Results 61 to 70 of about 8,621,420 (153)

Dependence of the efficiency of electroluminescent indicators on the parameters of the power supply

Технологія та конструювання в електронній апаратурі, 2008
The dependencies of the brightness of thin-film electroluminescent indicators on the composition of the active material, as well as on the voltage and frequency of the power supply, have been investigated.
S. V. Lenkov, Yu. A. Gunchenko, V. V. Zherevchuk, А. V. Selukov   +3 more
doaj  

A new control technique for active power filters using a combined genetic algorithm/conventional analysis [PDF]

, 2002
In this paper, the computational problems associated with the optimization techniques used to evaluate the switching patterns for controlling variable-characteristics active power filters are presented and critically analyzed.
El-Habrouk, M, Darwish, MK
core   +1 more source

Model-Based Algorithm for Flexible Power Point Tracking for Photovoltaic Participation in Primary Frequency Regulation

Energies
Grid-connected photovoltaic (PV) systems are commonly designed for maximum energy production. However, as their presence grows, revised grid regulations increasingly require these systems to partially adhere to the primary frequency regulation (PFR) by ...
Loredana Cristaldi, Marco Faifer, Christian Laurano, Emil Petkovski, Ferdinanda Ponci, Igor Sowa, Sergio Toscani   +6 more
doaj   +1 more source

A Discrete Frequency Tuning Active Filter for Power System Harmonics

, 2012
[[abstract]]Severe voltage distortion due to power system harmonic resonance has been reported in recent years. The termination installation active filter was presented to resolve this problem.
Tzung-Lin Lee;Jian-Cheng Li;Po-Tai Cheng
core   +1 more source

Adaptive Control for Improved Virtual Synchronous Generator Under Imbalanced Grid Voltage

IEEE Open Journal of the Industrial Electronics Society
As renewable energy continues to grow, more inverter-based distributed generators are being integrated into power grids, in which virtual synchronous generator (VSG) is widely adopted to regulate system voltage and stabilize frequency.
Yangyang Chen, Wei Han, Youhao Hu, Yilin Zhang   +3 more
doaj   +1 more source

Frequency coordinated control and parameter optimization for photovoltaic–energy storage systems based on a GA-BP hybrid algorithm

Frontiers in Energy Research
IntroductionFrequency oscillations induced by stochastic disturbances pose significant challenges to grid-connected photovoltaic (PV) systems. This study proposes an adaptive optimization strategy for photovoltaic-energy storage systems (PV-ESS) based on
Runzhi Mu, Hongchun Shu, Hongchun Shu, Hongchun Shu, Hongchun Shu, Yuming Zhang, Xiongbiao Wan, Shunji Luo, Shunji Luo, Shunji Luo, Shunji Luo, Zichao Zhou, Guangxue Wang, Guangxue Wang, Guangxue Wang, Guangxue Wang, Shunguang Lei, Shunguang Lei, Shunguang Lei, Shunguang Lei   +19 more
doaj   +1 more source

Examination of issues affecting the teaching and learning of large cohorts within practical-based subjects [PDF]

, 2010
The aim of this work is to advance the teaching and learning of practical-based subjects in the higher education (HE) sector. Part of the study involved the development of a model that enhanced the teaching and learning of textiles within large groups of
Power, EJ, Power, Jess, Jess Power
core   +1 more source

Multitime Scale Reactive Power and Voltage Optimal Regulation for Transmission Network With Wind Power Cluster Based on Model Predictive Control

International Transactions on Electrical Energy Systems
In order to solve the problem of voltage fluctuation caused by the grid integration of wind power cluster, a multitime scale reactive power and voltage optimal regulation method based on model predictive control (MPC) is proposed in this paper.
Hong Wang, Chao Yuan, Wen Gu, Chun Yang, Minhao Kong, Jian Yu   +5 more
doaj   +1 more source

Reactive Power-Voltage Droop Gain Online Tuning Method of Photovoltaic Inverters for Improvement of Stable Output Power Capability in Weak Grids

Shanghai Jiaotong Daxue xuebao
The active power output capability and small signal stability in weak grids are key factors that limit stable photovoltaic (PV) power generation. To improve stably generating PV power in weak grids, an adaptive control method for PV inverters based on ...
WANG Yuyang, ZHANG Chen, ZHANG Yu, WANG Yiming, XU Po, CAI Xu
doaj   +1 more source

U.S. Trade Policy and the Adjustment Process [PDF]

This paper focuses on the adjustment environment in the United States as set out by the active U.S. trade remedy laws (antidumping, countervailing duties, and safeguards) and the Trade Adjustment Assistance program. We document U.S.
Chad P. Bown, Rachel McCulloch
core