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CAE Methods in Electrical Machine Construction

Module name (EN): CAE Methods in Electrical Machine Construction
Degree programme: Electrical Engineering, Master, ASPO 01.10.2005
Module code: E926
SAP-Submodule-No.: P211-0236
Hours per semester week / Teaching method: 2V+3PA (5 hours per week)
ECTS credits: 5
Semester: 9
Mandatory course: no
Language of instruction:
Independent project work

[updated 13.03.2010]
Applicability / Curricular relevance:
E926 (P211-0236) Electrical Engineering, Master, ASPO 01.10.2005, semester 9, optional course
75 class hours (= 56.25 clock hours) over a 15-week period.
The total student study time is 150 hours (equivalent to 5 ECTS credits).
There are therefore 93.75 hours available for class preparation and follow-up work and exam preparation.
Recommended prerequisites (modules):
E804 Electrical Engineering Theory II

[updated 13.03.2010]
Recommended as prerequisite for:
Module coordinator:
Prof. Dr.-Ing. Vlado Ostovic
Prof. Dr.-Ing. Vlado Ostovic

[updated 13.03.2010]
Learning outcomes:
After successfully completing this module, students will be capable of a using a commercial software package to apply the finite element method to solving electrostatic, magnetostatic, time-harmonic and dynamic problems that arise in the construction of electrical machines. Students will acquire a basic understanding of the structure and functionality of such programs (pre-processor, solver, post-processor). This course provides students interested in designing and configuring power engineering equipment with the knowledge and skills needed to apply the CAE methods currently used in industry.

[updated 13.03.2010]
Module content:
1.General information on the application of the FE method in electrical power  
 1.1.Partial differential equations in power engineering: Laplace equation,
     Poisson equation, energy functional, finite element (FE) methods, finite  
     difference (FD) methods
 1.2.Iterative solution of the Laplace differential equation, structure of the  
     software used in FD method calculations
 1.3.2D problems and the FE method: geometry of the problem, material  
     properties, excitation, boundary conditions
 1.4.Iterative solution using the FE method: conjugated gradient, Newton-
     Raphson method, adaptive network methods
2.FE solutions of electrostatic problems
 2.1.The boundary potential problem
 2.2.Potential distribution within the model
 2.3.Calculating capacity
 2.4.Force, torque, electrostatic field energy  
3.FE solutions of magnetostatic problems
 3.1.Boundary conditions and excitation: current-carrying coils and permanent  
 3.2.Representing nonlinearity in the magnetization characteristic
 3.3.Field distribution, self inductance and mutual inductance
 3.4.Force and torque, stored magnetic energy
4.Time-harmonic problems
 4.1.AC current density and field strength distributions in conductive media
 4.2.One-dimensional current displacement, losses, equivalent parameters
 4.3.Two-dimensional current displacement, losses, equivalent parameters
5.Computation of transient phenomena using FEM software
 5.1.The role of magnetic energy in electromagnetic energy conversion
 5.2.The force acting on conductors in the slots of electrical machines
 5.3.The torque generated by winding currents and the torque function
 5.4.Electromagnetic torque as a function of air-gap parameters

[updated 13.03.2010]
Teaching methods/Media:
Lecture notes, overhead transparencies, video projector, PC

[updated 13.03.2010]
Recommended or required reading:
M.V.K. Chari, S.J. Salon:  Numerical methods in Electromagnetism, Academic Press, 2000
N. Bianchi:  Electrical Machine Analysis Using Finite Elements, CRC Taylor and Francis, 2005
S.J. Salon:  Finite Element Analysis of Electric Machines, Kluwer Academic Publishers, 1995
User handbooks from various software producers

[updated 13.03.2010]
[Sun Jul  3 01:19:24 CEST 2022, CKEY=ecmie, BKEY=em, CID=E926, LANGUAGE=en, DATE=03.07.2022]