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GaN HEMTs in High-Frequency Overvoltage Switching: Electrical or Thermal Failure?
Applied Power Electronics Conference, 2023GaN high-electron-mobility transistors (HEMTs) have no avalanche capability and are known to fail electrically when the transient overvoltage reaches their dynamic breakdown voltage (BVDYN).
Ruizhe Zhang +3 more
semanticscholar +1 more source
Suppression of Incoming High-Frequency Overvoltage in Transformer Coils
IEEE Transactions on Power Delivery, 2021High-frequency overvoltages are most dangerous for the insulation of transformer coils. It is because high-frequency pulse voltage creates an uneven distribution of voltage across the windings.
S. Korobeynikov +4 more
semanticscholar +1 more source
Overvoltage Robustness of p-Gate GaN HEMTs in High Frequency Switching up to Megahertz
IEEE transactions on power electronics, 2023This article investigates the ruggedness of the GaN high electron mobility transistor (HEMT), a power device without avalanche capability, in continuous, high-frequency, overvoltage switching.
Ruizhe Zhang +3 more
semanticscholar +1 more source
Analysis and Verification of Overvoltage Generation Mechanism for 500 kV DCCB Power Supply Ports
IEEE International Conference on Power System Technology, 2023Power supply system failures of the 500 kV DC Circuit Breaker in operation occurred several times during the closing process, resulting in DC circuit breaker unavailable.
Fuyue Wen +7 more
semanticscholar +1 more source
IEEE Advanced Information Technology, Electronic and Automation Control Conference, 2021
In order to ensure the reliable operation of power system, to adapt to the characteristics of uneven economic development and resource to generate electricity in China, to realize electric power over long distances, cross-regional, across the river.
Sha Wang, Li-qun Shang
semanticscholar +1 more source
In order to ensure the reliable operation of power system, to adapt to the characteristics of uneven economic development and resource to generate electricity in China, to realize electric power over long distances, cross-regional, across the river.
Sha Wang, Li-qun Shang
semanticscholar +1 more source
Applied Power Electronics Conference, 2022
Surge-energy and overvoltage ruggedness of power devices are desired in many power applications. For the GaN high-electron-mobility transistor (HEMT), a device without avalanche capability, its surge-energy and overvoltage ruggedness are both determined ...
Ruizhe Zhang +3 more
semanticscholar +1 more source
Surge-energy and overvoltage ruggedness of power devices are desired in many power applications. For the GaN high-electron-mobility transistor (HEMT), a device without avalanche capability, its surge-energy and overvoltage ruggedness are both determined ...
Ruizhe Zhang +3 more
semanticscholar +1 more source
Impact of 750kV Transmission Line Series Compensation Capacity on Power Frequency Overvoltage
Advanced Materials Research, 2014The overvoltage calculation of 750kV transmission line with series compensation has great significance on the design, insulation coordination and protection of the line. In this paper, a transient model of 750kV power transmission system with series compensation is established.
Ding Jun Wen +4 more
openaire +1 more source
Flexible Broadband Overvoltage Sensor for High-voltage Power Electronic Equipment
2022 7th Asia Conference on Power and Electrical Engineering (ACPEE), 2022With the increasing application of renewable energy equipment and power electronic equipment in power system, voltage distribution in power grid operation is becoming more and more complex, putting forward new requirements for overvoltage monitoring of ...
Zha Kunpeng +5 more
semanticscholar +1 more source
Coordinated Countermeasures Against Overvoltage Instability in Autonomous Power Systems
IEEE Transactions on Power Delivery, 2021Autonomous power systems with a single power station and a high-voltage (HV) network may be susceptible to overvoltage instability, especially during light-load conditions.
C. Vournas, V. Nikolaidis, G. Tsourakis
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2021 XVIII International Scientific Technical Conference Alternating Current Electric Drives (ACED), 2021
Power supply of AC motors from semiconductor frequency converters with voltage inverters contains the risk of overvoltages on the supply line between the converter and the motor. The nature of overvoltages lies in the interference of the pulses generated
Mihail Yu. Borodin +3 more
semanticscholar +1 more source
Power supply of AC motors from semiconductor frequency converters with voltage inverters contains the risk of overvoltages on the supply line between the converter and the motor. The nature of overvoltages lies in the interference of the pulses generated
Mihail Yu. Borodin +3 more
semanticscholar +1 more source