A fully integrated DC to 75 MHz current sensing circuit with on-chip Rogowski coil

Funk, Tobias; Wicht, Bernhard

doi:10.1109/cicc.2018.8357028

Cited by 30 publications

(14 citation statements)

References 6 publications

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“…The IA can be implemented by using different architectures, like the three operational amplifiers (thee-opamp) topology [61] (Fig. 8a), the capacitively-coupled instrumentation amplifier (CCIA) [69], [71] (Fig. 8b), or the differential-difference amplifier (DDA) [53], [72] (Fig.…”

Section: B Analog Front-endmentioning

confidence: 99%

Hall-Effect Current Sensors: Principles of Operation and Implementation Techniques

2022

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Section: B Analog Front-endmentioning

confidence: 99%

Hall-Effect Current Sensors: Principles of Operation and Implementation Techniques

2022

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“…Depending on the way of construction of zero flux DC transformers, bandwidths of up to 10 kHz for 25 kA maximum currents and up to 500 kHz for 5 kA maximum currents can be obtained [117], [133]. An alternative configuration based on the combination of Hall effect-based sensor with a Rogowski coil that achieves a bandwidth of 75 MHz has been reported in [138].…”

Section: ) Hall-effect Sensormentioning

confidence: 99%

Voltage and Current Measuring Technologies for High Voltage Direct Current Supergrids: A Technology Review Identifying the Options for Protection, Fault Location and Automation Applications

et al. 2020

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After the occurrence of a DC-side feeder faults on HVDC transmission systems, protection and fault detection systems are anticipated to minimize their onerous effects, by initiating fault-clearing actions such as selective tripping of circuit breakers. Following the successful fault clearance, a subsequent action of significant importance, is the meticulous estimation of its location as a means to accelerate the line restoration, reduce down-time, limit recovery and repair costs, and hence elevate the overall availability and reliability of the transmission system. In order to capture DC-side fault transients for protection and fault location applications, measuring equipment is required to be placed on HVDC installations. This paper focuses primarily on reviewing the available technologies from the perspective of enabling protection, fault location and automation applications in HVDC systems. The review constitutes a mapping of protection and fault location functions, against the available voltage and current measuring technologies, ultimately unlocking insights for selecting measuring equipment based on the desirable characteristics of protection and fault location systems. The review also revealed that the frequency characteristics of each sensing scheme, primarily refers to the bandwidth of the primary sensor, whereas the overall bandwidth of the complete measuring scheme may be further restricted by the secondary converter and corresponding data acquisition system and signal processing electronics. It was also identified that the use of RC voltage dividers has prevailed for voltage measurements for HVDC applications, due to their superior advantages. The choice of a suitable device for current measurement, depends mainly on the fault detection method used and the frequency range it operates. In particular, the review revealed that fault detection and protection methods are mainly concentrated in a frequency spectrum ranging from a few kHz to 100 kHz, while fault location methods require measurements with a frequency range from 100 kHz up to 2 MHz.

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“…Working principles of such differential coil can better be illustrated with Fig. 11 [29] [33], where uext(t) represents a source of external du/dt interferences, CP represents parasitic capacitance, and the others are coil parameters defined earlier in Fig. 2.…”

Section: B Implicit Shielding With Differential Coilmentioning

confidence: 99%

A Review of Traditional Helical to Recent Miniaturized Printed Circuit Board Rogowski Coils for Power-Electronic Applications

Shi

Xin

Loh

et al. 2020

IEEE Trans. Power Electron.

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Latest wide-bandgap power devices are switching progressively faster compared with existing silicon devices. Their accurate current measurements for either control or protection have therefore become tougher. One method, that can fulfill the requirements, is to use a Rogowski coil and its accompanied electronics to form a Rogowski current sensor with high bandwidth, small volume, low cost and ease of integration. This paper therefore aims to review various aspects of the Rogowski current sensor from its history, measuring principles to modern power-electronic applications. The applications have, in turn, motivated a progression from traditional helical to recent miniaturized printed-circuit-board (PCB) implementation, in order to improve the overall power density. This progression has similarly been reviewed, together with its various design aspects applied to the winding, integrator, shielding, and parameters of the Rogowski current sensor. Future challenges and directions are then summarized, whose ultimate goal is to maximize accuracy over a wide bandwidth without being affected by radiated and near-field-coupling interferences.

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A fully integrated DC to 75 MHz current sensing circuit with on-chip Rogowski coil

Cited by 30 publications

References 6 publications

Hall-Effect Current Sensors: Principles of Operation and Implementation Techniques

Hall-Effect Current Sensors: Principles of Operation and Implementation Techniques

Voltage and Current Measuring Technologies for High Voltage Direct Current Supergrids: A Technology Review Identifying the Options for Protection, Fault Location and Automation Applications

A Review of Traditional Helical to Recent Miniaturized Printed Circuit Board Rogowski Coils for Power-Electronic Applications

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