Results 121 to 130 of about 1,303 (282)
Synchronous Recovery of Waveforms From Dynamic Phasors Models of LCC-HVDC Links
IEEE AccessLCC-HVDC links are used worldwide for long-distance bulk power transmission in large scale power systems. In this technology, commutation failure phenomena may occur, where transient power interruptions of HVDC links may lead the system to ...
Leonardo Pinto de Almeida +2 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT This paper presents a simplified equivalent circuit model (ECM) for the post‐arc sheath stage in DC vacuum circuit breakers and outlines the method for calculating circuit parameters using the particle‐in‐cell Monte Carlo collision (PIC‐MCC) method. The post‐arc sheath is modelled as a parallel combination of a variable resistor and a variable
Xubin Li +5 more
wiley +1 more source
Practical Implementation of the Indirect Control to the Direct 3 × 5 Matrix Converter Using DSP and Low-Cost FPGA. [PDF]
Sensors (Basel), 2023 Praženica M, Resutík P, Kaščák S.
europepmc +1 more source
High Voltage, EarlyView.ABSTRACT As one of the important links in energy transition and global energy interconnection, electric vehicles (EVs) are becoming increasingly major research topics in the field of energy. Partial discharge (PD) identification under repetitive impulsive voltages plays a pivotal role in evaluating the health of electric vehicle (EV) motor insulation ...
Li Wang +7 more
wiley +1 more source
High Voltage, EarlyView.ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang +4 more
wiley +1 more source
The impact of inverter side PV plant on HVDC commutation failures
, 2020 M.Phil. (Electrical Engineering in Power and Energy Systems)Abstract: The high-voltage direct current (HVDC) system is a crucial technology in transmission; however, this system suffers from commutation failure.
Simelane, Nondumiso Patricia
core
Housing, Inequality and London
The Political Quarterly, EarlyView.Abstract Regional inequalities are deeply entrenched in the UK. London, and its wider region, is often seen as the beneficiary of these inequalities. The capital houses a disproportionate share of the nation's population and its economic output. But London is also home to higher levels of inequality, poverty and child poverty than anywhere else in the ...
Jack Brown, Joe Fyans
wiley +1 more source
Design and Additive Manufacturing of a Continuous Servo Pneumatic Actuator. [PDF]
Micromachines (Basel), 2023 Dämmer G +5 more
europepmc +1 more source
Methods to Prevent Commutation Failures in HVDC Systems
B&H Electrical EngineeringAbstract Commutation failure (CF) is the main fault type in HVDC (High voltage direct current) system with line commuted converter. So, Commutation faults are the main disadvantages of line commutated converter HVDC systems. There are some situations that cause the fault in these types of faults that occur in thyristor valve ...
openaire +1 more source
Labour's Planning Reform: A View from London
The Political Quarterly, EarlyView.Abstract This article examines the English planning reform agenda of the Labour government elected in 2024. It frames London's outer boroughs as a critical lens through which to assess it. Drawing on the findings of the cross‐party Suburban Taskforce (2020–2022), the article has particular regard to the proposed reconfiguration of planning committees ...
Dimitrios Panayotopoulos‐Tsiros +2 more
wiley +1 more source