course: Energy Storage Systems

teaching methods:
lecture with tutorials
computer based presentation
responsible person:
Prof. Dr.-Ing. Constantinos Sourkounis
Prof. Dr.-Ing. Constantinos Sourkounis (ETIT), M. Sc. Philip Krajinski (ETIT)
offered in:
summer term

dates in summer term

  • start: Wednesday the 22.04.2020


All statements pertaining to examination modalities (for the summer/winter term of 2020) are given with reservations. Changes due to new requirements from the university will be announced as soon as possible.

Date according to prior agreement with lecturer.

Form of exam:oral
Registration for exam:FlexNow


The students are able to select and design the best technical and economical storage system for the respective application. This applies in particular to storage systems for stochastically fluctuating energy sources (regenerative energies) and for low-emission traffic systems (hybrid vehicles).


The lecture 'Energy Storage Systems' deals with different types of storage for chemical, potential, kinetic and thermal energy and their use in power engineering systems. Building on the physical basis of the storage types, their functional principles are discussed. To structure the different types of storage systems, the performance is derived, based on the characteristic curves. For electrochemical energy storage, different types of accumulators are treated. Therefore, the different types of electrochemical processes in the accumulators will be discussed. Pumped storage systems act as a storage of potential energy and vary considerably depending on the morphological conditions of the site. In addition to the electrical subsystems, such as generators and motors, the hydraulic subsystems, such as piping systems and pumps are explained. Finally, the control of turbines, generators and motors will be discussed. Flywheel accumulators are used to store kinetic energy. Starting from the physics, the stationary and dynamic operating behavior of the electrical and mechanical subsystems as well as the entire system is considered. In addition, special technologies for the production of high-speed flywheels are introduced. For thermal energy storage systems, different principles of the storage process, such as sensitive, latent and chemical storage are presented. Furthermore, a subdivision into low and high temperature storage with examples of their different applications is given.



recommended knowledge

  • Basics of Power Engineering
  • Electric Drives
  • Basics of Thermodynamics


Because of the unusual teaching situation in the coming summer term, we kindly ask you to register your participation in the course via e-mail to the tutor ( Please provide us with your name, your matriculation number and a phone number we can use to contact you during the semester. Preferably use your RUB e-mail address and check it regularly for updates, as we will use it to provide you with further information regarding the course. We will inform you about the next steps in due time.