Simplified presentation of the eddy-current-loss equation for laminated pole-shoes

Eddy Current Phenomena in Laminated Structures Due to Travelling Electromagnetic Fields

“…Eddy current phenomena in laminated cores subjected to sinusoidally time varying electromagnetic fields have been studied by many authors [4][5][6][7]. Theoretical and experimental investigations of eddy currents in laminated pole-shoes are reported in literature [8][9][10][11][12]. Bondi and Mukherji [10] have analyzed electromagnetic fields in the laminated poleshoe using a model with negligible thickness of insulation on iron surfaces of each pole-shoe lamination and infinite air gap length.…”

“…Analyses presented in these two references are quite involved. A simplified version of the eddycurrent loss equation for laminated pole-shoes is presented by Greig and Freeman [12].…”

Eddy Currents in Laminated Rectangular Cores

“…Eddy currents are also produced due to periodically time-varying excitations [8][9][10][11][12][13][14][15][16][17]. Alternating magnetic flux in transformer cores induces eddy currents resulting in eddy current loss.…”

“…Theoretical and experimental investigations of tooth-ripple phenomena in laminated pole-shoes are reported [12][13][14][15][16][17] in literature. In their treatment for eddy currents in laminated pole-shoes, authors [15,16] have considered infinite half-space filled with identical laminations of arbitrary thickness.…”

“…Resulting equations for eddy current loss are quite complicated. Simplified version of these equations has been also reported [17].…”