Results 91 to 100 of about 1,562 (203)

Resolving Sub-Cycle Overvoltage Issue in Solar and Type-4 Wind Farms Employing Low Voltage Ride Through

IEEE Access
Over the past few years, transmission grid in the USA has seen numerous unintentional tripping events of large-scale inverter based resources (IBRs). These trippings were primarily caused by non-standard settings and certain fault ride through controls ...
Shah Mohazzem Hossain, Trupal Patel, Sukumar Brahma   +2 more
doaj   +1 more source

Frequency Scanning-Based Simplified Overvoltage Prediction Method for SiC Inverter-Fed Motor Drives in Electric Vehicles

World Electric Vehicle Journal
Wide-bandgap power devices, particularly silicon carbide (SiC) MOSFETs, have seen widespread adoption in electric vehicle (EV) motor drive systems due to their superior switching characteristics, including high switching speeds and high switching ...
Yipu Xu, Xia Liu, Chengsong Li, Wenjun Chen, Jiatong Deng   +4 more
doaj   +1 more source

Partial discharge characteristics of insulation used in inverter-fed traction motor under high frequency impulse

, 2012
Stator insulation in inverter-fed traction motors may prematurely lose its function due to continuous square impulses voltage of converters, whose insulation failure mechanism is different from that under power frequency AC voltage. Partial discharge (PD)
Cao, Kaijiang, Wu, Guangning, Luo, Yang, Cui, Yi   +3 more
core   +1 more source

Control Strategy for Asymmetric Faults on the Low-Frequency Side of a Sparse Modular Multilevel Converter

Sparse modular multilevel converters (SMMCs) are a new type of lightweight high-voltage large-power AC/AC converter that significantly reduces the number of components compared to modular multilevel matrix converters (M3Cs).
Yuwei Sun, Shengce Wang, Bao Liu, Zelin Zhang, Yunfei Xu, Guoliang Zhao, Chen Jia, Chao Fu   +7 more
core   +1 more source

Performance evaluation of online transformer internal fault detection based on transient overvoltage signals

, 2017
© 1994-2012 IEEE. Winding deformation is a critical power transformer issue that needs to be detected as soon as it emerges due to its progressive nature and severe consequences it may lead to.
Xiaozhen Zhao, Abu-Siada, Ahmed, A. Abu-Siada, Yao, C., Zhongyong Zhao, Zhao, Z., Chenguo Yao, Zhao, X.   +7 more
core   +1 more source

Study on power frequency overvoltage and wind turbine disconnection probability during non-full-phase operation

Journal of Physics: Conference Series
Abstract Experimental results indicate that during non-full-phase operation following a single-phase transient grounding fault, power frequency overvoltage occurs in the system. In systems with significant wind power integration, such overvoltage may lead to the disconnection of wind turbines, thereby increasing the probability of ...
Donghui Wang, Zengping Wang, Tong Wang
openaire   +1 more source

Optimization of reactive power in high-voltage AC transmission systems for long-distance offshore wind power using high-voltage shunt adjustable reactor

International Journal of Electrical Power & Energy Systems
High-voltage shunt reactor (HVSR) is essential for the high-voltage AC transmission system of long-distance offshore wind power to achieve in-situ reactive power balancing and to limit industrial frequency overvoltage.
Li Peng, Kanghang He, Longfu Luo, Jingyu Yang   +3 more
doaj   +1 more source

Application of Zero Overvoltage Switching in Switched Mode Power Supplies

With the increasing adoption of wide bandgap (WBG) semiconductor devices, new methods are required to manage their faster switching characteristics, particularly addressing voltage overshoots caused by fast switching.
Eckardt, Bernd, März, Martin, Matlok, Stefan, Kerscher, Moritz, Schmied, Nico   +4 more
core   +1 more source

Closed-form approach for predicting overvoltage transients in cable-fed PWM motor drives for MEA

, 2016
The More Electric Aircraft (MEA) concept has set tight constraints for power density and efficiency of electromechanical actuators in aircraft applications.
Barater, Davide, Giorgio Pietrini, Galea, Michael, Michael Galea, Concari, Carlo, Carlo Concari, Chris Gerada, Gerada, Chris, Davide Barater, Pietrini, Giorgio   +9 more
core   +1 more source

Mitigation of machine neutral point overvoltage in SiC motor drives by controlling antiresonance frequency and switching frequency

No descrinverter-fed motors are vulnerable to premature insulation failure due to overvoltage stress across stator windings because of antiresonance phenomenon which is characterized by two oscillatory overvoltage responses that manifest at the motor ...
Xibo Yuan (11766488), Mohamed Diab (11652895), Mustafa Memon (13797673)   +2 more
core