Sliding Transformer With Long Magnetic Circuit for Contactless Electrical Energy Delivery to Mobile Receivers

State-of-the-art of contactless energy transfer (CET) systems: design rules and applications

“…more than a kilowatt) [15,16,32,33]. In these cases, the necessity of a contactless transfer of electrical power usually comes from the need of supplying moving parts, such as rotating disks or sliding loads.…”

“…Conversely, forms based on the R-and L-parameters of Fig. 4 can include core losses as well [32,36,37]. By adopting the compensation topology of Fig.…”

“…The description of a CET system based on a linear transformer is formally introduced in [32], though studied in numerous other works, such as [6,53,54]. A linear transformer, is composed by a linear track that constitutes a long magnetic primary circuit, or a long primary winding loop, and one or more secondary winding wound about a "magnetic pickup" free to move on the linear track, as shown in Fig.…”

Bearing lifetime of linear PM machines

“…Also a linear motor that works either as transformer or motor has previously been presented, however it cannot operate in both modes simultaneously [14]. For slotted machines CET can be obtained via high frequency sliding transformers mounted separately along the mover of the PMLSM [15], which has also been implemented in the contactless robot of Fig. 3.…”

High efficiency contactless energy transfer system with power electronic resonant converter

“…The contactless energy transfer systems have been recently gaining popularity and investigated widely [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. This innovative technology creates new possibilities to supply mobile devices with electrical energy because elimination of cables, and/or slip-rings as well as plugs and sockets increases reliability and maintenance-free operation of such critical systems as in aerospace, biomedical, electric vehicles and robotics applications.…”