## Simulation of an HTS Synchronous Superconducting Generator

Publication: Research › Sound/Visual production (digital) – Annual report year: 2011

### Standard

**Simulation of an HTS Synchronous Superconducting Generator.** / Rodriguez Zermeno, Victor Manuel (Author); Abrahamsen, Asger Bech (Author); Mijatovic, Nenad (Author); Sørensen, Mads Peter (Author); Jensen, Bogi Bech (Author); Pedersen, Niels Falsig (Author).

Publication: Research › Sound/Visual production (digital) – Annual report year: 2011

### Harvard

*Simulation of an HTS Synchronous Superconducting Generator*, Rodriguez Zermeno, VM, Abrahamsen, AB, Mijatovic, N, Sørensen, MP, Jensen, BB & Pedersen, NF

*Simulation of an HTS Synchronous Superconducting Generator*. Sound/Visual production (digital).

### APA

*Simulation of an HTS Synchronous Superconducting Generator*[Sound/Visual production (digital)]. European Conference on Applied Superconductivity, Hauge, Netherlands, 18/09/2011

### CBE

### MLA

*Simulation of an HTS Synchronous Superconducting Generator*Sound/Visual production (digital). 2011. European Conference on Applied Superconductivity, Hauge, 18 Sep 2011

### Vancouver

*Simulation of an HTS Synchronous Superconducting Generator*. [Sound/Visual production (digital)]. 2011. European Conference on Applied Superconductivity, Hauge, Netherlands, 18/09/2011

### Author

### Bibtex

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### RIS

TY - ADVS

T1 - Simulation of an HTS Synchronous Superconducting Generator

A2 - Rodriguez Zermeno,Victor Manuel

A2 - Abrahamsen,Asger Bech

A2 - Mijatovic,Nenad

A2 - Sørensen,Mads Peter

A2 - Jensen,Bogi Bech

A2 - Pedersen,Niels Falsig

PY - 2011

Y1 - 2011

N2 - In this work we present a simulation of a synchronous generator with superconducting rotor windings. As many other electrical rotating machines, superconducting generators are exposed to ripple fields that could be produced from a wide variety of sources: short circuit, load change, etc. Unlike regular conductors, superconductors, experience high losses when exposed to AC fields. Thus, calculation of such losses is relevant for machine design to avoid quenches and increase performance. Superconducting coated conductors are well known to exhibit nonlinear resistivity, thus making the computation of heating losses a cumbersome task. Furthermore, the high aspect ratio of the superconducting materials involved adds a penalty in the time required to perform simulations. The chosen strategy for simulation is as follows: A mechanical torque signal together with an electric load is used to drive the finite element model of a synchronous generator where the current distribution in the rotor windings is assumed uniform. Then, a second finite element model for the superconducting material is linked to calculate the actual current distribution in the windings of the rotor. Finally, heating losses are computed as a response to both the driving mechanical input and the electric load change. The model is used to evaluate the effect of including a damper cage as a protection in the event of a short circuit in the stator coils.

AB - In this work we present a simulation of a synchronous generator with superconducting rotor windings. As many other electrical rotating machines, superconducting generators are exposed to ripple fields that could be produced from a wide variety of sources: short circuit, load change, etc. Unlike regular conductors, superconductors, experience high losses when exposed to AC fields. Thus, calculation of such losses is relevant for machine design to avoid quenches and increase performance. Superconducting coated conductors are well known to exhibit nonlinear resistivity, thus making the computation of heating losses a cumbersome task. Furthermore, the high aspect ratio of the superconducting materials involved adds a penalty in the time required to perform simulations. The chosen strategy for simulation is as follows: A mechanical torque signal together with an electric load is used to drive the finite element model of a synchronous generator where the current distribution in the rotor windings is assumed uniform. Then, a second finite element model for the superconducting material is linked to calculate the actual current distribution in the windings of the rotor. Finally, heating losses are computed as a response to both the driving mechanical input and the electric load change. The model is used to evaluate the effect of including a damper cage as a protection in the event of a short circuit in the stator coils.

ER -