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Journal articles on the topic 'Swing rotor'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Cao, Yang, Tiezhu Zhang, Hongxin Zhang, Zhen Zhang, Jian Yang, and Baoquan Liu. "Study of the Self-Locking Characteristics of the Swing Scraper of an Elliptical Rotor Scraper Pump." Machines 10, no. 5 (2022): 370. http://dx.doi.org/10.3390/machines10050370.

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This paper proposes an Elliptical Rotor Scraper Pump (ERSP) to address traditional displacement pump defects, such as complex structures, poor self-sealing, low volume utilization, and considerable noise, etc. The ERSP utilizes a swing scraper instead of one rotor in a conventional multirotor pump or reciprocating moving vanes in a traditional vane pump and can achieve high-pressure output through pressure self-sealing. The swing scraper can divide the working chamber into high- and low-pressure rooms. Due to the small swing amplitude of the scraper, the ERSP has low operating noise. The ERSP

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2

Flores, Jonathan, Sergio Salazar, Ivan Gonzalez-Hernandez, et al. "Control of Helicopter Using Virtual Swashplate." Drones 8, no. 7 (2024): 327. http://dx.doi.org/10.3390/drones8070327.

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This article presents a virtual swashplate mechanism for a mini helicopter in classic configuration. The propeller bases are part of a passive mechanism driven by main rotor torque modulaton, this mechanism generates a synchronous and opposite change in the propellers angle of attack, then the thrust vector tilts. This approach proposes to control the 6 degrees of freedom of the aircraft using two rotors. The main rotor controls vertical displacement and uses torque modulation and swing-hinged propellers to generate pitch and roll moments and the horizontal displacement while the yaw moment is

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3

Yang, Kang, and Yi Yang. "Application of FEM Analysis to Fault Diagnosis of Cracked Rotor." Applied Mechanics and Materials 37-38 (November 2010): 181–84. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.181.

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Based on the simple crack model and the finite element method (FEM) theorem, the corresponding dynamic equation of the cracked rotor based on FEM analysis is modeled and the numerical simulation solutions are obtained. By analyzing the dynamic characteristics of cracked rotor in diverse conditions, the properties of the un-cracked rotor and cracked rotor are discussed. A valid fault diagnosis method of cracked rotor is purposed. The method demonstrates that the cracked rotor can be identified by estimating if the swing of disk center obviously accretion and appear wave crest when rotate speed

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4

Murad, Nor Syaza Farhana Mohamad, Muhammad Nizam Kamarudin, and Muhammad Iqbal Zakaria. "Rotor angle deviation regulator to enhance the rotor angle stability of synchronous generators." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 5 (2024): 4879. http://dx.doi.org/10.11591/ijece.v14i5.pp4879-4887.

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Occurrences of disturbance affect the rotor angle operation of a synchronous generator in the generation system of a power system. The disturbance will disrupt the synchronous generator's rotor oscillation and result in rotor angle instability, which will degrade the power system's performance. This paper aims to develop a Lyapunov-based rotor angle deviation regulator for the nonlinear swing equation of a synchronous generator. The proposed regulator is expected to assure asymptotic stability of the rotor angle and robustness to uncertainty. Backstepping and Lyapunov redesign techniques are e

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5

Wang, Chong, Shigong Zhang, Tiezhu Zhang, Hongxin Zhang, and Minghao Li. "Study of a Companion Trajectory Kinematics Analysis Method for the Five-Blade Rotor Swing Scraper Pump." Machines 12, no. 12 (2024): 877. https://doi.org/10.3390/machines12120877.

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This paper proposes a five-blade rotor swing scraper pump (FRSSP) to overcome traditional volumetric pumps’ drawbacks, such as poor sealing performance, low volumetric efficiency, and complex structure. This pump employs a rotating cam-swing scraper mechanism to achieve fluid intake and discharge. The FRSSP is compact in structure, self-sealing, and highly efficient in volumetric utilization, offering promising applications. A companion trajectory kinematic analysis method of the FRSSP is proposed. The polar coordinate equation of the companion trajectory is derived from the profile equation o

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6

Yang, Kang, and Yi Yang. "Simulation of Crack Dynamic Characteristics of Rotor Based on FEM Analysis." Advanced Materials Research 139-141 (October 2010): 2677–80. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2677.

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A new simulation method is proposed for dynamic characteristics of cracked rotor based on the finite element analysis, in which the stiffness model has been derived for the exact description of variation rules of cracked shafts. A non-linear dynamic equation is constituted according to stiffness characteristic of cracked-rotor change in time domain. Then the corresponding dynamic equation of the cracked rotor based on FEM analysis is modeled and the numerical simulation is carried out with solutions of high accuracy. At last, the dynamic characteristics of cracked rotor in diverse conditions a

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7

Ding, Kongxing, Faxin Zhu, Qijiang Yang, et al. "Study on dynamic characteristics of bearing-rotor system under ship sway condition." Journal of Physics: Conference Series 2029, no. 1 (2021): 012032. http://dx.doi.org/10.1088/1742-6596/2029/1/012032.

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Abstract On condition that pans and tilts, ship bearing rotor system stability and security, as the change of ship swaying amplitude have influence, based on independent research and development of guangzhou maritime college design of vertical and horizontal swing test bench, simulate the real working condition of ships at sea, in the performance of bearing rotor system under rolling condition were studied. LMS_TEST. LAB modal tester software was used to analyze the dynamic characteristics and collect the experimental data of the bearing rotor system for analysis and research. In this paper, t

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8

XU, JianHua, Chen XIA, GuoPing HUANG, ZhiGuang ZHANG, and Tong ZHOU. "Analysis on the performance of micro swing rotor engine." SCIENTIA SINICA Technologica 47, no. 6 (2017): 596–604. http://dx.doi.org/10.1360/n092016-00426.

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9

Dekterev, A., A. Dekterev, A. Sentyabov, and S. Filimonov. "IMPLEMENTATION OF A NUMERICAL MODEL FOR THE CYCLOIDAL ROTOR AERODYNAMICS." Eurasian Journal of Mathematical and Computer Applications 13, no. 2 (2025): 43–49. https://doi.org/10.32523/2306-6172-2025-13-2-43-49.

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The paper presents a numerical model and calculations of the aerodynamics of a cycloidal rotor. The cycloidal rotor is a rotor consisting of blades located parallel to the rotor axis, and in addition to rotation, they perform a swing around their own axis, which allows the blade to maintain positive angles of attack and generate lift force in both its upper and lower positions. The numerical model of the flow around the rotor was based on computational fluid dynamics methods and described by the viscous, turbulent incompressible flow of air through the rotor. Discretization of the transfer equ

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10

Han, Tian, Jie Bai, and Zhong Jun Yin. "Dynamic Simulation Analysis of a Cracked Flexible Rotor Supported on Rotor-Rolling Bearing Based on Virtual Prototyping Technology." Advanced Materials Research 156-157 (October 2010): 293–97. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.293.

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The complex nonlinear dynamics of a rotor-rolling bearing system with crack is built by dynamic simulation software ADAMS. The transverse vibration response and swing response of rotor are studied on the basis of considering both the nonlinear contact force of rolling bearing and the impact of stiffness caused by crack. Furthermore, the influence factors of transverse vibration response are researched including speed, crack depth, crack angle and eccentricity. The simulation analysis demonstrated that it is an effective method to solve nonlinear dynamics of rotor-rolling bearing system with cr

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11

Chen, Hu, Cun Yun Pan, and Teng An Zou. "Analysis on Kinematic of Rod on Rotor with Sine Curve Revolving Speed in Twin-Rotor Cylinder-Embedded Piston Engine." Advanced Materials Research 853 (December 2013): 553–58. http://dx.doi.org/10.4028/www.scientific.net/amr.853.553.

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Twin-rotor cylinder-embedded piston engine are a high power density and no valve mechanism engine. Given the motion law of two rotors sine curve change, its kinematic model of rod can be established, and key parameters of rod related to engine performance, such as angular displacement, velocity and acceleration of rod are presented. And then the kinematic model of rod is imported into MATLAB, the moving law of angular displacement, velocity and acceleration of rod are analyzed by changing the value of swing amplitude k. It can be concluded that the changes of rods motion are periodic, relative

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12

A, Jeevitha, and Devi S. "An Enhanced Symmetrical Fault Detection during Power Swing/Angular Instability using Park’s Transformation." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 1 (2016): 23. http://dx.doi.org/10.11591/ijeecs.v2.i1.pp23-31.

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<p>Power systems are subjected to a wide range of small or large disturbances during operating conditions. Power system disturbances such as line switching, generator disconnection and sudden removal of faults causes oscillations in an electrical machine rotor angles that can result in severe power swings. Depending on the protection controls, the system may remain stable or unstable and it may result in loss of synchronism. In recent years, distance relay finds difficulty between symmetrical fault and power swing which causes undesired tripping of the transmission line is the foremost r

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13

Makarov, Pavlo. "The Design Features, Technologies, Modern Quality Evaluating Methods of the Rotor Elements of Energy Equipment." NTU "KhPI" Bulletin: Power and heat engineering processes and equipment, no. 4 (April 30, 2025): 20–28. https://doi.org/10.20998/2078-774x.2023.04.03.

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The presented manuscript is devoted to the consideration of the design features of the elements of power equipment, in particular the rotor and its elements: the spider and its varieties, the rim and poles of the rotor. The analysis of the requirements for the parameters of the rotor depending on the swing moment was carried out. The situation of failure of the turbine regulator directly during load shedding is considered. The parameters of the operational characteristics of the hydraulic unit, which affect the reliability of its operation, were also considered. The manuscript outlines the req

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14

Raffo, Guilherme V., and Marcelino M. de Almeida. "A Load Transportation Nonlinear Control Strategy Using a Tilt-Rotor UAV." Journal of Advanced Transportation 2018 (June 27, 2018): 1–20. http://dx.doi.org/10.1155/2018/1467040.

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This paper proposes a nonlinear control strategy to solve the trajectory tracking problem of a tilt-rotor Unmanned Aerial Vehicle (UAV) when transporting a suspended load. For the present study, the aim of the control system is to track a desired trajectory of the aircraft with load’s swing-free, even in the presence of external disturbances, parametric uncertainties, unmodeled dynamics, and noisy position measurements with lower sampling frequency than the controller. The whole system modeling is obtained through the Euler-Lagrange formulation considering the dynamics of the tilt-rotor UAV co

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15

Yamauchi, Hisashi, Akio Kodama, Tsutomu Hirose, Hiroshi Okano, and Ken-ichiro Yamada. "Performance of VOC Abatement by Thermal Swing Honeycomb Rotor Adsorbers." Industrial & Engineering Chemistry Research 46, no. 12 (2007): 4316–22. http://dx.doi.org/10.1021/ie061184e.

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16

He, Liangguo, Zhikai Wan, Kun Li, et al. "A resonant inertial impact rotary piezoelectric motor based on a self-clamping structure." Review of Scientific Instruments 94, no. 4 (2023): 045003. http://dx.doi.org/10.1063/5.0133681.

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A resonant inertial impact rotary piezoelectric motor based on a self-clamping structure is designed, assembled, and tested. The designed piezoelectric motor mainly includes a rotor (two vibrators, preload mechanism, and intermediate connection mechanism), a clamping mechanism, and another auxiliary mechanism. The piezoelectric ceramic sheet on the rotor drives the vibrator to swing under the excitation of a single harmonic wave. Because there is a clamping mechanism formed by the combination of clamp baffle and fixed clamp ring, thus the half-cycle resonant rotation of the rotor can be effect

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17

Pu, Songcheng, Yumin He, Qijiang Yang, et al. "Study on dynamic characteristics of rotor-bearing system under pitching condition." Journal of Physics: Conference Series 2113, no. 1 (2021): 012021. http://dx.doi.org/10.1088/1742-6596/2113/1/012021.

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Abstract In many cases, ships will encounter special conditions, such as bad sea conditions, and the effect of various disturbance factors, such as wind and waves, will cause low-frequency longitudinal and transverse rocking motion of ships. This would affect the rotor-bearing system of the power plant, which is directly attached to the hull of the ship, and would roll along with the hull in the same longitudinal and transverse motion. This will have a significant impact on the stability of the rotor bearing system of the ship power plant and the safety of the ship. In this paper, a rotor-bear

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18

Sofroniou, Anastasia, and Bhairavi Premnath. "A Comprehensive Analysis into the Effects of Quasiperiodicity on the Swing Equation." WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS 18 (December 31, 2023): 299–309. http://dx.doi.org/10.37394/232011.2023.18.28.

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This research studies the case of quasiperiodicity occurring within the swing equation, a fundamental model that characterises the behaviour of rotor of the machine in synchronous generators in electrical systems. Quasiperiodicity is explained by intricate patterns and understanding the stability of power systems. Bifurcation analysis, frequency domain techniques and numerical simulations are employed to study the swing equation in detail. The objective of this study is to provide a comprehensive understanding of the dynamical behaviour of the equation for the case of quasiperiodicity, using b

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19

Zhang, Zhen, Tiezhu Zhang, Hongxin Zhang, et al. "Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump." Machines 10, no. 2 (2022): 78. http://dx.doi.org/10.3390/machines10020078.

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Against the backdrop of the rapid burgeoning of international energy engineering, the efficient utilization of energy is a paramount factor. The key idea in this paper is to propose an elliptical rotor scraper pump (ERSP) in order to address the imperfections and defects of traditional volume pumps, such as their labyrinthine design, low volume utilization efficiency and undesirable sealing performance. The ERSP can dramatically achieve the aims of ameliorating pump structure and improving energy efficiency. One of the Roots pump's rotors or the vane pump's shifting blade is replaced by a swin

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20

QIN, WEIYANG, and GUANG MENG. "NONLINEAR DYNAMIC RESPONSE AND CHAOS OF A CRACKED ROTOR WITH TWO DISKS." International Journal of Bifurcation and Chaos 13, no. 11 (2003): 3425–36. http://dx.doi.org/10.1142/s021812740300865x.

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In this paper, the nonlinear response and chaos of a cracked rotor with two disks are studied. Considering the breadth of crack in one rotor revolution, the motion equations of the system are derived and then solved. The results show that the rotor response is sensitive to the crack depth, rotating speed, damping ratio and imbalance. When a crack occurs, the frequency of swing vibration is a multiple of rotating speed (NΩ,N=2,3,…). There are three main routes for response to chaos, that is from quasi-periodic to chaos, from quasi-periodic to quasi-periodic bifurcation and then to chaos and the

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21

Xia, Chen, Zhiguang Zhang, Guoping Huang, Tong Zhou, and Jianhua Xu. "A Micro Swing Rotor Engine and the Preliminary Study of Its Thermodynamic Characteristics." Energies 11, no. 10 (2018): 2684. http://dx.doi.org/10.3390/en11102684.

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The rapid progress in microelectromechanical system technology has facilitated great developments in micro heat engines, however, defects in these engines still need to be overcome. Thus, a novel four-stroke micro swing rotor engine (MSRE) that features the advantages of Wankel engine and the micro swing engine is proposed in this study. Kinematic and thermodynamic analyses of the MSRE were performed, and a preliminary experimental research was conducted. In the MSRE, the driver assembly was used to dominate the movements of the two rotors. By the design guideline adaptable to the engine opera

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22

Zhang, Songchao, Chen Cai, Jiqiang Li, et al. "The Airflow Field Characteristics of the Unmanned Agricultural Aerial System on Oilseed Rape (Brassica napus) Canopy for Supplementary Pollination." Agronomy 11, no. 10 (2021): 2035. http://dx.doi.org/10.3390/agronomy11102035.

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Pollination success is essential for hybrid oilseed rape (OSR, Brassica napus) seed production, but traditional pollination methods are not efficient. The unmanned agricultural aerial system (UAAS) has developed rapidly and has been widely used in China. When flying, the wind field generated by the rotors overcomes the UAAS gravity, and it blows and disturbs the crops below, which helps the pollen spread. In order to investigate the distribution law of the three-dimensional (direction x, y, z) airflow field, experiments involving three levels of flight speed (FS) at 4.0, 5.0, and 6.0 m/s, and

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23

Chen, Runlin, Xingzhao Wang, Chen Du, Jun Zha, Kai Liu, and Xiaoyang Yuan. "Stiffness Model and Experimental Study of Hydrostatic Spindle System considering Rotor Swing." Shock and Vibration 2020 (May 15, 2020): 1–8. http://dx.doi.org/10.1155/2020/5901432.

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For high-end CNC machine tools, the stiffness of the spindle system is one of the most important performance indicators. In this paper, the hydrostatic motorized spindle system of a grinding machine is taken as the research object, and a two-degree-of-freedom stiffness model of the spindle system considering rotor swing is proposed. The stiffness of the spindle system under different excitation frequencies is analyzed, and the contributions of the stiffness of two bearings to the stiffness of the spindle system are evaluated. The vibration test on the spindle system is implemented through the

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24

QIN, W. Y., G. MENG, and T. ZHANG. "THE SWING VIBRATION, TRANSVERSE OSCILLATION OF CRACKED ROTOR AND THE INTERMITTENCE CHAOS." Journal of Sound and Vibration 259, no. 3 (2003): 571–83. http://dx.doi.org/10.1006/jsvi.2002.5095.

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25

Al-Shamaain, Zaid S., Hussein D. Al-Majali, and Bilal H. Al-Majali. "Out-of-Step Detection based on Phasor Measurement Unit." WSEAS TRANSACTIONS ON POWER SYSTEMS 18 (December 31, 2023): 354–63. http://dx.doi.org/10.37394/232016.2023.18.36.

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The electrical power systems operate as a huge, interconnected network that extends across a large area. In the power system, there is an equilibrium between generated power and a load. Any disturbance in the system, such as a fault or a change in load, will lead to imbalance and electromechanical oscillations. As a result, the power flow between two areas varies. This is known as a power swing." Large system disturbances could lead to large rotor angle deviations between groups of generators, resulting in a loss of synchronism between generators or between interconnected systems. This is know

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26

Wang, Xiaodong, and Caiqin Song. "Analysis on Nonlinear Dynamic Characteristic of Synchronous Generator Rotor System." Complexity 2019 (January 1, 2019): 1–14. http://dx.doi.org/10.1155/2019/3603172.

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This paper focuses on the swing oscillation process of the synchronous generator rotors in a three-machine power system. With the help of bifurcation diagram, time history, phase portrait, Poincaré section, and frequency spectrum, the complex dynamical behaviors and their evolution process are detected clearly in this power system with varying perturbation related parameters and different system parameters. Furthermore, combining the qualitative and quantitative characteristics of the chaotic motion, different paths leading to chaos coexisting in this system have been found. The Wolf method ha

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27

Kodama, Akio, Motonobu Goto, Tsutomu Hirose, and Toshimi Kuma. "Performance evaluation for a thermal swing honeycomb rotor adsorber using a humidity chart." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 28, no. 1 (1995): 19–24. http://dx.doi.org/10.1252/jcej.28.19.

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28

Feng, Ming, and Weiyang Lu. "Contact Analysis of Rotor-Bearing System for HDD Spindle Motor Under Swing Disturbance." Advanced Science Letters 4, no. 4 (2011): 1331–36. http://dx.doi.org/10.1166/asl.2011.1424.

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29

Chen, Zeng Ji, Wei Min Fang, and Cong Rong Guan. "Anti-Jamming Modification of Exciting System in 600MW Generating Unit." Applied Mechanics and Materials 303-306 (February 2013): 1291–96. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1291.

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In order to reduce excitation system swing and resultant reactive power swing, namely, reduce external electromagnetic interference to stable operation of 600MW generating unit, the paper analyses unit excitation control mode and designs hardware and software of excitation system. First, digital microcomputer control system organization was designed based on nonlinear control theory, which had an increase of control mode such as PID control mode, nonlinear optimum electronic control (NOEC) mode besides original voltage difference and current control mode. Second, full duplex collocation config

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30

Li, Jing, Hao Wu, Xianwen Zhan, and Deqiang Gan. "Estimation of the Region of Attraction of Polynomial Swing Equation Using Sum of Squares Theory." Energies 17, no. 5 (2024): 1050. http://dx.doi.org/10.3390/en17051050.

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Estimation of the region of attraction of the power system using sum of squares (SOS) programming theory is investigated in this paper. Firstly, the Taylor expansion formula is applied to explore the inherent polynomial structure of the swing equation. The single machine projection equation for a multi-machine system is proposed based on the amplitude characteristic of the rotor angle response in decoupled space. Secondly, the theory of SOS programming originating from the polynomial system is derived, and the theory about estimation of the region of attraction for the differential algebraic s

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31

Wang, Luofeng, and Renliang Chen. "Handling Qualities Assessment and Discussion for Helicopter with Slung Load Systems Utilizing Various Sling Configurations." Aerospace 11, no. 9 (2024): 711. http://dx.doi.org/10.3390/aerospace11090711.

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Sling configurations significantly influence the coupled dynamics of the helicopter with slung load system (HSLS), resulting in alterations to handling qualities (HQs) that remain inadequately understood. This study introduces a computer-oriented, generalized method for constructing the HSLS model with various sling configurations. To evaluate the HQs of 1-point, 2-point, and 4-point sling configurations, both the stability and response criteria outlined in ADS-33E and a newly proposed criterion for slung loads towards the updated ADS-33F were employed. Modal analysis was conducted to elucidat

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32

Joshi, Ayush, and Pushkar P. Lele. "Scrutinizing Stator Rotation in the Bacterial Flagellum: Reconciling Experiments and Switching Models." Biomolecules 15, no. 3 (2025): 355. https://doi.org/10.3390/biom15030355.

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The bacterial flagellar motor is one of the few known rotary motors, powering motility and chemotaxis. The mechanisms underlying its rotation and the switching of its rotational direction are fundamental problems in biology that are of significant interest. Recent high-resolution studies of the flagellar motor have transformed our understanding of the motor, revealing a novel gear mechanism where a membranous pentamer of MotA proteins rotates around a cell wall-anchored dimer of MotB proteins to turn the contacting flagellar rotor. A derivative model suggests that significant changes in rotor

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33

Huang, Guangyao, Xiaojing Wang, Xin Qin, Liming Zhu, and Shuxiang Yi. "Experimental investigation of dynamic behavior of rotor system with a novel double layers flexible support tilting pad bearing." Advances in Mechanical Engineering 14, no. 8 (2022): 168781322211164. http://dx.doi.org/10.1177/16878132221116482.

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Among all kinds of journal bearings, the tilting pad bearing has the characteristics of high stability. In order to further reduce the vibration and improve the stability of rotor-bearing systems, a novel double layers flexible support tilting pad bearing (DL-FSTPB) is presented in this paper. The bearing utilizes two layers of springs, which have different functions. The offset springs control the swing angle of the tilting pad to ensure the formation of a convergent oil film, and the symmetrical springs are used to change the bearing stiffness coefficient, increase the bearing elasticity, an

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34

Xing, Jichun, and Yong Qin. "A Novel Low-Frequency Piezoelectric Motor Modulated by an Electromagnetic Field." Actuators 9, no. 3 (2020): 85. http://dx.doi.org/10.3390/act9030085.

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For expanding the driving mode of the piezoelectric motor, a novel piezoelectric motor modulated by a magnetic field is proposed. This driving system combines piezoelectric driving and magnetic modulation together and can transform the reciprocating swing of the stator into step running of the rotor via the intermittent magnetic clamping between the rotor and stator. For investigating the inherent character of dynamics, the dynamic equations of key parts of the driving system are established. The natural frequencies and mode functions of the driving system are solved. A prototype was fabricate

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35

Petukhov, I. S., K. P. Akinin, V. G. Kireyev, and V. A. Lavrinenko. "INFLUENCE OF CONTROL CURRENT WAVEFORM ON ROTOR NUTATION OF THREE-DEGREES-OF-FREEDOM ELECTRIC MACHINE." Tekhnichna Elektrodynamika 2023, no. 6 (2023): 36–43. http://dx.doi.org/10.15407/techned2023.06.036.

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The design of the electric machine with three degrees of freedom of the rotor with an external magnetic core, containing permanent magnets, and an internal magnetic core is considered. The both magnetic cores are rotating. The stator windings (control winding and two-phase rotation winding) are located in the air gap between the magnetic cores. The windings are powered by alternating current of corresponding phase. The positive property of rotor gyrostabilization in such structure is shown. At the same time, the negative fact consists in the nutation under the conditions of forced change in th

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36

Qiu, Ge Fei, Jun Hao Cao, Zi Qing Xu, et al. "Influence of a Flux-Coupling Type Superconducting Fault Current Limiter on Power System Transient Stability." Advanced Materials Research 588-589 (November 2012): 632–37. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.632.

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In this paper, the influence of superconducting fault current limiter (SFCL, flux-coupling type) on power system transient stability is studied in detail. The influence of SFCL to transient stability of power system is studied using a model of single generator infinite bus system, different transient stability calculation results gotten with and without SFCL and with model system in different fault conditions are compared. The results show that the SFCL can effectively reduce the transient swing amplitude of rotor and extend the critical clearance time, and the application of SFCL in the power

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37

Guorui, Xu, Liu Xiaofang, Kang Jinping, Luo Yingli, and Luo Wei. "The influence of turbine generator rotor damping structure and material on first swing stability." Electric Power Systems Research 124 (July 2015): 181–89. http://dx.doi.org/10.1016/j.epsr.2015.03.012.

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38

Li, Shenghu. "Effect of Rotor Speed Change on Electromagnetic Transient and Angular Swing of Synchronous Generators." Electric Power Components and Systems 40, no. 13 (2012): 1486–500. http://dx.doi.org/10.1080/15325008.2012.700384.

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39

Oluwafemi, E. Oni, G. Swanson Andrew, and Pillay Carpanen Rudiren. "Impact of LCC–HVDC multiterminal on generator rotor angle stability." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (2020): 22–34. https://doi.org/10.11591/ijece.v10i1.pp22-34.

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Multiterminal High Voltage Direct Current (HVDC) transmission utilizing Line Commutated Converter (LCC-HVDC) technology is on the increase in interconnecting a remote generating station to any urban centre via long distance DC lines. This Multiterminal-HVDC (MTDC) system offers a reduced right of way benefits, reduction in transmission losses, as well as robust power controllability with enhanced stability margin. However, utilizing the MTDC system in an AC network bring about a new area of associated fault analysis as well as the effect on the entire AC system during a transient fault conditi

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40

Oh, HyungSeon. "Analytic solution to swing equations in power grids with ZIP load models." PLOS ONE 18, no. 6 (2023): e0286600. http://dx.doi.org/10.1371/journal.pone.0286600.

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Objective This research pioneers a novel approach to obtain a closed-form analytic solution to the nonlinear second order differential swing equation that models power system dynamics. The distinctive element of this study is the integration of a generalized load model known as a ZIP load model (constant impedance Z, constant current I, and constant power P loads). Methods Building on previous work where an analytic solution for the swing equation was derived in a linear system with limited load types, this study introduces two fundamental novelties: 1) the innovative examination and modeling

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Oni, Oluwafemi Emmanuel, Andrew G. Swanson, and Rudiren Pillay Carpanen. "Impact of LCC–HVDC multiterminal on generator rotor angle stability." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (2020): 22. http://dx.doi.org/10.11591/ijece.v10i1.pp22-34.

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<span>Multiterminal High Voltage Direct Current (HVDC) transmission utilizing Line Commutated Converter (LCC-HVDC) technology is on the increase in interconnecting a remote generating station to any urban centre via long distance DC lines. This Multiterminal-HVDC (MTDC) system offers a reduced right of way benefits, reduction in transmission losses, as well as robust power controllability with enhanced stability margin. However, utilizing the MTDC system in an AC network bring about a new area of associated fault analysis as well as the effect on the entire AC system during a transient f

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IWAMOTO, Katsumi, and Yukio HORI. "A study on the static characteristcs of swing pad journal bearings applied to horizontal rotor." Transactions of the Japan Society of Mechanical Engineers Series C 55, no. 510 (1989): 396–400. http://dx.doi.org/10.1299/kikaic.55.396.

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Kodama, Akio, Motonobu Goto, Tsutomu Hirose, and Toshimi Kuma. "Temperature Profile and Optimal Rotation Speed of a Honeycomb Rotor Adsorber Operated with Thermal Swing." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 27, no. 5 (1994): 644–49. http://dx.doi.org/10.1252/jcej.27.644.

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Yuan, Hui Qun, Ying Li, Dong Li, and Wen Bo Wu. "The Control and Dynamical Analysis on Magnetic Bearing Flexible Rotor System Combining the Whirling with Swing." Advanced Materials Research 189-193 (February 2011): 1592–96. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1592.

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Considering gyroscopic effect and flexibility of the shaft, the eight freedoms dynamic model is established. The dynamic characteristic and control quantity in different bearing rigidity and rotation axis are studied and discussed by optimal control theory. Furthermore, the controlling and the responding are discussed. The simulation results show that the bearing rigidity has great effect on the control quantity so that the elasticity of bearing must be considered. The asymmetry rigidity of rotational axis has little influence on stability. The conclusion may bring up theoretical references fo

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Yang, Dengfeng, Kai Wang, Huaiyu Wang, Qian Zhang, Xinguo Lei, and Leon Hu. "An Investigation of the Performance and Internal Flow of Variable Nozzle Turbines with Split Sliding Guide Vanes." Machines 10, no. 11 (2022): 1084. http://dx.doi.org/10.3390/machines10111084.

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In order to effectively weaken the leakage flow and shock intensity of traditional “swing” type guide vanes in a variable nozzle turbine, a new flow control device named the “split sliding guide vane” (SSGV) is studied in the present work. Steady and unsteady calculations were carried out on both the SSGV and base model at 10%, 40%, and 100% open positions. The shock test was performed to verify the accuracy of the numerical method. The results showed that at 10%, 40%, and 100% open positions, the leakage flow of the SSGV was 43%, 51%, and 40% of that of the base model, respectively. When 10%

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Lin, Yifeng, Jiawei Hu, Tong Wang, and Zengping Wang. "Impact Mechanisms of Commutation Failure Caused by a Sending-End AC Fault and Its Recovery Speed on Transient Stability." Electronics 12, no. 16 (2023): 3439. http://dx.doi.org/10.3390/electronics12163439.

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A sending-end AC fault may lead to commutation failure (CF) in a line-commutated converter high-voltage direct current (LCC-HVDC) system. In this paper, a theoretical analysis of the impact mechanisms of a CF and its recovery speed on the transient stability of a sending-end power system (TSSPS) is performed. Firstly, the models of the sending-end power system and DC power of CF are established; the ramp function is utilized to characterize the DC power recovery process. Secondly, the swing direction of the relative rotor angle caused by a sending-end AC fault is discussed, and the DC power fl

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Zhang, Haopeng, Xiangyu Zhai, Jiahui Zhang, Xiang Bai, and Zening Li. "Mechanism Analysis of the Effect of the Equivalent Proportional Coefficient of Inertia Control for a Doubly Fed Wind Generator on Frequency Stability in Extreme Environments." Sustainability 16, no. 12 (2024): 4965. http://dx.doi.org/10.3390/su16124965.

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With the large-scale access of a doubly fed wind generator (DFWG) with inertia adjustment capability to the polar microgrid, the frequency stability characteristics of the polar microgrid become more complicated. To enhance DWFG frequency stability and ensure the safe and reliable operation of polar microgrids, a DFWG connected to a two-region interconnected polar microgrid is used as the research background for this paper. Firstly, the equivalent model of two regional inertia centers is derived, and the effect of DFWG virtual inertia on the rotor motion equation of the regional inertia center

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Shimono, Kanae, Koji Inoue, Hiroshi Okano, Yosuke Matsukuma, and Akio Kodama. "Preparation of a Honeycomb Adsorbent Rotor for a Thermal Swing Continuous CO₂ Adsorber." KAGAKU KOGAKU RONBUNSHU 42, no. 1 (2016): 15–21. http://dx.doi.org/10.1252/kakoronbunshu.42.15.

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Lin, Gui Yu, Jie Li, Jin Hua Lian, and Jun Zhao. "Dynamic Load Calculation of Mining Shovel Crowding System." Advanced Materials Research 960-961 (June 2014): 1383–88. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1383.

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To highlight the main factors, only the crowding shaft was taken as elastic component, while the other crowding system parts, such as girth, driving shaft and swing arm were taken as rigid components; the effects of damping were ignored; the dynamical model of excavator’s crowding system was simplified to a two degree of freedom model; mathematical and mechanical models were derived by Lagrange equation method; the locked rotor condition, when the bucket rod was perpendicular to the boom, was used as the calculation condition; the calculated dynamic load coefficient of the crowding system was

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Yu, Xinming, Francesco Iannuzzo, and Dao Zhou. "Model-Based Thermal Stress and Lifetime Estimation of DFIG Wind Power Converter." Energies 17, no. 14 (2024): 3451. http://dx.doi.org/10.3390/en17143451.

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Turbine systems equipped with doubly fed induction generation (DFIG) are becoming increasingly vital in wind power generation, with the reliability of the devices serving as a pillar in the industrial sector. Thermal stress and lifetime assessment are fundamental indicators in this regard. This paper primarily addresses the thermal stress and lifespan of power semiconductor devices utilized in a DFIG grid-side converter (GSC) and rotor-side converter (RSC). PLECS (Piecewise Linear Electrical Circuit Simulation) is employed to validate the electrical and thermal stress of the power devices. Add

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