Results 61 to 70 of about 500 (164)

A Simple and Robust Sensorless Control Based on Stator Current Vector for PMSG Wind Power Systems

IEEE Access, 2019
This paper proposes a novel sensorless control based on the stator current vector for permanent-magnet synchronous generators in variable-speed wind energy conversion systems.
Ngoc Dat Dao, Dong-Choon Lee, Sangmin Lee   +2 more
doaj   +1 more source

Mode‐adaptive multifunctional control of the distributed generation‐based AC microgrid for seamless grid synchronisation

IET Energy Systems Integration, 2021
This study presents a mode adaptive multifunctional control strategy that avoids the collapse of the microgrid due to the subsequent failure of the generation units and faulty grid.
Farheen Chishti, Bhim Singh
doaj   +1 more source

Research of Self-Injection-Locked Vital Sign Radar Using Frequency-Locked Loop Based Phase-Tracking Technique

, 2021
Non-contact vital sign radar has attracted attention in recent years. Compared with wearable and contact-based vital-sign sensors, non-contact vital-sign radar is not limited by connection wires and battery life.
Fu, Yu-Ting
core  

Speed-Sensorless Control of Induction Motor Drives With a STA-FLL Speed Estimation Scheme

, 2023
Speed-sensorless control (SSC) techniques enhance the overall reliability while reducing the cost, and thus become attractive in induction motors (IMs).
Zuo, Yun, Ge, Xinglai, Feng, Xiaoyun, Yun Zuo, Chen, Dunzhi; id_orcid, Huimin Wang, Yang, Yongheng, Dunzhi Chen, Xinglai Ge, Wang, Huimin, Yongheng Yang, Xiaoyun Feng, Liu, Yong Chao, Yong-Chao Liu   +13 more
core   +1 more source

Enhancing Power Quality in Three‐Phase Distribution Systems Using PV‐Supported DSTATCOM: A Simulation‐Based Study

Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.
The escalating demand for electricity underscores the critical need for stability in power systems. Distribution networks face formidable power quality challenges due to unregulated utilization of diverse loads, leading to voltage fluctuations, harmonics, and phase unbalance.
Vinamra Kumar Govil, Kuldeep Sahay, Tripathi S. M., Anurag Sinha, Nrapendra Kumar, Ayodele Lasisi, QuadriNoorulhasan Naveed, Saifullah Khalid, Ramash Kumar K.   +8 more
wiley   +1 more source

Impedance Analysis of SOGI-FLL-Based Grid Synchronization

, 2017
The latest research has pointed out that the Phase-Locked Loop (PLL) plays an important role in shaping the impedance of grid-connected converters, yet most of the works so far merely focus on the synchronous reference-frame PLL.
Yi, Hao, Fang Zhuo, Zhuo, Fang, Wang, Xiongfei; id_orcid, Blaabjerg, Frede; id_orcid, Hao Yi, Frede Blaabjerg, Xiongfei Wang   +7 more
core   +1 more source

Optimized operation of AC–DC microgrid cluster with modified PLL and socket protocol

IET Renewable Power Generation, Volume 18, Issue S1, Page 4584-4601, 18 December 2024.
Optimized operation of AC–DC microgrid cluster with modified PLL and SocKet protocol Abstract Microgrids integrating inverter based resources face challenges like stability issues during voltage fluctuations and reliance on diesel generators in islanded mode.
Sonam Gupta, Swastik Gupta, Anup Shukla, Francisco M. Gonzalez‐Longatt   +3 more
wiley   +1 more source

Frequency locked loop architecture for phase noise reduction in wideband low-noise microwave oscillators. [PDF]

, 2013
Política de acceso abierto tomada de: https://digital-library.theiet.org/files/Author_self-archiving_policy.pdfA frequency locked loop (FLL) for phase noise reduction of wideband voltage controlled oscillators is proposed.
Moreno-Pozas, Laureano, Moscoso Mártir, Álvaro, De-Oliva-Rubio, José, Molina-Fernández, Íñigo, Ávila Ruiz, Juan Manuel, Durán Valdeiglesias, Elena   +5 more
core   +1 more source

The fourth order flux observer with in‐loop filter for permanent magnet synchronous motor sensorless control

IET Electric Power Applications, Volume 18, Issue 11, Page 1421-1434, November 2024.
To enhance the performance of the flux observer in mitigating DC bias and high‐order harmonics, this study introduces a fourth‐ordered flux observer (FOIFFO). Theoretical analysis demonstrates that the FOIFFO exhibits robust attenuation capabilities towards DC bias and harmonics, thereby preventing motor parameter mismatch and additional interference ...
Ziwen Wang, Ciyong Luo, Xiaoshu Jia, Zihao Xing   +3 more
wiley   +1 more source

Online Mechanical Resonance Frequency Identification Method Based on an Improved Second-Order Generalized Integrator—Frequency-Locked Loop

To address the issue of mechanical resonance frequency detection in dual-inertia servo systems, this paper proposes an online identification method for mechanical resonance frequency using a low-pass filter and cascaded second-order generalized ...
Yongchao Zhang, Lei Sun, Wenqi Lu, Weimin Shi, Luojun Wang, Kelu Wu   +5 more
core   +1 more source