Results 11 to 20 of about 824,899 (292)

Damping Torque Analysis of Power Systems with DFIG Wind Turbine Generators [PDF]

open access: yes, 2015
Renewable energy resources are increasingly being used to meet electric power demands and are gradually replacing conventional generation. In particular, wind generation using variable speed wind turbines (VSWT) which include doubly-fed induction ...
Du, W., Littler, T., Lv, C.
core   +1 more source

Power‐frequency oscillation suppression algorithm for AC microgrid with multiple virtual synchronous generators based on fuzzy inference system

open access: yesIET Renewable Power Generation, 2022
In the microgrid, virtual synchronous generator technology can significantly enhance the anti‐interference characteristics of the system frequency and bus voltage, as well as solve the problems of insufficient damping and low inertia. However, the system
Liang Zhang   +5 more
doaj   +1 more source

Neutral-Point Voltage Balancing Method for Three-Phase Three-Level Dual-Active-Bridge Converters

open access: yesEnergies, 2022
Three-phase three-level dual-active-bridge (3L-DAB3) converters are a potential topology for high-voltage and high-power applications. Neutral-point voltage balancing is a complex and important issue for three-level (3L) circuits.
Xinmi Wu, Yu Zhang, Jiawen Yang
doaj   +1 more source

Research On Active Power Online Optimal Control for Hydrostatic Transmission Wind Turbine

open access: yesIEEE Access, 2022
Wind has been admitted as one of the most promising renewable energy resources in multinational regionalization policies. However, due to the randomness and volatility of wind energy and the rigid transmission of traditional wind turbines, it is ...
Gao Wei   +4 more
doaj   +1 more source

Проектирование станка с ЧПУ для маркировки деталей лазером [PDF]

open access: yes, 2003
The increasing demands in MEMS fabrication in the past led to new requirements in production technology for these devices. Especially the packaging and assembly of optical devices like high power diode lasers require high accuracy in positioning and high
Bosse, L., Olowinsky, A.M.
core   +1 more source

Adjustment of Active and Reactive Power of Synchronous Generator in Grid-connected Operation [PDF]

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract The regulation of active power and reactive power of generators in grid-connected operation has always been an important research issue of power plants and power grids for efficient use of energy and stable operation of motors. In daily life, residential electricity consumption is always changing, more at night and less during ...
openaire   +1 more source

Design and realization of an adjustable fluid powered piston for an active air spring [PDF]

open access: yes, 2016
In this paper, we present a new compact hydraulic linear actuator. The concept is developed to change the rolling piston diameter of an active air spring during usage. By doing so, the air spring can actively apply pressure and tension forces. The actuator is designed for small movements at high forces.
Hedrich, Philipp   +2 more
openaire   +2 more sources

Data-driven power system small-signal stability assessment and correction control model based on XGBoost

open access: yesEnergy Reports, 2022
The influence of small-signal stability on the safety and stability of the power system is becoming more prominent. A mapping model based on steady-state operation information is established using the sample learning method, which provides a new ...
Yude Yang, Xiu Zhang, Lizhen Yang
doaj   +1 more source

An experimental investigation of the relationships among race, prayer, and pain [PDF]

open access: yes, 2018
Background and aims Compared to White individuals, Black individuals demonstrate a lower pain tolerance. Research suggests that differences in pain coping strategies, such as prayer, may mediate this race difference.
Ashburn-Nardo, Leslie   +4 more
core   +1 more source

Automated methodology for adjustment of component values in passive converter circuit for wind turbine generators [PDF]

open access: yes, 2012
The current paper proposes an automated design approach for a previously developed passive converter circuits for wind turbine generators. This suggested approach allows to calculate the components for all passive converter circuits approved in European ...
Bekov, Emilian   +3 more
core   +1 more source

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