Test Results of Elementaly Coils for Toroidal SMES

Our experimental SMES of 1kWh/1MW named “ESK” (Experimental SMES of Kyushu Electric Power Co., Inc.) is going to be completed in 1997. It has a toroidal coil system with 6 elementary coils (~ each 1/6 kWh) made by 3 manufactures independently, each of which has its own type of coil and conductor: Compacted Rutherford type for conductors, and pancake and layer-winding type for coils. The newly designed coil shape “modified D” has two straight parts in-between D parts.