ECT Evaluation by an Error Measurement System According to IEC 60044-8 and 61850-9-2

Yamada, T.; Kon, Seitaro; Hashimoto, N.; Yamaguchi, Tatsushi; Yazawa, Kenji; Kondo, Reishi; Kurosawa, Kiyoshi

doi:10.1109/tpwrd.2012.2189590

Cited by 36 publications

(13 citation statements)

References 13 publications

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“…FREQUENCY CHARACTERIZATION OF THE PROPOSED SYSTEM Wideband calibration of the ac shunt standards and IVD is required up to 100 kHz for application to frequency characterization of a TCA using (2).…”

Section: Proposed Systemmentioning

confidence: 99%

“…In particular, high-accuracy wideband TCAs are critical in several research areas where accurate current measurements are necessary over a wide frequency range. For example, evaluation of any new current sensor [1], [2] requires an accurate and stable current source, and high-frequency current measurement is necessary in the development of motors for applications such as electric vehicles. In addition, such TCAs would be useful in the assessment of harmonic current emissions to verify compliance with standards for electromagnetic compatibility (EMC) and electromagnetic interference (EMI) such as IEC 61000-3-2.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of High-Accuracy, Wideband Transconductance Amplifiers up to 100 kHz

Kon

Yamada

2014

IEEE Trans. Instrum. Meas.

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A highly precise and accurate system comprising several ac shunts and an inductive voltage divider (IVD) is proposed for characterizing high-accuracy, wideband transconductance amplifiers (TCAs). Frequency characterization of the shunts and the IVD confirms the wideband (up to 100 kHz) performance of the proposed system. Evaluation of two TCAs up to 100 kHz with the proposed system reveals frequency-, current-, and load-dependent properties as well as phase shifts between the input voltage and the output current. The results for the load dependence show that the load differences have a limited impact on the phase shifts up to 10 kHz.

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Section: Proposed Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of High-Accuracy, Wideband Transconductance Amplifiers up to 100 kHz

Kon

Yamada

2014

IEEE Trans. Instrum. Meas.

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“…But effectively modifying the precision of the system itself is difficult, especially the analog part of the system brings drift problems which is sensitive to an electronic transformer. Such as a drift of high-speed high-bandwidth amplifier used in the output platform for analog signal in [10], a drift of the preamplifier to drive the AD in the error measurement system [11] and a drift caused by the analog acquisition channel in a calibration method of capacitive electronic voltage transformer [12]. Through the above analysis, these drift problems mainly belong to the offset and temperature drift of some amplifiers used in these test and calibration systems.…”

Section: Introductionmentioning

confidence: 99%

A calibration method of the zero-drift for testing system of electronic transformer characteristics

Zhou

Huang

et al. 2015

2015 International Conference on Smart Grid and Clean Energy Technologies (ICSGCE)

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Drift problem exists widely in electronic transformer test systems, and is found to have significant effect on describing the steady state characteristics and dynamic characteristics for electronic transformer. The output offset and drift problem of the high-performance and high-precision amplifier is the major cause leading to a drift in characteristic testing system. In this paper, a mixed automatic drift compensation method for dc amplifiers has been presented. By using hardware circuit to measure the drift, with software algorism compensation for several times, the drift of the electronic transformer test system has been solved. The proposed method has been verified by developing an electronic transformer test system.

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“…Therefore, for example, the evaluation of a new current sensor requires an accurate and stable current standard such as a magnetic bridge current sensor [1] and an electronic current transformer. [2] In addition, a precision ac shunt resistor is an important component of sinusoidal and non-sinusoidal power standards and accurate current measurements. For these situations, an ac shunt calibration system has been developed and measurement results for both the ac resistance and phase angle were verified up to 1 kHz.…”

Section: Introductionmentioning

confidence: 99%

Effect of Current Heating on Accurate Measurements of AC Shunt Resistors at DC to 3 kHz

Kon

Yamada

2015

Transactions of The Japan Institute of Electronics Packaging

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To propose a structure of high-accuracy shunt resistors, the frequency and current dependencies of ac shunt resistors with different rated current are evaluated both of ac resistance and phase angle. To evaluate these characteristics, modified current-bridge method was developed. The ac resistances of the shunts do not vary considerably with the frequency, up to 3 kHz. The phase angle of ac shunts varies proportionally to the frequency. The current dependence of the ac resistance of shunts seems to change with current value. The current dependence of the phase angle of the shunt remain stable up to 10 A. Keywords

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ECT Evaluation by an Error Measurement System According to IEC 60044-8 and 61850-9-2

Cited by 36 publications

References 13 publications

Characterization of High-Accuracy, Wideband Transconductance Amplifiers up to 100 kHz

Characterization of High-Accuracy, Wideband Transconductance Amplifiers up to 100 kHz

A calibration method of the zero-drift for testing system of electronic transformer characteristics

Effect of Current Heating on Accurate Measurements of AC Shunt Resistors at DC to 3 kHz

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