Results 21 to 30 of about 120,732 (263)

Optimal PI controller based PSO optimization for PV inverter using SPWM techniques

Energy Reports, 2022
This paper deals with the inverter controller utilizing Sinusoidal Pulse Width Modulation (SPWM) to control the three-phase off-grid system’s modulation index.
Maher G.M. Abdolrasol, M.A. Hannan, S.M. Suhail Hussain, Taha Selim Ustun   +3 more
doaj   +1 more source

Research on the scheme for electrical vehicle aggregators participating in the frequency modulation auxiliary service market

Zhejiang dianli, 2023
A great number of electric vehicle （EV） charging piles can participate in the electricity spot market and auxiliary service market through load aggregation to comprehensively optimize operating costs.
LUAN Jie, LI Liang, LU Feng, ZHENG Songsong, LIU Haifeng, LI Yuan, HONG Min   +6 more
doaj   +1 more source

Load Mismatch Compensation of Load-Modulated Power Amplifiers: A Comprehensive Review

Energies
With the diversification, acceleration, and arraying of wireless communication systems, power amplifiers (PAs) face stricter demands in terms of RF operation bandwidth, high-efficiency power range, and load mismatch compensation.
Yufeng Zang, Weimin Shi, Jinting Liu, Tian Qi, Mingyu Li   +4 more
doaj   +1 more source

A Comprehensive Analysis of Bandwidth and Size for Four-Types of Series-Combined Transformer-Based Doherty Output Networks: Theory and Examples

IEEE Access
This paper presents theory-driven design guidelines for four types of series-combined transformer (SCT)-based Doherty output matching networks to maximize bandwidth (BW).
Seokchul Lee, John D. Cressler
doaj   +1 more source

Coordinate strategy of dual-pulse-width-modulation converter based on direct power control with load power feed-forward

Measurement + Control, 2020
The common dual-pulse-width-modulation converter adopts the independent method to control the rectifier and inverter, which has the defects including direct current voltage fluctuation, slow system response and so on.
Bo Fan, Zhumu Fu, Kai Michels, Jiangtao Fu   +3 more
doaj   +1 more source

Integrated Control Strategy for Electrolytic Aluminum Load Participation in Frequency Modulation

IEEE Access, 2021
The introduction of electrolytic aluminum load in a large-scale power system with complex power station structure is essential for load frequency control (LFC). In this paper, we propose a control strategy for electrolytic aluminum load to participate in
Xin Shen, Hongchun Shu, Zhengyun Fan, Xi Mo   +3 more
doaj   +1 more source

Prediction method of primary frequency modulation capability of power system based on MEA-BP algorithm

Energy Reports, 2023
In order to accurately predict the primary frequency modulation capability of power system when frequency deviation occurs, a method for predicting primary frequency modulation performance of power system based on improved neural network with thought ...
Yudong Zhang, Fan Tang, Xiaobin Liang, Jian Sun, Hongxun Li, Hang Ru   +5 more
doaj   +1 more source

Advancements in Doherty Power Amplifiers for High Efficiency, Broadband 5G, and Beyond

IEEE Access
Doherty Power Amplifiers (DPAs) are pivotal in meeting the stringent demands of modern wireless communication systems, including 5G New Radio, Wi-Fi 7, and joint communication and sensing (JCAS), where high peak-to-average power ratios (PAPR), wide ...
Meysam Azimi-Roein, Majid Baghaei-Nejad, Hafiz Hejazi   +2 more
doaj   +1 more source

Wind Turbine Load Optimization Control Strategy Based on LIDAR Feed-Forward Control for Primary Frequency Modulation Process with Pitch Angle Reservation

Energies, 2023
Because wind power is connected to the grid on a large scale, frequency fluctuation in the power grid, which is defined as a system safety risk to the power grid, occurs from time to time.
Deyi Fu, Lingxing Kong, Lice Gong, Anqing Wang, Haikun Jia, Na Zhao   +5 more
doaj   +1 more source

Natural Killer Cells in Paediatric Soft Tissue Sarcomas: A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Paediatric soft tissue sarcomas (pSTS) are a rare and heterogeneous group of malignant tumours arising in tissues of mesenchymal origin. The role of natural killer (NK) cells in pSTS remains poorly understood, with evidence fragmented across small preclinical studies and early‐phase clinical trials.
Raya Dean, Lara V. Graham, Christina Putnam, Rosa Gomes Alves Martins, Daniel T. Harding, Tim J. Underwood, Zoë S. Walters, Matthew D. Blunt   +7 more
wiley   +1 more source