TRACTION ASYNCHRONOUS ENGINE STA-1200

Together with the specialists of the Public Joint-Stock Company "Scientific-Production Enterprise "Smila Electromechanical Plant" employees of the Department of Electromechanics NTUU "Kyiv Polytechnic Institute named after I. Sikorsky" – Prof., D.Sc. Vaskovsky Yu.M. and associate professor, Ph.D. Haidenko Yu.A. have developed a unique frequency-controlled traction electric motor of the type STA-1200 U1.

Electric locomotive ДС-3 with frequency control system, developed by Siemens

     The traction asynchronous engine of type STA-1200 with the power 1200 kW intended for the drive of an alternate current freight-passenger electric locomotive of type ДС-3, which is producing at SPE «Elektrovozobuduvannia» (Ukraine). The design of the engines was developed and serially manufactured at Smila Electromechanical Plant. The engine driven by special frequency converter developed and manufactured by «Siemens».

	SPECIFICATIONS OF THE СТА-1200
	Power, kW	1200
	Voltage, V	1870
	Current, A	450
	Number of phases of stator winding	3
	Frequency range of the supply voltage, Hz	0…146
	Insulation class	Н
	Rotational speed, rpm	1138
	Moment on the shaft, Nm	10400
	Efficiency, %	95,5
	Power factor	0,88
	Weight, kg	2410

DESIGN FEATURES STA-1200

• The engine has a "without the case" design.
• The stator and rotor of the engine are made of sheets of electrical steel and have axial cooling channels.
• The rotor made with a copper "squirrel cage".
• The engine is equipped with sensors of rotational speed and temperature.
• At the manufacturing are used the modern insulating and impregnation materials, which provide high electrical strength and heat resistance of the engine.

     The design of the engine provided optimal traction characteristics of the locomotive in a wide range of speed of its movement. The geometrical dimensions of the toothed-groove zones and the stator and rotor jet, the location and dimensions of the cooling channels, the level of electromagnetic loads and other parameters and characteristics of the engine STA 1200 are optimal and ensure compliance with the specifications.

    References:

1. Vaskovsky Yu.N., Haydenko Yu.A. Application of the field analysis to improve the design of traction asynchronous engines // Electrical engineering and electrical equipment, Issue 67, 2006, p.88 - 94.
2. Vaskovsky Yu.M., Haydenko Yu.A. Investigation by the methods of the theory of fields of characteristics of asynchronous motors with asymmetry of the rotor parameters // "Electrical engineering and electromechanics", № 3, 2007, p.19 - 22.

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