main interference source was established in HFSS and FEKO. The electromagnetic radiation performance was simulated and analyzed, and the surface current distribution of the 100 MHz to 550 MHz electric tractor body and the electric field intensity distribution of the driver′s head, chest and feet in cockpit were obtained. The results show that the surface current of the tractor body has local prominent characteristics. The surface current of the front part of body is the largest at about 250 MHz, and the value is 0.50 A·m-1. The surface current of the rear cockpit is the largest at about 450 MHz, and the value is 0.42 A·m-1. The electric field intensity near the feet of tractor is the largest with the value of 1.79 V·m-1, and the corresponding frequency is 122 MHz.
