Presentation of master’s theses of the BFH Energy Storage Research Centre

Master of Science in Engineering graduates will present their master’s theses on energy storage.

11.08.2021, 3pm-5.45pm – Dual event format: Switzerland Innovation Park Biel/Bienne (auditorium, ground floor) and online

Factsheet

  • Start date 11.08.2021, 3pm-5.45pm
  • Place Dual event format: Switzerland Innovation Park Biel/Bienne (auditorium, ground floor) and online

Programme

15.00 – 15.10

Welcome address: Prof. Michael Höckel

15.10 – 15.40

Fuel cell testing rig 2.0 (in German)
Marc Studer (Hydrogen Lab)

15.45 – 16.15

Current harmonics in distribution networks (in German)
Tyler Bacciarini (Power Grids Lab)

16.15 – 16.30

Interval

16.30 – 17.00

EVs – smart charging, optimised operational management for EV charging stations (in German)
David Zurflüh (PV Lab)

17.05 – 17.35

Cloud-based battery management systems using big data and machine learning (English)
Prathyusha Nerella (Battery and Storage Systems Lab)

17.35 – 17.45

Summary and closing address: Prof. Dr. Andrea Vezzini

The presentations will be held in German or English.

The schedule will be strictly adhered to and there is also the option of viewing only parts of the programme.

Each presentation will last around 25 minutes, followed by a five-minute Q&A session hosted by the lecturer.

Event participants can ask questions via the Q&A function. The lecturer will select questions which will then be answered by the students. As the time for questions is limited to five minutes, questions can also be asked directly afterwards by e-mail.

Presentation summaries

To improve the development of hydrogen systems, the fuel cell testing rig at Bern University of Applied Sciences has been upgraded to the latest technical standards. New components have been integrated into the system, enabling electrolytic cells to be tested as well as fuel cells. The platform is based on a Raspberry Pi and programmed in Python. The new system provides a flexible basis for future projects and upgrades.

Supervisor: Prof. Michael Höckel

Non-linear loads are increasingly being connected to the power grid. The current harmonics created by these loads can have a significant impact on voltage and network elements. The long-term measurements recorded by a distribution network operator were analysed in depth to assess current harmonics. Another network operator measured severely distorted current on a medium-voltage power line that was caused by current harmonics. The impact on the low-voltage grid was analysed and the sources of these distortions identified based on three measurement campaigns on medium-voltage and low-voltage grids.

Supervisor: Prof. Michael Höckel

With the rapid increase in the number of photovoltaic systems and the fast-growing market for electric vehicles, there is also a greater need for intelligently controlled charging stations to avoid overloading the power grid. Three photovoltaic systems and three charging stations were fitted with grid analysers at BHF’s Tiergarten campus in Burgdorf in December 2020 with a view to achieving better alignment between photovoltaic energy production and the charging processes. For this thesis, smart system management concepts were drawn up and the measurement data recorded over six months was analysed.

Supervisor: Prof. Urs Muntwyler

The development of reliable lifetime prediction methods for Battery Management Systems (BMS) requires better State of Health (SOH) estimation methods to understand the degradation mechanism in electric batteries. Data Driven Methods (DDMs) use machine learning models like regression models, Support Vector Machine (SVM) or deep learning models like Recurrent Neural Network (RNN) to estimate the SOH of a battery. Drive cycle data from e-bikes, containing various battery usage features, can be used in DDMs to predict the SOH of batteries and understand the battery behavior to enhance the battery performance.

Supervisor: Prof. Dr Andrea Vezzini

Registration for the on-site event