Mutual Inductance Measurement of the Superconducting Coil for the Joule Balance

被引：7
|
作者：
Li, Zhengkun [1 ]
Wang, Gang [2 ]
Li, Shisong [3 ]
Lan, Jiang [3 ]
Han, Bing [1 ]
Lu, Yunfeng [1 ]
Zhang, Zhonghua [1 ]
He, Qing [1 ]
机构：
[1] Natl Inst Metrol, Beijing 100013, Peoples R China
[2] China Jiliang Univ, Hangzhou 310018, Zhejiang, Peoples R China
[3] Tsinghua Univ, Beijing 100084, Peoples R China
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2013年 / 62卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Cryocooler; impedance; measurement; Meissner effect; mutual inductance; Planck constant; superconducting coils; WATT BALANCE; PLANCK CONSTANT; KILOGRAM; REDEFINITION;
D O I：
10.1109/TIM.2013.2256712
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：
The joule balance, an approach for precisely measuring the Planck constant at the National Institute of Metrology (NIM), China, is currently limited by the self-heating of the coil when the measuring current flows. To solve this heating problem, a superconducting coil has been built to replace the existing fixed coil wound with enameled copper wire. The movable coil set is formed by two enameled coils connected oppositely for easy alignment in air. However, the large self-inductance of the superconducting coil brings new challenges for the a mutual inductance measurement. Mutual inductance measurement of superconducting coil based on standard square wave compensation method is presented and discussed in this paper.
引用
收藏
页码：1 / 6
页数：6
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