Search Results - "Graber, Lukas"

Improving the accuracy of SF6 leakage detection for high voltage switchgear by Graber, Lukas

“…Even though average leakage rates of SF 6 in high voltage equipment are very low, there is no guarantee for a 100% leakage-free system, especially when…”
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A Non-Invasive Circuit Breaker Arc Duration Measurement Method with Improved Robustness Based on Vibration–Sound Fusion and Convolutional Neural Network by Guo, Ning, Whitmore, Kevin, Cohen, Morris, Beyah, Raheem, Graber, Lukas

“…Previous studies have shown that the contact wear estimation of circuit breakers can be based on the accumulative arc duration. However, one problem that…”
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Electric Contact Material Selection for Medium and High Voltage DC Circuit Breakers by Damle, Tushar, Varenberg, Michael, Graber, Lukas

“…Medium and high voltage DC grids are increasingly proposed for terrestrial, shipboard and aircraft power systems. However, multi terminal DC networks can only…”
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Design, Implementation, and Evaluation of an Output Prediction Model of the 10 MW Floating Offshore Wind Turbine for a Digital Twin by Kim, Changhyun, Dinh, Minh-Chau, Sung, Hae-Jin, Kim, Kyong-Hwan, Choi, Jeong-Ho, Graber, Lukas, Yu, In-Keun, Park, Minwon

“…Predicting the output power of wind generators is essential to improve grid flexibility, which is vulnerable to power supply variability and uncertainty…”
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Evaluation Tests of Metal Oxide Varistors for DC Circuit Breakers by Xu, Chunmeng, Rockhill, Andrew, Zhang, Zhi Jin, Bosworth, Matthew, Saeedifard, Maryam, Steurer, Michael, Zeller, Peter, Graber, Lukas

“…With emerging technologies and products in power semiconductors and ultrafast mechanical switches, direct-current circuit breakers (DCCBs) have been developing…”
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Review of semiconductor devices and other power electronics components at cryogenic temperature by Liao, Yuchuan, Elwakeel, Abdelrahman, Xiao, Yudi, Alzola, Rafael Peña, Zhang, Min, Yuan, Weijia, Feliciano, Alfonso J. Cruz, Graber, Lukas

“…With the increasing demand for high power density, and to meet extreme working conditions, research has been focused on investigating the performance of power…”
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High-Temperature Superconducting Cable Design Based on Individual Insulated Conductors by Kim, Chul H., Graber, Lukas, Kim, WooJin, Viquez, Jose, Cheetham, Peter, Pamidi, Sastry V.

“…The idea of insulating individual high-temperature superconducting (HTS) tapes was explored as a dielectric design to reduce the risk and complexity of HTS…”
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Thermosyphon bushing: design, simulation and implementation by Xu, Chunmeng, Graber, Lukas

“…•This paper presents a new application of thermosyphons in electrical equipment.•Thermosyphon bushing’s performances have been validated by experiments and…”
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Critical Damping in Travel Curves of Piezoelectrically Actuated Fast Mechanical Switches for Hybrid Circuit Breakers by Xu, Chunmeng, Jin, Zhiyang, Tousi, Maryam, Graber, Lukas

“…Piezoelectrically actuated fast mechanical switches provide a low-loss conduction path in hybrid circuit breakers for protecting medium-voltage direct-current…”
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Piezoelectrically Actuated Fast Mechanical Switch for MVDC Protection by Xu, Chunmeng, Damle, Tushar, Bosworth, Matthew, Soto, Dionne, Agarwal, Rachit, Steurer, Michael, Graber, Lukas

“…Medium voltage direct current (MVDC) power systems are in their early phase of development, but the lack of efficient and reliable DC circuit breakers is…”
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7.2 kV Three-Port SiC Single-Stage Current-Source Solid-State Transformer With 90 kV Lightning Protection by Zheng, Liran, Han, Xiangyu, Xu, Chunmeng, Kandula, Rajendra Prasad, Graber, Lukas, Saeedifard, Maryam, Divan, Deepak

“…This article proposes a multiport modular single-stage current-source solid-state transformer (SST) for applications like photovoltaic, energy storage…”
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Control Development and Fault Current Commutation Test for the EDISON Hybrid Circuit Breaker by He, Yuchen, Yang, Qichen, Li, Yuan, Kim, Sanghun, Peng, Fang Zheng, Bosworth, Matthew, Wang, Lu, Jin, Zhiyang, Shi, Yanjun, Bonaventura, Nash, Steurer, Michael, Xu, Chunmeng, Graber, Lukas

“…The dc circuit breaker is an indispensable building block for dc network systems. Hybrid circuit breakers that combine mechanical and solid-state switches have…”
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Impact Assessment of Inverter-Based Resource Integration on Circuit Breaker Arc Extinction by Chen, Yiming, Grijalva, Santiago, Graber, Lukas

“…The power grid is experiencing significant transformations due to the widespread adoption of inverter-based resources (IBRs). These changes are reshaping grid…”
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Lifetime-Based Selection Procedures for DC Circuit Breaker Varistors by Zhang, Zhi Jin, Bosworth, Matthew, Xu, Chunmeng, Rockhill, Andrew, Zeller, Peter, Saeedifard, Maryam, Graber, Lukas, Steurer, Michael

“…Varistors are widely used in dc circuit breaker (DCCB) application as fault energy absorption elements, which is not an application the varistors are…”
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Improving the accuracy of SF 6 leakage detection for high voltage switchgear by Graber, Lukas

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Switching Motion Control of Piezoelectric Actuators in Hybrid Circuit Breakers for MVDC System Protection by Xu, Chunmeng, Jin, Zhiyang, Graber, Lukas

“…This paper presents a switching motion controller for a piezoelectric actuator used in fast mechanical switches, which are the essential parts in hybrid…”
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Feasibility Study on Copper-Clad Lithium Conductors for Cryogenic Applications by Ghosh, Amrita, Feliciano, Alfonso Cruz, Murphy, Raymond, Xu, Chunmeng, Jin, Zhiyang, Graber, Lukas

“…The trend towards efficient turbo-electric distributed propulsion aircraft calls for more research concerning lightweight power distribution and power…”
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Optimization of a superconducting gas-insulated transmission line by Cheetham, Peter, Kim, Chul H., Pamidi, Sastry, Graber, Lukas

“…The superconducting gas insulated transmission line (S-GIL) is a new design being proposed for helium gas (GHe) cooled high temperature superconducting (HTS)…”
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CLEAN: Cryogenic Link for Electric Aircraft Propulsion by Saha, Pradip Chandra, Shi, Yanjun, Steurer, Michael, Cheetham, Peter, Kim, Chul, Pamidi, Sastry, Goldman, Jonathan, German, Brian, Jin, Zhiyang, Graber, Lukas, Park, Chanyeop

“…We propose a thermally efficient and power-dense high-temperature superconducting (HTS) cable (CLEAN Cable) as well as a thermally efficient, mechanically…”
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Response and Control of Individual Stacks of a Multi-Stack Piezoelectric Actuator for DC Fast Disconnect Switches by Ghosh, Amrita, Jin, Zhiyang, Whitmore, Kevin, Tousi, Maryam, Graber, Lukas

“…Hybrid circuit breakers (HCBs) are a potential protection solution for medium-voltage direct current (MVDC) power systems. These HCBs require fast mechanical…”
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