Development of a High Efficiency Induction Motor and the Estimation of Energy Conservation Effect

<b>Trends in Recent Research on Main Circuits and Traction Systems for Railway Vehicles</b>

“…However, many railway operators still chose to have induction motors on their new vehicles, one reason being that every AVAF inverter requires a dedicated permanent magnet synchronous motor which bloats costs and secondly because powerful magnets require very careful maintenance. On induction motors, a "high efficiency induction motor [3]" featuring low-loss material, an optimum number of stator winding turns, a redesigned rotor, etc. was developed.…”

Optimization of thermal modes and cooling systems of the induction traction engines of trams

“…There are possible ways of solving the problem: reducing losses in the elements of traction engines design [1,11] and increasing the efficiency of air-cooling system [2,9], as well as the installation of a water cooling system [4]. Optimization of the processes of designing the traction engines, common at the enterprises of leading electrotechnical manufacturers, makes it possible to create traction engines optimal by efficiency [2,12].…”