Energy converters and instrument transformers
Due to the increasing use of power electronic equipment in energy supply networks, the levels of current and voltage harmonics in the networks are increasing sharply. This also changes the requirements placed on instrument transformers and power transformers.
Test rig for generator current transformers
On the one hand, conventional current and voltage transformers should also be used to transmit harmonics with a high degree of accuracy in order to be able to measure and evaluate them. On the other hand, both measuring transducers and transformers must be designed in such a way that the increasing harmonic stress does not affect their operation and service life.
Power flows in the laminated core
The IEEH's Energy and Instrument Transformers working group investigates the suitability of conventional and non-conventional current and voltage transformers for the transmission of high-frequency current and voltage signals. For this purpose, high-frequency high currents or voltages are generated by suitable test setups, the respective measuring transducers are controlled with them, and the frequency-dependent transmission behaviour of the transducer is thus determined by metrological means. Furthermore, the parasitic effects of current and voltage transformers are recorded with the help of mathematical-physical model descriptions and their transmission behavior is analyzed and optimized. Future projects will also investigate the behaviour of power transformers under harmonic stress and transient stress.
Projects
- Analytical calculation and metrological evaluation methods of generator current transformers with extended frequency measuring range
- Modelling and optimization of the frequency transfer behaviour of medium-voltage voltage transformers
- Development of the electrotechnical part of a magnetocaloric air conditioning system
contact person
© R. Cabadag
Research Assistant
NameMr M.Sc. Christian Jäschke
WG leader "Transformers and Instrument Transformers"
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Visiting address:
Toepler-Bau, Room 113d Mommsenstraße 10
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© R. Cabadag
Institut director
NameMr Prof. Dr.-Ing. Peter Schegner
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