FEASIBILITY OF TURBOGENERATOR WITH SUPERCONDUCTING ROTOR AND CONVENTIONAL STATOR

被引:9
作者
LORCH, HO [1 ]
机构
[1] GEC POWER ENGN LTD,STAFFORD,ENGLAND
来源
PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON | 1973年 / 120卷 / 02期
关键词
SUPERCONDUCTING DEVICES;
D O I
10.1049/piee.1973.0046
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In a 660 Mw turbogenerator, the losses associated with the rotor total some 4. 5 Mw, mainly due to direct current in the field winding. The feasibility of saving this by making the winding superconducting is examined. The stator coils carry alternating current, nd so they cannot be made superconducting, and, in the concept proposed here, the stator is substantially conventional. The new rotor has no iron, except for shaft ends, and the winding is embedded in an insulating cylinder cooled with liquid helium from a refrigeration plant. The winding is protected from harmful ac fields by a copper cylinder which rotates with it. The gap is evacuated, and this screening cylinder is kept cold by thermal conduction in the rresidual gas to a stationary low-temperature shield. The machine has high steady-state- and transient-stability margins, and the need for rapid field changes is greatly diminished. The new rotor allows the present stator to be uprated. Economic aspects are discussed.
引用
收藏
页码:221 / 227
页数:7
相关论文
共 15 条
[1]  
APPLETON AD, 1972, MAY APPL SUP C ANN
[2]  
BARRET P, 1970, CIGRE1111 PAP
[3]  
BENNETT RB, 1968, ENGL ELECTR J, V23, P18
[4]  
DUDLEY JC, 1969, THESIS MASSACHUSETTS
[5]  
GOODFELLOW S, 1967, THESIS MASSACHUSETTS
[6]  
GREENE DL, 1968, THESIS MASSACHUSETTS
[7]   PRELIMINARY STUDIES OF SUPERCONDUCTING ALTERNATORS [J].
HARROWELL, RV .
CRYOGENICS, 1972, 12 (02) :109-+
[8]  
SABRIE JL, 1970, 3 P INT CRYOG ENG C, V3, P433
[9]  
SMITH PF, 1968, RPPA43 RUTH LAB PREP
[10]   SUPERCONDUCTING PROPERTIES OF MULTIFILAMENTARY V3GA WIRES [J].
SUENAGA, M ;
SAMPSON, WB .
APPLIED PHYSICS LETTERS, 1971, 18 (12) :584-&