Die cast aluminium coils for efficient electric motors

摘要

Whether pedelecs, e-scooters or drones, most types of mobility are powered by an electric motor. These motors are generally identical in their construction, using a stator with wound copper wire. In order to make these motors more efficient, there are a number of challenges to be addreBed in terms of efficiency, weight, and material and labour costs. In response to this, the researchers at Fraunhofer Ifam have developed a casting technological proceB allowing the production of lightweight windings made of aluminium with a high slot fill ratio. A study has now shown that aluminium coils increase the continuous output of electrical machines compared to copper windings, reduce the operating temperature and at the same time save weight and raw material costs.