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 |
| Externally published | Yes |
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Keywords
- Cryogenic system
- Induction motor
- LHD
- SMES
- UPS
- Voltage sag
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Nuclear Energy and Engineering
- Civil and Structural Engineering
- Mechanical Engineering
Cite this
SMES-UPS for large-scaled SC magnet system of LHD. / Yamada, Shuichi; Mito, T.; Chikaraishi, H.; Nishimura, A.; Kojima, H.; Nakanishi, Yosuke; Uede, T.; Satow, T.; Motojima, O.
In: Fusion Engineering and Design, Vol. 66-68, 09.2003, p. 1149-1153.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - SMES-UPS for large-scaled SC magnet system of LHD
AU - Yamada, Shuichi
AU - Mito, T.
AU - Chikaraishi, H.
AU - Nishimura, A.
AU - Kojima, H.
AU - Nakanishi, Yosuke
AU - Uede, T.
AU - Satow, T.
AU - Motojima, O.
PY - 2003/9
Y1 - 2003/9
N2 - 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.
AB - 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.
KW - Cryogenic system
KW - Induction motor
KW - LHD
KW - SMES
KW - UPS
KW - Voltage sag
UR - http://www.scopus.com/inward/record.url?scp=0141718475&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0141718475&partnerID=8YFLogxK
U2 - 10.1016/S0920-3796(03)00297-7
DO - 10.1016/S0920-3796(03)00297-7
M3 - Article
AN - SCOPUS:0141718475
VL - 66-68
SP - 1149
EP - 1153
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
ER -