Results 21 to 30 of about 123,509 (118)

Stability Analysis Method for Three-Phase Multi-Functional Grid-Connected Inverters With Unbalanced Local Loads Considering the Active Imbalance Compensation

IEEE Access, 2018
This paper proposes a small-signal stability analysis method for the three-phase multifunctional grid-connected inverter (MFGCI) system with an unbalanced local load based on impedance modeling.
Wei Jin, Yongli Li, Guangyu Sun, Xiaolong Chen, Yan Gao   +4 more
doaj   +1 more source

High-Frequency Oscillation Suppression Strategy for Interconnected Grid-Forming Energy Storage and Grid-Following HVDC Systems Based on Impedance Analysis

Energies
Interconnecting grid-following (GFL) and grid-forming (GFM) converters help stabilize weak grids with a high penetration of power electronics, but dynamic interactions can induce high-frequency oscillations (HFOs). The HFO mechanism within interconnected
Jun Deng, Xiaoping Wang, Yichun Wang, Weixiang Wang   +3 more
doaj   +1 more source

Design of Interleaved Winding for Multilayer Planar Inductor and Its Application in Reducing Current Ringing of LLC Resonant Converter

Energies
To enhance the power density of LLC resonant converters, multilayer planar inductors are required. However, multilayer planar inductors have high parasitic capacitance, which may cause inductor current ringing in LLC resonant converters, leading to EMI ...
Qichen Liu, Zhengquan Zhang
doaj   +1 more source

Electromechanical Dynamics Model of Ultrasonic Transducer in Ultrasonic Machining Based on Equivalent Circuit Approach

Sensors, 2019
Ultrasonic transducer is a piezoelectric actuator that converts AC electrical energy into ultrasonic mechanical vibration to accelerate the material removal rate of workpiece in rotary ultrasonic machining (RUM).
Jian-Guo Zhang, Zhi-Li Long, Wen-Ju Ma, Guang-Hao Hu, Yang-Min Li   +4 more
doaj   +1 more source

Combining an Electrothermal and Impedance Aging Model to Investigate Thermal Degradation Caused by Fast Charging

Energies, 2018
Fast charging is an exciting topic in the field of electric and hybrid electric vehicles (EVs/HEVs). In order to achieve faster charging times, fast-charging applications involve high-current profiles which can lead to high cell temperature increase, and
Joris de Hoog, Joris Jaguemont, Mohamed Abdel-Monem, Peter Van Den Bossche, Joeri Van Mierlo, Noshin Omar   +5 more
doaj   +1 more source

Impedance tracking control of magnetostrictive transducer based on variable stiffness tuning

Journal of Science: Advanced Materials and Devices, 2023
A magnetostrictive transducer (MT) is a highly integrated transducer that enables magneto-mechanical energy conversion when outputting actuation motion or force.
Liang Shu, Bo Li, Yeheng Zhang, Hongbi Deng, Menglun Tao   +4 more
doaj   +1 more source

Subsynchronous Oscillation Suppression of Direct-Drive Wind Turbines Based on Improved Linear Active Disturbance Rejection Control and Analysis of Impedance Stability

发电技术
ObjectivesIn response to the impact of the bandwidth of the current inner loop PI controller on the stability of the grid connected system of direct drive wind turbines under the background of weak electricity network, which leads to the induction of sub
REN Beilei, GUO Kunli, CAI Weizheng, LI Bohao, ZHU Tinghua, LI Lingtao   +5 more
doaj   +1 more source

Detection of Peat Fire Risk Area Based on Impedance Model and DInSAR Approaches Using ALOS-2 PALSAR-2 Data

IEEE Access, 2019
Forest fire in Indonesia occurs mostly in peatland area. Dry peatland areas with groundwater table (GWT) more than 40 cm from the soil surface have become degradation areas with high potentials to fire.
Joko Widodo, Yuta Izumi, Ayaka Takahashi, Husnul Kausarian, Daniele Perissin, Josaphat Tetuko Sri Sumantyo   +5 more
doaj   +1 more source

Real-Time Impedance Detection for PEM Fuel Cell Based on TAB Converter Voltage Perturbation

Energies
Fuel cells, as clean and efficient energy conversion devices, hold great potential for applications in the fields of hydrogen-based transportation and stand-alone power systems.
Jialong Zhou, Jinhai Jiang, Fulin Fan, Chuanyu Sun, Zhen Dong, Kai Song   +5 more
doaj   +1 more source

Impedance-Based Stability Analysis and Stabilization Control Strategy of MMC-HVDC Considering Complete Control Loops

IEEE Access, 2020
Impedance-based stability criterion is effective for analyzing the oscillation phenomenon in modular multilevel converter-based high-voltage DC (MMC-HVDC) transmission system, and modeling MMC impedance is the critical step.
Taiyuan Yin, Yue Wang, Bo Yue, Pengfan Xu, Pengkun Li, Nian Mei, Dong Xu   +6 more
doaj   +1 more source