Results 61 to 70 of about 643 (186)
Fault Ride-Through Control Strategy for Variable Speed Pumped Storage Unit with Full-Size Converter
Applied SciencesFault ride-through is a prerequisite for ensuring continuous operation of a variable-speed pumped storage unit with a full-size converter (FSC-VSPU) and providing support for the renewable energy and power grid.
Huabo Shi +7 more
doaj +1 more source
Improved hybrid modular multilevel converters with dc short-circuit fault ride-through capacity
The Journal of Engineering, 2018 Modular multilevel converter (MMC) has become a promising converter alternative for transmission voltage-source converter high-voltage direct current applications. The main issue and challenge of MMC is how to handle the dc short-circuit fault.
Yuhang Lei +3 more
doaj +1 more source
Desired and Feared Identities and Their Role in Occupational Identity Regulation
Journal of Management Studies, EarlyView.Abstract This paper extends theory by showing how occupational identity regulation operates jointly through both desired and feared identities which, in combination, enforce normative control. Taking a narrative identity perspective and drawing on an ethnographic and interview‐based study of veterinarians, we make three principal contributions to our ...
Sarah Page‐Jones, Andrew D. Brown
wiley +1 more source
ElectricityTo address the critical issue of low reliability caused by fault impacts in large-scale wind farms transmitting power over long distances via flexible DC transmission systems, this study proposes a collaborative solution.
Hao Wang, Wenyue Zhou, Yiping Luo
doaj +1 more source
Pacific Focus, EarlyView.ABSTRACT South Korean President Park Geun‐hye's 2016 decision to authorize the deployment of the U.S. Forces Korea THAAD system—and Beijing's subsequent economic and diplomatic coercion—marked a decisive inflection point in Seoul's China policy.
Joel Atkinson
wiley +1 more source
A study on fault ride-through strategies for mine DC power supply systems based on FBSM-MMC
矿业科学学报Direct current(DC)power supply system is a key technology for enhancing the power supply efficiency and safety of underground mining equipment due to its excellent voltage stability and little reactive power losses. However, its inherent low-impedance is
HAN Shengguang +4 more
doaj +1 more source
Public Administration Review, EarlyView.ABSTRACT The federal government, and its budget process, are facing unprecedented challenges. The federal debt is at historic levels, the process is in disarray, and the constitutional balance of powers is being challenged as never before. The debt, driven by growth in entitlement spending, stands at $38 trillion and is projected to continue to grow if
Carolyn Bourdeaux +4 more
wiley +1 more source
International Journal of Electrical Power & Energy SystemsTo enhance frequency support and fault ride-through capabilities of MMC-HVDC system, an MMC multi-time scale coordinated control strategy considering the regulation dead zone is proposed, which achieves wide-area coordinated complementarity of multiple ...
Shouqi Jiang +5 more
doaj +1 more source
Sociological Forum, EarlyView.ABSTRACT This paper introduces transboundary spanning as a novel concept for social movement analysis. Using Extinction Rebellion (XR) in the United States as a case study, we examine the relational dynamics of social movement boundary spanning: processes wherein actors and organizations engage across symbolic boundaries.
Tobias Müller, Peter Gardner
wiley +1 more source
The Journal of Engineering, 2019 The large PV medium-voltage (MV) DC power collection system is more efficient than the traditional AC collection system, which provides an alternative for future PV applications.
Xi Xinze +6 more
doaj +1 more source