Integrated switch current sensor for shortcircuit protection and current control of 1.7-kV SiC MOSFET modules

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

doi:10.1109/ecce.2016.7855210

Cited by 56 publications

(24 citation statements)

References 10 publications

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“…The same measurement can be performed with a PCB Rogowski coil instead for a higher power density [6,7,[17][18][19][20][21][22][23][24][25]. One possible PCB coil wound with short tracks and vias is shown in Fig.…”

Section: Basic Operating Principles Of Pcb Rcsmentioning

confidence: 99%

“…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%

“…Such accuracy has not been demonstrated in the literature. For comprehensiveness, the prospective passive [22] and active [6][7][8][13][14][15][16] integrators for regenerating the desired current waveform from the four-layer Rogowski coil have also been described. The eventual solution identified is a modified noninverting integrator, whose wide range of integration and lack of DC offset, pre-shoot and distorted droop problems have promptly met demands of the coil.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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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Section: Basic Operating Principles Of Pcb Rcsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

View full text Add to dashboard Cite

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Analysis on characteristic of 3.3‐kV full SiC device and railway traction converter design

Ding

Dou

Qian

et al. 2022

IET Power Electronics

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With the rapid development of wide‐band gap semiconductor chip and package technologies, the voltage class of commercial silicon carbide (SiC) device is gradually improved. This paper concentrates on the latest 3.3‐kV full SiC‐based metal oxide semiconductor field‐effect transistor (MOSFET) device and its application in railway traction. First, compared with the Si‐based insulated‐gate bipolar transistor (IGBT), the SiC‐based MOSFET shows lower switching loss but weaker short‐circuit capacity. Second, in the railway traction application, the SiC‐based MOSFET with high switching frequency could reduce the inverter loss, the harmonic loss and the noise of traction motor. Third, a well‐designed filter is necessary between the inverter and the motor to prevent the motor from terminal overvoltage and insulation problem, which are resulted from long cable and high dv/dt. Finally, a full‐SiC railway traction inverter prototype is built and tested, and shows obvious advantages on miniaturization and lightweight.

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Online Short-Circuit Protection Strategy of an Electric Powerpack for Electric Oil Pump Applications

2021

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With the trend towards the miniaturisation and electrification of automotive components, the electric oil pump (EOP) is generally designed as an integrated powerpack in which a motor and an electronic control unit (ECU) are combined into an integrated system, with the electronic components of the ECU exposed to harsher temperature environments. The critical weakness of the traditional design is short-circuit failures, and the most common protection method is monitoring. However, this method cannot predict the accurate protection current, indicating that the fault detection level and short-circuit current (SCC) may change depending on the operating temperature and load condition to which the devices are subject. In this case, switching devices can be destroyed or deteriorated if they are unexpectedly placed outside of the protection range. This study proposes an online short-circuit protection method in which the optimal fault threshold can be controlled in real time, in accordance with changes in temperature and load conditions. To this end, this study investigates the cause of fluctuations in SCC and analyses the protection range and qualification time for SCC through worst-case analysis. To determine the optimal fault threshold, the SCC waveform is estimated through circuit analysis and a method of estimating ( ), which is the cause of SCC fluctuation, is proposed based on simulation and experimental data. Finally, according to ( ), optimal thresholds are derived and the proposed methods are experimentally-verified. It is found that the SCC could be predicted and managed within the protection range by the proposed new protection method.INDEX TERMS Automotive electric powerpack, diagnosis, electric oil pump, gate drive circuit, junction temperature, optimal fault threshold, short-circuit protection, short-circuit current waveform.

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Integrated switch current sensor for shortcircuit protection and current control of 1.7-kV SiC MOSFET modules

Cited by 56 publications

References 10 publications

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

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

Analysis on characteristic of 3.3‐kV full SiC device and railway traction converter design

Online Short-Circuit Protection Strategy of an Electric Powerpack for Electric Oil Pump Applications

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