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Analysis of DC reversal error of the calorimetric thermal voltage converter
Measurement ( IF 5.6 ) Pub Date : 2020-09-12 , DOI: 10.1016/j.measurement.2020.108439
Krzysztof Kubiczek , Marian Kampik , Michał Grzenik

One of the most precise standards of AC voltage in the frequency range from 1 MHz to 100 MHz is the Calorimetric Thermal Voltage Converter (CTVC) designed at National Research Council (NRC) in Ottawa, Canada. Unfortunately, this converter has a few times higher value of DC reversal error than other known thermal voltage converters (TVC). This article presents analysis of possible reasons of such a high DC reversal error and discusses possible ways of its reduction. The analysis is performed using finite element method (FEM) simulations. The correctness of the developed FEM model was validated with published results of investigation of the physical model of the CTVC designed and constructed in NRC. This article presents also improved construction of a CTVC and laboratory measurements of its DC reversal error which is about 89% lower than in the case of NRC CTVC.



中文翻译:

量热电压转换器的直流反转误差分析

在1 MHz至100 MHz频率范围内,最精确的交流电压标准之一是由加拿大渥太华国家研究委员会(NRC)设计的量热电压转换器(CTVC)。不幸的是,该转换器的直流反转误差值是其他已知热电压转换器(TVC)的几倍。本文介绍了如此高的直流反向误差的可能原因分析,并讨论了减小其的可能方法。使用有限元方法(FEM)模拟进行分析。已开发的有限元模型的正确性已通过在NRC中设计和构建的CTVC物理模型研究的公开结果进行了验证。

更新日期:2020-09-12
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