### Abstract

This paper describes a new method for optimizing both Rogowski coil's temperature coefficient and its high frequency response. The proposed scheme is based on finding a value for coil termination resistance and for its temperature coefficient, which result in negligible change of coil output voltage versus temperature while still allowing for any damping ratio desired. The method is tested in a proof-of-concept setup with an openable, rigid Rogowski coil. The result shows that a well-damped LC-resonance of the coil is possible without having to make a compromise with temperature coefficient and vice versa. The proof-of-concept measurement is done for a broad temperature range around room temperature and works for any range where the coil's temperature expansion is sufficiently linear. At the same time, the frequency response is preserved, giving an extension of at least an order of magnitude with respect to previous work.

Original language | English |
---|---|

Article number | 8022679 |

Pages (from-to) | 6646-6652 |

Number of pages | 7 |

Journal | IEEE Sensors Journal |

Volume | 17 |

Issue number | 20 |

DOIs | |

Publication status | Published - 15 Oct 2017 |

MoE publication type | A1 Journal article-refereed |

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### Keywords

- current measurement
- inductive transducers
- power systems
- RLC circuits
- smart grids
- temperature dependence

### Cite this

*IEEE Sensors Journal*,

*17*(20), 6646-6652. [8022679]. https://doi.org/10.1109/JSEN.2017.2743259

}

*IEEE Sensors Journal*, vol. 17, no. 20, 8022679, pp. 6646-6652. https://doi.org/10.1109/JSEN.2017.2743259

**Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils.** / Lehtonen, Tapio A.; Hällstrom, Jari.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils

AU - Lehtonen, Tapio A.

AU - Hällstrom, Jari

PY - 2017/10/15

Y1 - 2017/10/15

N2 - This paper describes a new method for optimizing both Rogowski coil's temperature coefficient and its high frequency response. The proposed scheme is based on finding a value for coil termination resistance and for its temperature coefficient, which result in negligible change of coil output voltage versus temperature while still allowing for any damping ratio desired. The method is tested in a proof-of-concept setup with an openable, rigid Rogowski coil. The result shows that a well-damped LC-resonance of the coil is possible without having to make a compromise with temperature coefficient and vice versa. The proof-of-concept measurement is done for a broad temperature range around room temperature and works for any range where the coil's temperature expansion is sufficiently linear. At the same time, the frequency response is preserved, giving an extension of at least an order of magnitude with respect to previous work.

AB - This paper describes a new method for optimizing both Rogowski coil's temperature coefficient and its high frequency response. The proposed scheme is based on finding a value for coil termination resistance and for its temperature coefficient, which result in negligible change of coil output voltage versus temperature while still allowing for any damping ratio desired. The method is tested in a proof-of-concept setup with an openable, rigid Rogowski coil. The result shows that a well-damped LC-resonance of the coil is possible without having to make a compromise with temperature coefficient and vice versa. The proof-of-concept measurement is done for a broad temperature range around room temperature and works for any range where the coil's temperature expansion is sufficiently linear. At the same time, the frequency response is preserved, giving an extension of at least an order of magnitude with respect to previous work.

KW - current measurement

KW - inductive transducers

KW - power systems

KW - RLC circuits

KW - smart grids

KW - temperature dependence

UR - http://www.scopus.com/inward/record.url?scp=85028694587&partnerID=8YFLogxK

U2 - 10.1109/JSEN.2017.2743259

DO - 10.1109/JSEN.2017.2743259

M3 - Article

VL - 17

SP - 6646

EP - 6652

JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

SN - 1530-437X

IS - 20

M1 - 8022679

ER -