370.084 Magnetic bearings technology
This course is in all assigned curricula part of the STEOP.
This course is in at least 1 assigned curriculum part of the STEOP.

2023S, VO, 2.0h, 3.0EC

Properties

  • Semester hours: 2.0
  • Credits: 3.0
  • Type: VO Lecture
  • Format: Presence

Learning outcomes

After successful completion of the course, students are able to

  • describe the force generation of active magnetic bearings.
  • choose bearing types for defined applications.
  • understand the basic concepts of robust control.
  • design a controller for a rigid or flexible magnetically levitated high-speed rotor.
  • design an unbalance compensation for an active magnetic bearing system.
  • understand the basic concept of self-sensing magnetic bearings.

Subject of course

  • Overview of magnetic bearings: Passive and active magnetic bearings, electro dynamic bearings.

The remaining part of the course deals mainly with active magnetic bearings.

  • Fundamentals of active magnetic bearings: Earnshaw-Theorem, components of an active magnetic bearing system, force generation, bearing topologies.
  • Basic concepts of robust control: Transfer matrices of control structures, Bode's sensitivity integral, singular value decomposition, H∞-control, µ-synthesis.
  • Control of magnetically stabilized rigid rotors: Modelling of the system, control of the axial movement, control of the radial movement, decentralized control, decoupled control, control using circular forces.
  • Control of magnetically stabilized flexible rotors: Finite element method based modelling, possible control approaches.
  • Unbalance compensation: Methods of unbalance compensation, design of an unbalance compensation.
  • Position sensors for magnetic bearings and self-sensing magnetic bearings.

Teaching methods

The contents of this lecture are elaborated and discussed based on lecture notes. Simple exercises are solved on a blackboard, Complex exercises are solved computer algebra software.

Mode of examination

Oral

Lecturers

Institute

Course dates

DayTimeDateLocationDescription
Thu14:00 - 17:0027.04.2023 - 29.06.2023 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Magnetic bearings technology - Single appointments
DayDateTimeLocationDescription
Thu27.04.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu04.05.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu11.05.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu25.05.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu01.06.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu15.06.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu22.06.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung
Thu29.06.202314:00 - 17:00 Sitzungszimmer des Institutes E370-02 / CF 03 41Vorlesung

Examination modalities

Oral

Course registration

Begin End Deregistration end
27.02.2023 10:00 01.07.2023 10:00 02.06.2023 10:00

Curricula

Study CodeObligationSemesterPrecon.Info
066 503 Electrical power engineering and sustainable energy systems Mandatory elective

Literature

Die Vorlesungsfolien werden nach der jeweiligen Vorlesung hochgeladen.

Die meisten Inhalte der Vorlesung sind in folgendem Buch zu finden:

G. Schweitzer, E. Maslen: Magnetic Bearings: Theory, Design, and Application to Rotating Machinery, ISBN: 978-3-642-00497-1.

Für die rotordynamischen Grundlagen wird auf die LVA "370.083 Dynamik rotierender Maschinen" und das zugehörige Skriptum verwiesen.

Previous knowledge

A basic knowledge of the course "LVA 370.083 Dynamics of Rotating Machines" is recommended.

Preceding courses

Accompanying courses

Language

German