Simulation, Measurement, and Analysis of the Electromagnetic Performance of a Prototype Motor
2023 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE credits
Student thesis
Abstract [en]
This thesis deals with the simulation and analysis of the electromagnetic performance of a prototype motor. In recent years, the popularity and demand for electric vehicles have accelerated considerably due to their high energy efficiency, significant performance, and lower emissions. The prototype is a permanent magnet synchronous machine designed without rare earth elements, instead ferrite Y40 is used for the permanent magnets. While the most common materials used for permanent magnets today, such as neodymium and dysprosium, demonstrate high performance, they come with ethical, environmental, and economic challenges. Technological advances in areas such as electric motors are necessary to reduce the use of, or completely move away from the use of environmentally and ethically questionable rare earth elements. The objective of this thesis is to understand the deviation between simulated and measured results of the prototype, as well as building a foundation upon which the work on the prototype can progress further while moving on to the next step. Simulations are made in Ansys MotorCAD ® as well as Ansys Maxwell ® to determine the winding pattern that yields the highest torque. Simulations are made in both MotorCAD and Maxwell to investigate electromagnetic performance, and the results are compared and analysed. The magnetic flux density is measured on the ferrite Y40 magnets and compared to simulated results. The assembly steps of the motor are documented and assessed in a failure modes and effect analysis, FMEA, to observe and prevent possible risks associated to the assembly of the motor. The results from measuring the magnets show that the magnetic flux density is as desired in the magnets and correspond with the simulated result. The simulations of the electromagnetic performance of the motor in MotorCAD and Maxwell correspond to a high degree and will be suitable to compare to actual measured results on the motor. The goals of the thesis were met, but because of delivery delays the motor could not be fully assembled and measured during steady state testing. Instead, the thesis changed course towards a purely theoretical and analytical approach where a foundation for the future work was laid. The next step is to assemble the full prototype motor, and conduct measurements during steady state testing.
Place, publisher, year, edition, pages
2023. , p. 32
Keywords [en]
Electromagnetic Performance, Prototype Motors
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hv:diva-20215Local ID: EXE700OAI: oai:DiVA.org:hv-20215DiVA, id: diva2:1775706
Subject / course
Electrotechnology
Educational program
Master Programme in Electric vehicle engineering
Supervisors
Examiners
2023-06-272023-06-272023-06-27Bibliographically approved