Investigation of the Effects of Different Temperature Performance Types of Magnet on Motor Performance Parameters in PMBLDC Gearless Motor from Electric Vehicle Traction Motors

Tören M., Mollahasanoğlu H., Toran S. E.

International Conference on Advanced Technologies(ICAT'22), Van, Turkey, 25 - 27 November 2022, vol.1, no.1, pp.73

  • Publication Type: Conference Paper / Summary Text
  • Volume: 1
  • City: Van
  • Country: Turkey
  • Page Numbers: pp.73
  • Recep Tayyip Erdoğan University Affiliated: Yes


The electric vehicle industry is growing rapidly with the global increase in the production of electric vehicles (EVs), along with several new automotive companies entering the industry to compete with the existing automotive industry. Within this growth, EVs technology has also gained a rapid acceleration in the last ten years. However, some concerns (fear of low driving range, not being able to charge fast and not having enough EVs charging stations, etc.) seem to leave the developing technology a little behind the point it deserves. Efforts to reduce these concerns and reach the deserved point are continuing rapidly in all areas of EVs systems. Of these, the ones made on the electric motor are at the forefront. It is seen that motor types such as induction motor, synchronous motor, DC motor, permanent magnet brushless direct current motor (PMBLDC) are used as traction motor in EVs. In this study, an 8 kW output power internal rotor motor is used, which is in the gearless class of PMBLDC. NdFeB (Neodmium Iron Boron) type magnet with N35 power density is being examined which is widely used in the magnetic system in the rotor part of this motor. The effects of the types (AH, EH, H, M, MX, SH, SHX, UH, X, etc.) in which this N35 type magnet is classified according to the temperature degrees at which it performs best in the system on the torque, efficiency and output power of the PMBLDC gearless motor performance parameters and the maximum speed values that they can reach in idle operation are analyzed comparatively. These analyses are carried out at temperatures of 20°C, 60°C and 100°C using the Ansys Maxwell analysis program, with the finite element method (FEM). The data obtained in this study will form a data set on the selection of the magnet used according to the best performance values in the design phase of this type of PMBLDC gearless motor, which can also be used as a traction motor in electric vehicle technology.