Characterization and Error Compensation of a Rogowski Coil in the Presence of Harmonics
- 6 December 2010
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 60 (4), 1175-1181
- https://doi.org/10.1109/TIM.2010.2090694
Abstract
This paper reports the results of an experimental study dealing with a commercial Rogowski coil current transducer (RCCT) in the presence of harmonic distortion. The RCCT was observed under two conditions: 1) sinusoidal excitation with frequencies from 50 to 750 Hz and 2) nonsinusoidal excitation using fundamental frequency and one harmonic, with adjustable amplitude and phase shift. The experimental results show only a weak dependence of the harmonic current ratio error and phase displacement on the amplitude and phase shift of the excitation harmonic. The phase displacement is also independent of the conductor position within the Rogowski coil window. An error compensation method, based on the frequency response, was implemented and tested with a distorted waveform. The compensation method allows one to obtain an improvement of the RCCT accuracy class from 1% and 1°, in the case of a sinusoidal signal at mains frequency, to 0.05% and 0.05°, both for the fundamental and the distorted signal harmonics.Keywords
This publication has 14 references indexed in Scilit:
- Real-Time Digital Compensation of Current Transformers Over a Wide Frequency RangeIEEE Transactions on Instrumentation and Measurement, 2010
- Development of an Electrical Power Quality Monitor based on a PCPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2009
- Characterization of Clamp-On Current Transformers Under Nonsinusoidal ConditionsIEEE Transactions on Power Delivery, 2008
- Mutual Inductance of a Precise Rogowski Coil in Dependence of the Position of Primary ConductorIEEE Transactions on Instrumentation and Measurement, 2008
- An Electronic Current Transformer Based on Rogowski CoilPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- A technique for real-time correction of measurement instrument transducers frequency responsesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Current Distortion Reduction in Six-Pulse Parallel-Connected AC/DC RectifiersIEEE Transactions on Power Delivery, 2008
- Reduced PWM harmonic distortion for multilevel inverters operating over a wide modulation rangeIEEE Transactions on Power Electronics, 2006
- Electronic error reduction system for clamp-on probes and measuring current transformersIEEE Transactions on Instrumentation and Measurement, 2000
- A low-current multistage clamp-on current transformer with ratio errors below 50×10/sup -6/IEEE Transactions on Instrumentation and Measurement, 1997