Resource-efficient integration of slot cooling channels in a hairpin electric motor

Abstract:
To increase the continuous power density of electrical machines, cooling channels that pass through the stator slot next to the conductors are a promising concept. This concept is applied to a hairpin-wound motor and engineered out for industrial-scale implementation using a resource-efficient design approach. The stator's design requires no additional components in comparison to a conventional motor, as the cooling channels are integrated directly into the potting material. This research paper centers on conducting a simulation analysis of this concept while also making a comparison with a conventional cooling approach. In this paper, design, thermal and electromagnetic aspects of the concept are considered.