scholarly journals Independently Rotating Wheels With Induction Motors for High Speed Trains

Volume 2 ◽  
2004 ◽  
Author(s):  
B. Liang ◽  
S. D. Iwnicki ◽  
F. J. Swift
Keyword(s):  
Motor Control ◽  
High Speed ◽  
Induction Motors ◽  
Dynamic Control ◽  
Field Orientation ◽  
Stability Performance ◽  
Performance Requirements ◽  
Field Orientation Control ◽  
High Speed Trains ◽  
The Stability

Railway vehicles with conventional sets often cause problems of hunting and severe wear. The use of an independently rotating wheel set (IRW) would eliminate the cause of wheel set hunting and wear since an IRW can decouple the wheels. This paper presents an investigation into the design of a suitable motor configuration and controller for IRW in order to provide the stability required to satisfy the performance requirements. A computer model of the mechanical and electrical parts of the system was developed. Simulation and experiments of the wheelsets with active driving motor control have demonstrated that a wheelset with independently driven wheels has a good stability performance over a traditional wheelset. Controllers with indirect field orientation control for dynamic control of a motor have shown to be suitable for this application in both its response and its controllability.

scholarly journals Independently Rotating Wheels with Induction Motors for High-Speed Trains

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
B. Liang ◽  
S. D. Iwnicki
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Dynamic Control ◽  
Feedback Mechanism ◽  
Wheel Wear ◽  
Field Orientation ◽  
Railway Vehicles ◽  
Stability Performance ◽  
Field Orientation Control ◽  
High Speed Trains

Railway vehicles with conventional wheelsets often experience problems of lateral instabilities or severe wear when running at high speed. The use of an independently rotating wheelset (IRW) can potentially eliminate the cause of wheelset hunting and reduce wheel wear as the mechanical feedback mechanism causing the problem is decoupled. This paper presents an investigation into the design of a novel induction motor configuration and controller for IRW in order to provide the stability required to satisfy the performance requirements for railway vehicles. A computer model of the mechanical and electrical parts of the system was developed. Simulation and experiments of the wheelsets with active driving motor control have demonstrated that a wheelset with independently driven wheels has a good stability performance over a traditional wheelset. Controllers with indirect field orientation control for dynamic control of an induction motor have shown to be suitable for this application in both its response and its controllability.

scholarly journals A New High Speed Induction Motor Drive based on Field Orientation and Hysteresis Current Comparison

2016 ◽  
Vol 67 (5) ◽  
pp. 334-342
Author(s):  
Cosmas Ogbuka ◽  
Cajethan Nwosu ◽  
Marcel Agu
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Closed Loop ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Field Orientation ◽  
Effective Current ◽  
Field Orientation Control ◽  
Motor Drive System ◽  
Speed Response

Abstract This paper presents a new high speed induction motor drive based on the core advantage of field orientation control (FOC) and hysteresis current comparison (HCC). A complete closed loop speed-controlled induction motor drive system is developed consisting of an outer speed and an inner HCC algorithm which are optimised to obtain fast and stable speed response with effective current and torque tracking, both during transient and steady states. The developed model, being speed-controlled, was examined with step and ramp speed references and excellent performances obtained under full load stress. A speed response comparison of the model with the standard AC3 (Field-Oriented Control Induction Motor Drive) of MATLAB Simpower systems shows that the model achieved a rise time of 0.0762 seconds compared to 0.2930 seconds achieved by the AC3. Also, a settle time of 0.0775 seconds was obtained with the developed model while that of the AC3 model is 0.2986 seconds confirming, therefore, the superiority of the developed model over the AC3 model which, hitherto, served as a reference standard.

A new strategy for hunting alarm and stability evaluation for railway vehicles based on nonlinear dynamics analysis

2019 ◽  
Vol 234 (1) ◽  
pp. 54-64
Author(s):  
Yuanchen Zeng ◽  
Weihua Zhang ◽  
Dongli Song
Keyword(s):  
Nonlinear Dynamics ◽  
High Speed ◽  
Health Management ◽  
Rapid Development ◽  
Railway Vehicles ◽  
Stability Performance ◽  
New Strategy ◽  
Time Domains ◽  
The Stability ◽  
Selection Of

Due to the rapid development of high-speed railways, there is an extensive need for the condition monitoring of the stability of vehicles. Considering the weakness of the current alarm standards, a new index is introduced for describing the periodicity of the state variable series in the nonlinear dynamics system, and a new guideline – based on the proportion distribution of the index – is proposed for detecting the hunting and for evaluating the stability performance in both the space and time domains. Then, the selection of algorithm parameters is conducted and the generalization ability is validated; a number of simulations and tests are applied to further verify its effectiveness. The advantages of this new method, such as an accurate alarm for hunting motions, evaluation of vehicle dynamics, robustness and feasibility of the real time application, are highlighted. This method can further contribute to the prognostic and health management of railway vehicles through early warning and condition assessment.

scholarly journals Sustainability Aspects of Energy Conversion in Modern High-Speed Trains with Traction Induction Motors

2015 ◽  
Vol 7 (3) ◽  
pp. 3441-3459 ◽  
Author(s):  
Marc Rosen ◽  
Doru Nicola ◽  
Cornelia Bulucea ◽  
Daniel Cismaru
Keyword(s):  
Energy Conversion ◽  
High Speed ◽  
Induction Motors ◽  
High Speed Trains

A new High Speed and Accurate FPGA-based Maximum Power Point Tracking Method for Photovoltaic Systems

2017 ◽  
Vol 8 (3) ◽  
pp. 1335
Author(s):  
Adnane Hassani ◽  
Mountassar Maamoun ◽  
Rezki Tadrist ◽  
Ali Nesba
Keyword(s):  
High Speed ◽  
Maximum Power ◽  
Photovoltaic Systems ◽  
Point Tracking ◽  
Stability Performance ◽  
Power Point Tracking ◽  
Perturb And Observe ◽  
Power Point ◽  
The Stability ◽  
Xilinx Fpga

We introduce in this paper a new FPGA-based Maximum Power Tracker for photovoltaic systems. The developed approach targets to modify the perturb and observe in view of reaching rapid tracking and achieving excellent accuracy, while keeping the stability performance and the reduced complexity. To perform this improvement, an automatic and smart two steps switcher is integrated, in addition inputs FIR filters are incorporated<strong>. </strong>Therefore, a high sampling frequency is attained, and consequently the tracking speed is improved. MATLAB simulations and the Xilinx FPGA implementation results show that the improved approach reaches a performance very close to the recently published MPPT methods, with lesser complexity.

A Statistical Study of Process Variables to Optimize a High Speed Curtain Coater: Part I

TAPPI Journal ◽  
2009 ◽  
Vol 8 (1) ◽  
pp. 20-26 ◽  
Author(s):  
PEEYUSH TRIPATHI ◽  
MARGARET JOYCE ◽  
PAUL D. FLEMING ◽  
MASAHIRO SUGIHARA
Keyword(s):  
Boundary Layer ◽  
Experimental Design ◽  
High Speed ◽  
Statistical Study ◽  
Process Variables ◽  
High Speeds ◽  
The Stability ◽  
Air Removal ◽  
Removal System

Using an experimental design approach, researchers altered process parameters and material prop-erties to stabilize the curtain of a pilot curtain coater at high speeds. Part I of this paper identifies the four significant variables that influence curtain stability. The boundary layer air removal system was critical to the stability of the curtain and base sheet roughness was found to be very important. A shear thinning coating rheology and higher curtain heights improved the curtain stability at high speeds. The sizing of the base sheet affected coverage and cur-tain stability because of its effect on base sheet wettability. The role of surfactant was inconclusive. Part II of this paper will report on further optimization of curtain stability with these four variables using a D-optimal partial-facto-rial design.

Battery Self-Traction System for High-Speed Trains

2020 ◽  
Vol 140 (5) ◽  
pp. 349-355
Author(s):  
Hirokazu Kato ◽  
Kenji Sato
Keyword(s):  
High Speed ◽  
High Speed Trains ◽  
Traction System
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