scholarly journals THE ASPECT OF VECTOR CONTROL USING THE ASYNCHRONOUS TRACTION MOTOR IN LOCOMOTIVES

Transport ◽  
2009 ◽  
Vol 24 (4) ◽  
pp. 318-324 ◽  
Author(s):  
Lionginas Liudvinavičius ◽  
Leonas Povilas Lingaitis ◽  
Stasys Dailydka ◽  
Virgilijus Jastremskas
Keyword(s):  
Diesel Engine ◽  
Vector Control ◽  
Electric Drive ◽  
Entire Range ◽  
Movement Speed ◽  
Main Task ◽  
Traction Motor ◽  
Traction Motors ◽  
Tractive Effort ◽  
Asynchronous Traction Motor

The article examines curves controlling asynchronous traction motors increasingly used in locomotive electric drives the main task of which is to create a tractive effort‐speed curve of an ideal locomotive Fk = f(v), including a hyperbolic area the curve of which will create conditions showing that energy created by the diesel engine of diesel locomotives (electric locomotives and in case of electric trains, electricity taken from the contact network) over the entire range of locomotive speed is turned into efficient work. Mechanical power on wheel sets is constant Pk = Fkv = const, the power of the diesel engine is fully used over the entire range of locomotive speed. Tractive effort‐speed curve Fk(v) shows the dependency of locomotive traction power Fk on movement speed v. The article presents theoretical and practical aspects relevant to creating the structure of locomotive electric drive and selecting optimal control that is especially relevant to creating the structure of locomotive electric drive using ATM (asynchronous traction motor) that gains special popularity in traction rolling stock replacing DC traction motors having low reliability. __e frequency modes of asynchronous motor speed regulation are examined. To control ATM, the authors suggest the method of vector control presenting the structural schemes of a locomotive with ATM and control algorithm.

scholarly journals Method of Selecting Energy-Efficient Parameters of an Electric Asynchronous Traction Motor for Diesel Shunting Locomotives—Case Study on the Example of a Locomotive Series ChME3 (ЧMЭ3, ČME3, ČKD S200)

Energies ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 317
Author(s):  
Valeriy Kuznetsov ◽  
Ewa Kardas-Cinal ◽  
Piotr Gołębiowski ◽  
Borys Liubarskyi ◽  
Magomedemin Gasanov ◽  
...  
Keyword(s):  
Electric Drive ◽  
Energy Efficient ◽  
High Efficiency ◽  
Gear Ratio ◽  
Traction Motor ◽  
Term Operation ◽  
Asynchronous Electric Drive ◽  
Asynchronous Traction Motor ◽  
Modernization Process ◽  
Electric Traction

One of the assumptions made during the modernization process of diesel shunting locomotives is the replacement of a diesel traction motor with a DC generator with an electric asynchronous traction motor. The article aimed to develop a method of selecting energy-efficient parameters of an asynchronous electric traction motor for diesel shunting locomotives, which will ensure that its operating energy efficiency will be as high as possible. The method was verified on the example of a locomotive series ChME3 (ЧMЭ3, ČME3, ČKD S200). It has been found that using a traction asynchronous electric drive on a ChME3 locomotive, its efficiency increases in comparison with DC electric motors by 3–5% under the long-term operation modes and by 7–10% during locomotive operation with traction at the adhesion limit. Using a new traction gearbox with a higher gear ratio expands the speed range in which the asynchronous traction drive operates with a high-efficiency factor. It is effective to use a traction asynchronous electric drive to modernize ChME3 diesel locomotives in case of their use under the modes requiring the implementation of maximum traction forces at low speeds. A further increase in the efficiency of the traction asynchronous electric drive is possible based on the optimal design of the wheel-motor unit and the asynchronous traction electric drive.

Traction Motor Experience on Toronto Subway

1981 ◽  
Vol 195 (1) ◽  
pp. 347-356 ◽  
Author(s):  
W G Jowett
Keyword(s):  
Test Bed ◽  
Traction Motor ◽  
Traction Motors ◽  
Motor Experience ◽  
History Of

The paper gives a brief history of the Toronto Subway and how a British company became involved in the supply of prototype traction motors to the Toronto Transit Commission (TTC) followed in 1971 by the supply of motors for the H2 stock. On the test bed these motors were shown to be up to specification with reasonable margins on rating and commutation, but after varying periods in service, problems arose which were dealt with and overcome effectively except for one problem connected with commutator face erosion, which became known as the TIR problem'2, the cause of which proved to be most elusive. The main content of the paper concerns the search for the cause and a solution to this problem. In 1973, TTC called for tenders for further subwaycars (the H4 stock). At this stage, causes and solutions to the TIR problem had been suggested and interim results were promising. However, after negotiating special guarantees, eventually an order was received for H4 stock motors which incorporated improvements and the suggested remedies to the ‘TIR problem’. These motors have now satisfactorily completed over 400 000 miles in service showing that the solutions applied were sound and effective and it is now estimated that the period between commutator skimming will be 500 000 miles or over.

THEORETICAL AND PRACTICAL PERSPECTIVES OF DIESEL LOCOMOTIVE WITH DC TRACTION MOTORS WHEEL-SETS’ SLIPPING AND SLIDING CONTROL

Transport ◽  
2012 ◽  
Vol 26 (4) ◽  
pp. 335-343 ◽  
Author(s):  
Lionginas Liudvinavičius ◽  
Gintautas Bureika
Keyword(s):  
Automatic Control ◽  
Electric Drive ◽  
Drive System ◽  
Diesel Locomotive ◽  
New Methods ◽  
Traction Motors ◽  
Factors Influencing ◽  
Electric Drive System ◽  
Driving Wheel ◽  
Main Factors

The causes of slipping and sliding of the locomotive's driving wheel-sets are analysed from theoretical and practical perspectives. The main factors influencing wheel-sets’ slipping are described, and their correlation is determined. The specific methods of stopping the slipping of the Diesel locomotives and having a conventional electric drive system are described in the paper. The process of wheel-sets’ slipping and its control are simulated and shown graphically. Structural diagrams demonstrating the control of the dynamic locomotive wheel-sets’ slipping and sliding, based on the evaluation of the influence of the speed-torque characteristics of DC traction motors on these processes, are presented. Major parameters of the DC/DC and AC/DC systems used in the automatic control of the dynamic slipping and sliding of the locomotive's wheel-sets are defined and new methods of controlling the dynamic slipping and sliding are suggested.

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