Combined edge modelling technique for electromagnetic signature study of the large direct current machines
Conference
Barzegaran, MR, Mohammed, OA. (2014). Combined edge modelling technique for electromagnetic signature study of the large direct current machines
. 2014-January 599-604.
Barzegaran, MR, Mohammed, OA. (2014). Combined edge modelling technique for electromagnetic signature study of the large direct current machines
. 2014-January 599-604.
In order to study the reduction of radiated electromagnetic fields of a large direct current (DC) machine, its comprehensive equivalent source modeling is investigated. The edge modeling was used as the method of modeling which is implemented using finite element (FE) analysis. The individual models of the machine's winding are designed and then combined together. Both magnetic and electric field spectrums along lines and spaces were studied. Moreover, designed switches, in the model, were considered to enable turning each winding in the machines on and off to study the effect of each winding on the radiated field at far distance. The results from the equivalent source representation confirm that the proposed model shows the same result in comparison with full FE machine model. The simulation time from the equivalent source model was shown to be almost a hundred times less than the full FE model. This makes the proposed model ideal for the development of accurate tools for the estimation of radiated electromagnetic field emissions from multi electric machine environments during their development stage which is important for EMC evaluation. For verification purposes, the equivalent source model was used in multi machine system and the results of the equivalent source model of multi machine case match the results from the full FE model of the same case.
