SUPER HIGH-VOLTAGE ELECTRIC MOTOR WITH AMORPHOUS MAGNETIC WIRES FOR THE AIR SUPPLYING SYSTEM OF HYDROGEN FUEL ELEMENTS

Abstract

The paper deals with the hydrogen fuel cells that 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 the 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. However, the efficient use of hydrogen fuel cells is not possible without the establishment of effective systems related to their operation. Therefore, the paper proposes a new topology of high-speed motor for compressor of the hydrogen fuel cell and presents an original solution to raise the energy efficiency of high-speed motor, based on the amorphous alloys. The 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 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. The high-speed motor testing and analysis of test data take a special place in this paper. In the experimental tests, it was found that the efficiency of the topology is 92.8 % and the power density of the high-speed motor is 0.21 kg/kWh with air cooling. These experimental tests prove the effectiveness of the topology compared to the known world analogues. Moreover, the use of this topology is proven to allow minimizing the mass of a hydrogen fuel cell with improved energy efficiency. This is especially important for the aerospace applications and automotive industry.