Results 61 to 70 of about 397 (141)

Design of a High-performance High-pass Generalized Integrator Based Single-phase PLL

, 2017
Grid-interactive power converters are normally synchronized with the grid using phase-locked loops (PLLs). The performance of the PLLs is affected by the non-ideal conditions in the sensed grid voltage such as harmonics, frequency deviations and the dc ...
Kulkarni, Abhijit, John, Vinod
core   +1 more source

Analysis of Transient Characteristics of Asymmetric Fault Current in Offshore Wind Power System Based on Positive and Negative Sequence Decoupling Control

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This study presents a time‐domain method for calculating transient negative sequence currents in offshore wind power AC systems during asymmetric faults. A second‐order differential equation short‐circuit model is developed, incorporating positive and negative sequence decomposition and grid‐side converter control, to accurately predict fault current ...
Botong Li, Guanghui Zheng, Qing Zhong, Shuai Wang, Bin Li   +4 more
wiley   +1 more source

Zero-Sequence Current Suppression for Open-Winding Permanent Magnet Brushless Motor Driving System Based on Second Order Generalized Integrator

IEEE Access, 2020
The open-winding driving system can improve power density and torque output capacity of the motor. However, the open-winding topology with a common direct current (DC) power supply provides a path for the zero-sequence current, which contributes to the ...
Qing Lu, Yuefei Zuo, Tao Zhang, Lihong Mo   +3 more
doaj   +1 more source

Adaptive Current Deviation Control and Improved VDCOL for Enhanced Fault Ride‐Through in CLCC‐HVDC Systems

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper presents an integrated control strategy for enhancing fault ride‐through in CLCC‐HVDC systems. By combining adaptive current deviation control with an improved voltage‐dependent current order limitation strategy, the method leverages CLCC's controllable commutation capabilities to sustain operation and expedite recovery during fault events ...
Menghao Wen, Baohong Li, Qin Jiang, Tianqi Liu, Yingmin Zhang, Minrui Leng   +5 more
wiley   +1 more source

A Novel Flux Estimator Based on Multiple Second-Order Generalized Integrators and Frequency-Locked Loop for Induction Motor Drives

, 2017
Accurate flux estimation is essential for the implementation of a high-performance ac motor drive. However, it still faces some problems, which can better be projected by analyzing performances of existing flux estimators, implemented with either a pure ...
Zhao, Rende, Loh, Poh Chiang, Xin, Zhen, Blaabjerg, Frede; id_orcid   +3 more
core   +1 more source

Robust Detection Algorithm for Single-Phase Voltage Sags Integrating Adaptive Composite Morphological Filtering and Improved MSTOGI-PLL

Energies
Voltage sags pose severe risks to sensitive equipment in modern industries, requiring power quality monitoring equipment to possess fast and accurate sag detection capabilities.
Jun Zhou, Enming Wang, Jianjun Xu, Yang Yu   +3 more
doaj   +1 more source

Wide‐Band Harmonic Resonance Damping Strategy for Grid‐Connected Digitally Controlled LCL‐Type Inverter

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
Considering the low power loss and simple structure, an equivalent impedance model of digitally controlled LCL‐type inverter with a widely deployed capacitor‐current active damping feedback structure is built first. Then, according to the obtained model, the effects of digital time delay of control system and equivalent grid impedance on active damping
Jinhong Liu, Xiaobing Zhang, Baohua Wang
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

Situating genetic counseling research: The role of the sociopolitical climate in research production and interpretation

Journal of Genetic Counseling, Volume 34, Issue 6, December 2025.
Kimberly Zayhowski, Daniela Diaz Caro, Rozalia Valentine, Jehannine (J9) Austin   +3 more
wiley   +1 more source

An Improved Position Self‐Calibration Method Based on Multi‐Harmonics Estimation for Resolver‐to‐Digital Conversion

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
The coupling of multiple non‐ideal factors in rotary transformers causes position errors to include fundamental, secondary harmonic and higher‐order harmonic components. Existing self‐calibration methods mainly focus on the secondary harmonic, neglecting the fundamental and higher‐order harmonics. An improved self‐calibration method is proposed in this
Jialin Li, Zhen Chen, Hengzai Hu, Chaoyong Guo, Qiang Zhang, Youguang Guo   +5 more
wiley   +1 more source