Dynamic Variable-Speed Drives

The aim of this lecture is to convey knowledge in the following areas:

  • Most important drive components of controllable drives
  • Circuit technology for speed-controlled DC and AC main drives
  • Circuit technology for position-controlled DC and AC positioning drives
  • Power electronic circuits for the operation of DC and AC drives
  • Describing dynamically servo and main motors by using their differential equations
  • Guide systems for the field-oriented operation of AC drives
  • Functionality of the most important sensors for the detection of speed and position
  • Describe the operating behaviour of servo and main drives
  • Evaluate the advantages and disadvantages of direct drive technology

The following content is presented:

  • Development of actuators and control drives
  • Variance of the drive components
  • Transition from plant technology to mechatronics
  • Classification of the dynamic control drives into main and servo drives
  • DC main drives
  • AC main drives
  • Step servo drives
  • DC servo drives
  • AC servo drives
  • AC servo drive in block current technology
  • AC servo drive in sine current technology
  • Linear direct drives
  • Current drive developments


Recommended literature:

W. Leonhard: Regelung elektrischer Antriebe; Springer
W. Roddeck: Einführung in die Mechatronik; Teubner
Brosch: Moderne Stromrichterantriebe; Vogel
Schönfeld, Hofmann: Elektrische Antriebe und Bewegungssteuerungen; VDE
Heumann: Grundlagen der Leistungselektronik; Teubner
Riefenstahl: Elektrische Antriebstechnik; Teubner
Schröder: Elektrische Antriebe - Regelung; Springer
Isermann: Mechatronische Systeme; Springer

D. Gerling: Electrical Machines - Mathematical Fundamentals of Machine Topologies; Springer
W. Leonhard: Control of Electrical Drives; Springer
K. K. Tan, A. S. Putra: Drives and Control for Industrial Automation; Springer
W. Piotr: Dynamics and Control of Electrical Drives; Springer


Prof. Dr.-Ing. Stefan Götz
Building 11, Room 376
Phone: 2080
Mail: goetz(at)eit.uni-kl.de


M. Sc. Akshata Ankush Sangle
Building 11, Room 368
Phone: 2098
Mail: sangle(at)eit.uni-kl.de

M. Sc. Davood Keshavarzi
Building 11, Room 366
Phone: 3401
Mail: keshavarzi(at)eit.uni-kl.de

Lecture Notes

Downloads concerning lecture and exercises can be found in the corresponding OLAT course.