Abstract
The LHD is an SC experimental fusion device of heliotron type. Eight sets of the helium compressors with total electric power of 3.5 MW are installed in the cryogenic system. The analytical studies of the SMES-UPS for the compressors under the deep voltage sag are reported in this paper. The amplitude and frequency of the voltage decrease gradually by the regenerating effect of the induction motors. The SMES-UPS system proposed in this report has the following functions; (1) variable frequency control, (2) regulations by ACR and AVR, and (3) rapid isolation and synchronous reconnection from the loads to grid line. We have demonstrated that SMES was useful for the large-scaled cryogenic system of the experimental fusion device.
| Original language | English |
|---|---|
| Pages (from-to) | 1149-1153 |
| Number of pages | 5 |
| Journal | Fusion Engineering and Design |
| Volume | 66-68 |
| DOIs | |
| Publication status | Published - 2003 Sep 1 |
| Externally published | Yes |
Keywords
- Cryogenic system
- Induction motor
- LHD
- SMES
- UPS
- Voltage sag
ASJC Scopus subject areas
- Civil and Structural Engineering
- Nuclear Energy and Engineering
- Materials Science(all)
- Mechanical Engineering
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Yamada, S., Mito, T., Chikaraishi, H., Nishimura, A., Kojima, H., Nakanishi, Y., Uede, T., Satow, T., & Motojima, O. (2003). SMES-UPS for large-scaled SC magnet system of LHD. Fusion Engineering and Design, 66-68, 1149-1153. https://doi.org/10.1016/S0920-3796(03)00297-7