Results 81 to 90 of about 986 (217)

Sub‐Synchronous Oscillation Suppression Strategy for DFIG Based on Morris‐EFAST Global Sensitivity Analysis and Multi‐Parameter Co‐Optimisation

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
The impedance sensitivity of the doubly‐fed induction generator (DFIG) grid‐connected system with series compensation is analysed using the Morris method and the extended Fourier amplitude sensitivity test (EFAST). A cooperative optimisation approach is proposed to adjust high‐sensitivity parameters, thereby suppressing sub‐synchronous oscillations ...
Gaojun Meng, Junyi Wang, Lei Huang, Yangfei Zhang, Linlin Yu, Haitao Liu   +5 more
wiley   +1 more source

Culture, Efficacy, and Outcome Expectancy in Teacher Preparation;How Do the Beliefs of Pre-Service Interns, Mentor Teachers, University Supervisors and Teacher Educators Compare? [PDF]

, 2011
Researchers agree that teachers\u27 attitudes and efficacy beliefs play a significant role in student achievement (Armor et al., 1976 Hoy & Spero, 2005 Szabo & Mokhtari, 2004 Woolfolk & Hoy, 1990).
Alexander, Sashelle Thomas
core   +3 more sources

Heuristic Switching State Domain Reduction Finite Control Set Model Predictive Control for Multi‐Level Current Source Inverter

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
This paper introduces a heuristic domain reduction strategy for finite control set model predictive control (FCS‐MPC) applied to multilevel current source inverters, addressing computational challenges while enhancing performance. By leveraging the inverter's structural and electrical characteristics, the method reduces the computational complexity ...
Muyu Chen, Amer M. Y. M. Ghias, Chenggang Cui, Zhige Yuan, Xitong Niu, Vun Chan Hua Nicholas   +5 more
wiley   +1 more source

Research on Multi‐VSG Parallel Control Strategy Based on Sliding Mode Active Disturbance Rejection

Complexity, Volume 2025, Issue 1, 2025.
To suppress the frequency oscillation phenomenon that occurs in the parallel control system of multiple virtual synchronous generators (multi‐VSG) during load mutation, this paper proposes a multi‐VSG parallel control strategy based on sliding mode linear active disturbance rejection (SM‐LADRC).
Fanxing Rao, Yupeng Xiang, Shuai Weng, Huimin Xiong, Xiaopin Yang, Jizheng Zhang, Cui Wang, Yunchuan Ding, Carlos Aguilar-Ibanez   +8 more
wiley   +1 more source

Subsynchronous Osculation Suppression Strategy for Wind Farm DC Grid Integration Considering Delay Compensation

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
The interaction between direct‐drive wind farms and flexible DC transmission systems during grid integration is prone to inducing subsynchronous oscillations (SSOs), and control delays can exacerbate such oscillations, potentially leading to severe grid incidents.
Chenzhi Fang, Yongfeng Ren, Yang Zhang, Zhe Meng, Caiqiao Yue, Fengwei Zhao, Benkun Qi   +6 more
wiley   +1 more source

Modeling and Feedback Control of a MEMS Electrostatic Actuator [PDF]

, 2009
This thesis describes the mathematical modeling and closed-loop voltage control of a MEMS electrostatic actuator. The control goal is to extend the travel range of the actuator beyond the open-loop pull-in limit of one third of the initial gap.
Edwards, Jason
core   +2 more sources

Agricultural tractors magneto-rheological seat suspension design based on LADRC control strategy

Mechanics & Industry
This paper proposes a novel semi-active suspension control method for agricultural tractor seats based on Linear Active Disturbance Rejection Control (LADRC).
Chen Bin, Guo Bo, Zhou Luyang, Zheng Zhixiong, Wu Jianjin, Duan Minghao   +5 more
doaj   +1 more source

Implementation of a D‐STATCOM and Active Power Filter Control Strategy–Based on Virtual Flux Direct Power Control Technique for an Electrical Energy Quality Improvement

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
The improved virtual flux–based direct power control (VF‐DPC) strategy for a grid‐connected power converters is proposed in this paper to eliminate current harmonics and mitigate voltage fluctuations during grid voltage faults without using voltage sensors.
Kamel Sayahi, Belgacem Bouallegue, Faouzi Bacha, El Manaa Barhoumi, Santanu Paul   +4 more
wiley   +1 more source

Hybrid LADRC and NADRC Control Design for Enhanced Performance of YASA‐AFFSPM Motors

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
This paper presents a novel control approach for the yokeless axial‐field flux‐switching permanent magnet (YASA‐AFFSPM) motor, which holds significant promise for manufacturing and electric vehicle (EV) applications. Addressing the challenges of achieving high‐performance control, we establish mathematical models based on the rotor rotating coordinate ...
Javad Rahmani-Fard, Mohammed Jamal Mohammed, Ali Mohammed Ridha, Jagabar Sathik   +3 more
wiley   +1 more source

线性自抗扰控制参数整定鲁棒性的根轨迹分析 [PDF]

, 2018
从极点配置和根轨迹的角度研究了二阶线性定常对象的线性自抗扰控制.提出一个新传递函数框图.基于该框图,将线性自抗扰控制的参数整定解释为闭环极点配置问题,控制器带宽、观测器带宽等参数的整定被看作开环极、零点位置的选择.建议用根轨迹法研究线性自抗扰控制的鲁棒性.通过分析根轨迹定性说明了观测器带宽可以等于控制器带宽,以及线性自抗扰控制对被控对象参数变化的鲁棒性.国家自然科学基金项目(61733017);;福建省自然科学基金项目(2016J01317);;国家留学基金项目(201606315084)资助~
张瑞青, 王雷, 金辉宇, 高志强
core