Winding arrangement for an electrical machine

• Main Authors: Ahmad Abduallah, Yoshiyuki Komi
• Format: Patent
• Language: English
• Published: 28.08.2024
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

A stator (Fig.1, 105) or rotor (Fig.1, 155) for an electrical machine (Fig.1, 100) comprises a stator or rotor body, and windings (Fig.1, 140) mounted on the body. The one or more windings is arranged in a plurality of turns, and for a subset of the turns, the windings comprise a heat pipe 250 (and Fig.3, 350). The heat pipe may be a conductor (Fig.4B, 420) with an internal sealed channel (Fig.4B, 410) comprising a fluid. The channel may further comprise a wick (Fig.4B, 430) to provide a capillary effect. A turn of the windings closest to an air gap (Fig.5A, 540) of the electrical machine may be a heat pipe and said turn may at least partially define the air gap. The turns may be formed in a slot (Fig.5A, 520), and may be located at different radial and/or circumferential positions of the stator. The turns may be arranged in an alternating and/or repeating pattern of heat pipes and solid conductors, which may have a ratio of 3:1 solid conductors to heat pipes. The concentration of heat pipes may be greater closer to an air gap of the machine (Fig.5B). End winding portions of the turns may be a solid conductor. The electrical machine may comprise a stator and rotor both with a subset of heat pipe windings.