Results 31 to 40 of about 9,547 (132)

Real‐Time Frequency Adaptive Tracking Control of the WPT System Based on Apparent Power Detection

International Journal of Intelligent Systems, Volume 2023, Issue 1, 2023., 2023
In wireless power transfer (WPT) systems, inverters are used to achieve high‐frequency conversion of DC/AC, and their conversion efficiency and working frequency are key factors affecting the system’s power transfer efficiency. In practical applications, many hardware issues, such as power transistor shutdown and loss, are the main reasons that affect ...
Hongwei Feng, Yuanyuan Liu, Conggui Huang, Linbo Xie, Bin Qi, Yu-an Tan   +5 more
wiley   +1 more source

Multi‐functional control strategy for power quality improvement of three‐phase grid using solar PV fed unified power quality conditioner

IET Energy Systems Integration, Volume 4, Issue 4, Page 518-531, December 2022., 2022
Abstract This article presents a generalised integrator with a band‐pass filter frequency locked loop (GI‐BPF‐FLL) control algorithm for the solar photovoltaic (SPV)‐integrated unified power quality conditioner (SPVUPQC) system. This control algorithm extracts fundamental components (FC) of the distorted and deformed input signals, and it has the ...
Chandrakala Devi Sanjenbam, Priyank Shah, Bhim Singh   +2 more
wiley   +1 more source

Performance improvement of a three‐phase PLL under distorted grid conditions based on frequency adaptive hybrid pre‐filtering

IET Power Electronics, Volume 15, Issue 13, Page 1429-1440, 14 October 2022., 2022
Abstract The phase‐locked loop (PLL) is widely used for grid synchronization in converter control. The moving‐average filter (MAF)‐based PLL has recently attracted considerable attention. However, the response time is drastically increased due to the MAF's large window width, determined by the lowest harmonics. Furthermore, the filtering performance of
Zhenshang Wang, Peng Fu, Liansheng Huang, Xiaojiao Chen, Shiying He, Xiuqing Zhang, Jian Yang   +6 more
wiley   +1 more source

A Three-Phase Frequency-Fixed DSOGI-PLL With Low Computational Effort

IEEE Access, 2023
This paper offers a detailed analysis as well as a tuning and discretization approach of the presented frequency-fixed dual second order generalized integrator based phase-locked loop (FFDSOGI-PLL) for three-phase power systems.
Benjamin Hoepfner, Ralf Vick
doaj   +1 more source

Frequency estimation in DSOGI cells by means of the teager energy operator [PDF]

, 2022
Second Order Generalized Integrator (SOGI) cells are used for notch filtering due to their simplicity and their harmonic rejection capability. SOGI and Dual SOGI (DSOGI) filter cells, combined with Frequency Locked Loops (FLL) to adjust the notch ...
Pigazo, Alberto, Lamo Anuarbe, Paula, Francisco J. Azcondo, Branas, Christian, Paula Lamo, Alberto Pigazo, Azcondo Sánchez, Francisco Javier, Brañas Reyes, Christian, Lamo-Anuarbe, Paula, Pigazo López, Alberto, Christian Branas, Azcondo, Francisco J.   +11 more
core   +1 more source

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

Synchronization signal extraction method based on enhanced DSSOGI-FLL in power grid distortion

Systems Science & Control Engineering, 2018
With the development of new energy, three-phase grid connected converter has been widely applied. In order to meet the requirement of synchronous signals extraction under the condition of asymmetry, dc components and harmonic distortion, the positive and
Xuhu Ren, Zhengyang Lyu, Dewen Li, Zhen Zhang, Shengkun Zhang   +4 more
doaj   +1 more source

1phi SOGI phase locked loop with secondary control path in grid-connected power converters [PDF]

, 2020
The performance of digitally controlled gridconnected power converters depends to a large extent on the synchronization strategy. Single-phase phase locked loops (PLL) with a second-order generalized integrator (SOGI) as quadrature signal generation ...
Lamo Anuarbe, Paula, Francisco J. Azcondo, Paula Lamo, Alberto Pigazo, Azcondo Sánchez, Francisco Javier, Pigazo López, Alberto   +5 more
core   +1 more source

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

Single-phase FLLs Based on Linear Kalman Filter, Limit-Cycle Oscillator, and Complex Band-pass Filter:Analysis and Comparison With a Standard FLL in Grid Applications [PDF]

, 2019
Frequency-locked loops (FLLs) create a rather large category of closed-loop synchronization techniques, which have received considerable attention in different engineering applications, particularly for synchronization, signal processing, and control ...
Vasquez, J.; id_orcid, Golestan, S.; id_orcid, Al-Turki, Y. A., Guerrero, J. M.; id_orcid, Abusorrah, A. M.   +4 more
core   +1 more source