Eddy-Current Loss in a Conductive Material Inserted into a U-Cored Electromagnet Device

Combining the Magnetic Equivalent Circuit and Maxwell–Fourier Method for Eddy-Current Loss Calculation

“…In this work, a 3-D eddy-current losses model is developed, combining a 2-D generic MEC with a 2-D analytical model based on the Maxwell-Fourier method (i.e., the formal resolution of Maxwell's equations by using the separation of variables method and the Fourier's series). This model coupling has been applied to a U-cored static electromagnetic device [33]. The 2-D generic MEC determines the magnetic flux density distribution in massive conductive parts without the skin effect (i.e., without the eddy-current reaction field).…”

“…The current direction in the conductor is defined by ⊗ for the forward conductor and for return conductor. The U-cored static electromagnetic device as well as the experimental tests have been presented in [33]. The geometrical and physical parameters are detailed respectively in Tables 1 and 2. Math.…”

“…(a) (b) Figure 1. U-cored static electromagnetic device: (a) Experimental test [33], and (b) geometrical parameters (see Table 1 for the various parameters). [33], and (b) geometrical parameters (see Table 1 for the various parameters).…”

3-D Generic Magnetic Equivalent Circuit Taking into Account Skin Effect: Magnetic Field and Eddy-Current Losses

“…Fig. 1 shows the two-dimensional (2-D) view of the static electromagnetic device whose the experimental tests have been presented in [9]. This device is constituted by a mobile armature that allows to insert massive conductive parts (viz., aluminium) of various thicknesses.…”

“…The 3-D eddy-current losses results given by the 3-D generic MEC with the skin effect are confronted with those obtained by 3-D FEA and experimental tests. For the experimental acquisition, these losses are calculated by using the separation of losses method [9]. In the proposed model, the eddy-current losses in the massive conductive part can be calculated by [1]  …”