Design of a high-bandwidth Rogowski current sensor for gate-drive shortcircuit protection of 1.7 kV SiC MOSFET power modules

Wang, Jun; Shen, Z. John; Burgos, Rolando; Boroyevich, Dushan

doi:10.1109/wipda.2015.7369315

Cited by 66 publications

(24 citation statements)

References 5 publications

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“…The use of a Rogowski coil to detect fault conditions is addressed in [29]. The solution cannot detect the DC current and still remains quite complex for implementation due to parasitic oscillations and requirement of high-bandwidth amplifiers.…”

Section: Failure Detection Methodsmentioning

confidence: 99%

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

et al. 2019

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Reliable and predictable operation of power electronics is of increasing importance due to continuously growing penetration of such systems in industrial applications. This article focuses on the fault-tolerant operation of the bidirectional secondary-modulated current-source DC–DC converter. The study analyzes possible topology reconfigurations in case an open- or short-circuit condition occurs in one of the semiconductor devices. In addition, multi-mode operation based on topology-morphing is evaluated to extend the operating range of the case study topology. The influence of post-failure modes on the functionality and performance is analyzed with a 300 W converter prototype. It is demonstrated that failure of one transistor in the current-source side can be mitigated without dramatic loss in the efficiency at maximum power, while preserving bidirectional operation capability.

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Section: Failure Detection Methodsmentioning

confidence: 99%

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

et al. 2019

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“…Reference [23] has therefore suggested PCB Rogowski coils for protecting the SiC MOSFETs. The same idea has been mentioned in [60]- [62], where PCB Rogowski coil has again been tested to be IEEE POWER ELECTRONICS REGULAR PAPER/LETTER/CORRESPONDENCE ideal for short-circuit protection due to its high bandwidth, short response delay, high accuracy, small size and low cost.…”

Section: Measuring Current Through Sic Mosfetmentioning

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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“…The measurement of switch current has always been essential for determination of characteristics [1][2][3], real-time extraction of junction temperature [4], protection and control [5][6][7][8]. However, with silicon carbide (SiC) devices, their fast switching speeds and sensitivities to parasitic parameters have noticeably complicated their current measurements [5,9], which now require a current sensor with an extremely wide bandwidth and a high-noise immunity.…”

Section: Introductionmentioning

confidence: 99%

“…Exclusion of a magnetic core can therefore be of interest, like in the non-intrusive Rogowski current sensor (RCS), which in the literature, has been suggested for measuring current through a fast SiC device [5][6][7][8]. Structurally, RCS is very simple too, comprising only a Rogowski coil and an integrator.…”

Section: Introductionmentioning

confidence: 99%

“…Presently, the Rogowski coil can be implemented as either a flexible helical coil [13][14][15][16] or a rigid printed-circuit-board (PCB) coil formed by tracks and vias [6,7,[17][18][19][20]. The former is more for implementing a general current probe, while the latter is more for integrating within a highly compact system and hence tougher to develop.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structure and modelling of four‐layer screen‐returned PCB Rogowski coil with very few turns for high‐bandwidth SiC current measurement

Lei¹,

Xin²,

Liu

et al. 2020

IET Power Electronics

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Accurate measurement of current through a silicon carbide (SiC) device is especially challenging, because of its fast switching speed. Its accompanied current sensor must hence have a high-bandwidth and a high-noise immunity. It must also not interfere with operation of the device. Due to these, the printed-circuit-board (PCB) Rogowski current sensor is particularly suitable, but normally requires many layers. With only four layers, the existing Rogowski coils are not yet capable of shielding ambient voltage and magnetic noises simultaneously. Moreover, their computed and measured self-inductances are usually very different with errors as high as 45% reported in the literature. To resolve these issues, an alternative four-layer screen-returned PCB coil has been presented. The described coil uses very few turns to preserve its high bandwidth at the expense of even tougher determination of its self-inductance. An alternative piecewise modelling method has therefore been proposed for finding its self-inductance, needed for designing its theoretical bandwidth. These, together with a non-inverting integrator, permit current through an SiC device to be measured accurately, as demonstrated experimentally.

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Design of a high-bandwidth Rogowski current sensor for gate-drive shortcircuit protection of 1.7 kV SiC MOSFET power modules

Cited by 66 publications

References 5 publications

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

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

Structure and modelling of four‐layer screen‐returned PCB Rogowski coil with very few turns for high‐bandwidth SiC current measurement

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