Nikulin V. Efficiency inerease of traktive electricity transmissions of underground cars with asynchronous engines

The object is Electromagnetic and heat processes taking place in blocks of tractive asynchronous electric transmission of a metro car. The aims: efficiency increase of tractive electricity transmissions of underground cars with asynchronous engines by the grounding of structure choice; the improvement of blocks and the development of engineering methods of calculation of tractive electric transmission elements. The methods: of main harmonics; commutating function; integral method; node potential. The new approach: the structure of an inlet hybrid filter and the method of its main characteristics determination have been developed; the structure of power phase module with improved (advanced) node of uniform commutation and the methods of its elements calculation have been improved; heat models of power keys have been developed. Degree of introduction: OSC “Elektromashina”, IC “Energosberezhenie”, UkrSART, Kharkov; PC “Kiev’s underground”, Kiev. Field of application: Underground car building.