| Autor: |
Inkov, Yu. M., Kosmodamianskiy, A. S., Pugachev, A. A., Morozov, S. V. |
| Zdroj: |
Russian Electrical Engineering; Sep2021, Vol. 92 Issue 9, p476-480, 5p |
| Abstrakt: |
A functional diagram is presented, and the operation principle of a system for traction electric drive control with asynchronous motors providing motor torque setting based on the current restrictions of the locomotive energy facility is briefly described. Formulas are derived for setting the stator current and rotor-flux linkage providing a reduction in power loss in an asynchronous motor depending on the operating mode thereof. To verify the adequacy of the obtained formulas, a vector-control system for an asynchronous motor with the orientation of the coordinate axes according to the flux linkage of the rotor has been used. A two-level stand-alone voltage inverter with space-vector modulation has been used in the power channel of the electric drive. Simulation results are presented for an electric drive with a 637-kW motor. It is shown that the greatest reduction in power loss occurs at a rotation frequency close to the rated value, regardless of the value of the resistance torque. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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