MoM based EMI analysis on large wind turbine GSM 900 MHz communication backup-system

Abstract

Electro-magnetic fields resulting from a GSM transmitter mounted on a large wind turbine will be analyzed. This cellular system operates as novel communication backup in case the standard communication between operator and hub control systems is interrupted. The method-of-moments is used to analytically describe the electro-magnetic fields caused by a GSM 900 MHz transmitter mounted on the hub of a wind turbine. Using a commercial simulation tool the electromagnetic field distribution will be analyzed to determine an optimized wireless communication link to a base station. Different transmitter positions are evaluated based on their radiation patterns. Scattering and diffraction by the turbine's rotation is taken into account.

Preliminary set of analysis for the assessment of wind turbines which are in the line‐of‐sight of radar, navigation and communications systems

“…Also, there have been some studies concentrated on the performance degradation/deterioration assessment of electronic systems because of different EM interaction phenomena, for example, line‐of‐sight (LOS), Fresnel zone and shadowing [7, 11]. It has been shown that the presence of WTs can cause degradations on electronics systems’ performances depending on near‐ and far‐field scattering effects [5, 11–14]. The effects of the Doppler shift caused by the rotating blades of the WTs have also been investigated [15–17].…”

Application of Asymptotic and Rigorous Techniques for the Characterization of Interferences Caused by a Wind Turbine in Its Neighborhood

“…(i) Scattered field: to implement this kind of analysis, both high-and-low frequency techniques, such as GTD/UTD and MoM, respectively, have been used. Nevertheless, due to the tremendous size of this kind of structure [11][12][13][14], the application of MoM is limited only to low frequencies. Thus, PO and an hybridized MoM-PO approximation have been used to perform simulations of huge structures at high frequencies.…”