Modeling and measurement of the voltage signal in HTS flux pumps
| Main Authors: | Ghabeli, Asef, Pardo, Enric, Soloviov, Mykola, Šouc, Ján |
|---|---|
| Format: | Proceeding poster Journal |
| Bahasa: | eng |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3547548 |
Daftar Isi:
- High-temperature superconductor (HTS) flux pumps can be proper alternatives to energize HTS magnets or rotor windings in electrical motors and generators. They perform in a contact-less way avoiding brushes, as well as inefficient current leads and their cryogenic problems. In this work, the performance of dynamo-type HTS flux pump is investigated in detail via numerical modeling based on MEMEP [1], paying special attention to the voltage signal. We assume an E-J power law relation and magnetic field-dependent critical current density Jc(B). We study the cases of open circuit, close circuit and connection to a coil with large inductance. We also build a demonstrator to experimentally benchmark the modeling showing good agreement. We found that Jc does not play a major role in the open-circuit voltage but Jc(B) is key for the pump performance. In conclusion, MEMEP is suitable to model flux pumps, enabling optimization and proof-of-concept tests.