Title :
Effects of stray magnetic fields on the iron core of DCC
Author :
Shao, Haiming ; Wu, Jing ; Lin, Feipeng ; Liang, Bo ; Jia, Kai
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
Stray flux (leakage or interference flux) in the iron core of DCC due to the primary eccentric bus-bar and the external adjacent current-carrying conductor were calculated by electromagnetic analytical methods. The equivalent relations between the leakage fields and the interference fields were derived. Based on the relations, the effect of leakage fields caused by the eccentric bus-bar on the DCC error can be easily evaluated by the interference fields generated by the neighboring current-carrying conductor, and a new shape of DCC primary coils has been designed.
Keywords :
busbars; coils; conductors (electric); current comparators; electromagnetic interference; iron; magnetic cores; DCC iron core; DCC primary coils; electromagnetic analytical methods; external adjacent current-carrying conductor; interference fields; interference flux; leakage fields; leakage flux; neighboring current-carrying conductor; primary eccentric bus-bar; stray flux; stray magnetic fields effects; Coils; Conductors; Interference; Iron; Magnetic cores; Windings; Direct current comparator; error; interference flux; leakage flux; stray flux;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251018