A 15 kV SiC MOSFET gate drive with power over fiber based isolated power supply and comprehensive protection functions

Zhang, Xuan; Li, He; Brothers, John A.; Wang, Jin; Fu, Lixing; Perales, Mico; Wu, John

doi:10.1109/apec.2016.7468138

Cited by 39 publications

(10 citation statements)

References 26 publications

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“…V Cs,n is used as input to generate the adjusted PWM references V ref,n using eq. (6). The PWM signals distributed to each submodule are generated by using the adjusted…”

Section: Simulation Study a Four Series-connected Submodulesmentioning

confidence: 99%

“…Different studies have been reported on SiC MOSFETs with a high blocking voltage over 10 kV [6]- [8]. However, due to limitations of the manufacturing technology and cost, the maximum voltage rating of commercially available discrete SiC MOSFET is 1.7 kV [9], which is inadequate to meet the high voltage demand in power converter applications.…”

Section: Introductionmentioning

confidence: 99%

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Active Voltage Balancing of Series Connected SiC MOSFET Submodules Using Pulsewidth Modulation

Lee

Yao

2021

IEEE Open J. Power Electron.

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Series connection of multiple transistors is an attractive solution to achieve higher voltage capability. However, the voltage imbalance among the series-connected devices is a critical issue caused by mismatches of device characteristics and gate signals. To prevent the failure of devices from the voltage imbalance, voltage balancing control (VBC) is required. In this work, an active VBC for series-connected silicon carbide (SiC) MOSFET submodules is proposed with a pulse width modulation (PWM) method. A submodule consists of two switches and one shunt capacitor, and the PWM method actively controls the capacitor voltages for balancing. The proposed VBC is simulated in MATLAB/Simulink and experimentally verified with six series-connected SiC MOSFET submodules at up to 150 kHz. The voltage balancing is achieved within 3.9 % of the targeted balanced voltage.

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“…V Cs,n is used as input to generate the adjusted PWM references V ref,n using eq. (6). The PWM signals distributed to each submodule are generated by using the adjusted…”

Section: Simulation Study a Four Series-connected Submodulesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Voltage Balancing of Series Connected SiC MOSFET Submodules Using Pulsewidth Modulation

Lee

Yao

2021

IEEE Open J. Power Electron.

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“…The controller and power circuit shall not share a common ground reference. Thisis achieved by using one of the following methods [10, 21]: (i) Transformer isolation. (ii) Optical isolation. (iii) Optical fibre isolation. A typical transformer and optical isolation‐based gate driving is shownin Fig. 4.…”

Section: Generic Gdc Designmentioning

confidence: 99%

“…On the other side, thedevelopment of in‐house laboratory GDCs is time‐consuming and painstaking owing tothe limited resources and its quite challenging, especially for HSF applications[9]. Unlike a uni‐polar driving‐based GDC[10], the application of a bi‐polarvoltage across the gate‐source terminal is highly beneficial. This is because,bi‐polar switching yields in reduced turn‐off time and hence, lower switching losses[11].…”

Section: Introductionmentioning

confidence: 99%

Analysis, design, and implementation of an improved gate driver forhigh switching frequency EV application

Tomar

Sandeep

Verma

et al. 2020

IET Power Electronics

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Electric vehicle (EV) battery chargers operate from moderate switching frequency (MSF) to high switching frequency (HSF) to achieve high power density. To operate the HSF power electronic devices, the selection of gate drivers and its associated components is crucial. Laboratory developed gate driver circuits (GDCs) often fail to drive these HSF devices adequately due to noise vulnerability, PWM duty loss and common-mode currents. Further, at MSF and HSF ranges, the gateto-source terminals of the device are subjected to high voltages due to unwanted noise resulting in false turn-on of the switch leading to the converter failure. In this paper, firstly, an improved GDC and it's associated component selection criteria are proposed for HSF EV application. The proposed GDC is simple in structure with minor components; thus, it is cost-effective and highly reliable. Secondly, the proposed GDC is compared with the other commercially available competent GDCs. Power losses, cost and dynamic switching performance are the figures-of-merit for the quantitative assessment. From the comparison, it will be shown that the proposed GDC exhibits an overall superior performance among the popular GDCs. Finally, the distinctive features of the proposed GDC are experimentally validated for several test cases and the obtained results are presented.

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“…The optical power supply is also mentioned in [11], which proposes a 200 kV HCB. This power supply method also called as power over fibre, delivers the power by laser light via optical fibre over a long distance to achieve high isolation voltage [19], which is technically feasible for HV but its low conversion efficiency leads to low practicability in large‐scale power supply applications.…”

Section: Introductionmentioning

confidence: 99%

HV isolated power supply system for complex multiple electrical potential equipment in 500 kV hybrid DC breaker

Zhang

Zeng

et al. 2020

High Voltage

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High‐voltage direct current circuit breakers (HVDC CB) are one of the key technologies of multi‐terminal DC systems and DC grids. Different from other equipment that use a large number of power electronic devices, the HVDC CB cannot obtain its power from the primary system at high potential, making the power supply of the complex multiple electrical potential equipment in HVDC CB a challenge. In this study, the authors propose an HV isolated power supply system based on the multi‐output high‐frequency isolated power supply unit and the cascaded isolation transformer network. This power supply system can support the 500 kV CB to turn‐off 25 kA current with 800 kV overvoltage.

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A 15 kV SiC MOSFET gate drive with power over fiber based isolated power supply and comprehensive protection functions

Cited by 39 publications

References 26 publications

Active Voltage Balancing of Series Connected SiC MOSFET Submodules Using Pulsewidth Modulation

Active Voltage Balancing of Series Connected SiC MOSFET Submodules Using Pulsewidth Modulation

Analysis, design, and implementation of an improved gate driver forhigh switching frequency EV application

HV isolated power supply system for complex multiple electrical potential equipment in 500 kV hybrid DC breaker

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