Stator for an energy converting apparatus and energy converting apparatus using the same

A method for manufacturing a stator for an energy converting apparatus, the method comprising:

• forming an support structure having an annular shape around an axial direction;
• forming a first protrusion coupled to the support structure and extending radially;
• forming, spaced apart from the first protrusion in a circumferential direction, a second protrusion coupled to the support structure and extending radially;
• forming a first coil from a plurality of first radial layers of a first wire;
• imposing the first formed coil on the first protrusion,
• wherein the forming and the arranging the plurality of first layers of the first wire is performed such that a circumferential extent of a cross-sectional area of the first wire increases radially from a value at a radially innermost layer of the first radial layers to a value at a radially outermost layer of the first radial layers
• the forming of the first radial layers comprises:
• bending the first wire around an auxiliary structure a plurality of times such that the radially innermost layer is formed, and
• bending the first wire around the auxiliary structure at a different radial position a plurality of times such that a radial layer of the first radial layer is formed after a previously from layer until the radial outermost layer is formed.