Investigation of Trade-Off between Sensor Bandwidth and Damping Achievable Through a Rogowski Coil Based Current Sensor

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

High bandwidth current sensors are required to capture high frequency switching currents in power devices. In addition to their high bandwidth, rogowski coil based current sensors can be integrated with the power converter PCB. The coil is fabricated near the device terminals and may therefore cause an increase in the commutation cell inductance. This increased commutation cell inductance may exacerbate switching ringing as well as the EMI generated by the device. This paper presents a method to damp out switching ringing through resonant coupling of commutation circuit with the rogowski coil. The effect of this coupling on the signal processing circuitry of rogwoski coil is presented subsequently. It is shown with simulation results that the bandwidth of current sensor is limited when the rogowski coil is tuned for resonant damping. Therefore a trade-off between the requisite damping and sensor bandwidth can be established by weighing in the converter design requirements viz. the EMI generated and current sensor performance.

Original languageEnglish
Title of host publication2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020
PublisherIEEE
Publication dateJan 2020
Article number9070574
ISBN (Electronic)9781728142517
DOIs
Publication statusPublished - Jan 2020
Event2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020 - Cochin, India
Duration: 2. Jan 20204. Jan 2020

Conference

Conference2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020
CountryIndia
CityCochin
Period02/01/202004/01/2020
SponsorIA/IE/PEL Jt. Chapter Kerala, IEEE Industry Applications Society, IEEE Kerala Section, IEEE Power Electronics Society
Series2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020

Keywords

  • Damping
  • EMI
  • High Bandwidth
  • Resonance
  • Ringing
  • Rogowski Coil
  • SiC

Fingerprint Dive into the research topics of 'Investigation of Trade-Off between Sensor Bandwidth and Damping Achievable Through a Rogowski Coil Based Current Sensor'. Together they form a unique fingerprint.

  • Cite this

    Rafiq, A., & Maheshwari, R. (2020). Investigation of Trade-Off between Sensor Bandwidth and Damping Achievable Through a Rogowski Coil Based Current Sensor. In 2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020 [9070574] IEEE. 2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020 https://doi.org/10.1109/PESGRE45664.2020.9070574