Super high-speed electric motor with amorphous magnetic circuit for the hydrogen fuel cell air supply system

Abstract

Hydrogen fuel cells are one of the important directions of development of the global energy. Hydrogen fuel cells are being actively implemented in the aviation systems, for example in Airbus A320. Boeing and Airbus announced creation of an auxiliary power unit fuel cell with capacity up to 200 kW in 2017–2018. In the automotive industry hydrogen fuel cells are also widely used. But the efficient use of hydrogen fuel cells is not possible without establishment of effective systems related to their operation.Therefore, our article proposes a new topology of high-speed motor for compressor of the hydrogen fuel cell. An original solution to raise the energy efficiency of high-speed motor presented in our article, the novelty of which is the use of amorphous alloys. Research of the new design methods of computer modeling in Ansys Maxwell was conducted; optimal geometric dimensions of the high-speed motor with two-pole and four-pole magnetic system were obtained in this article. In the modeling losses on eddy currents in permanent magnets and iron of the rotor for two-pole and four-pole magnetic systems were taken into account. All the theoretical results have been experimentally verified. For this purpose the layout of the high-speed motor with the perforated winding was created. Design of the experimental model is also described in this article. The high-speed motor testing and analysis of test data take a special place in this article. In the experimental tests was found that the efficiency of our topology is 92.8% and the power density of our high-speed motor is 0.21 kg/kW with air cooling. These experimental tests prove the effectiveness of our topology compared to the known world analogues. Also in the article was proven that the use of our topology allows minimizing the mass of a hydrogen fuel cell with improved energy efficiency. This is especially important for the aerospace applications and automotive industry.