Electric Motors for Light Traction Made by master student of the 1 st course: Telegin. A. Telegin. A. Group: EMM - 83 Supervisor: Kamisheva. E. Novosibirsk2018

The main goal of the project is to get a new knowledge in the field of Light traction. The main questions: What is LT drive ?; Which motors are the most suitable for LT drive ? ; Why does producing Hybrid electric vehicle producing so important ? The main goals and questions 2

Light traction drive is a drive type including only trams, high speed trams and other light weight electrical vehicles. Light traction drive 3 Figure 1Figure 2

Motors for light elecric traction drive 4 There are so many different powerful electric motors and each of them has an advantages and backwards. Its well known, that AC electric motors are the most modern now. The main AC motors categories: Cage induction motor PM motor SR motor Figure 3 Figure 4 Figure 5

Cage induction motor 5 Figure 6 – Cage induction motor

6 PM motor A compact power train can be designed at minimum costs if a special stator PMBM, the so called PMBMSCS is coupled to the engine crank shaft. Figure 7 – Disk type motor Figure 8 – Motor-wheel drive

Synchronous reluctance motor An example of new developments in traction motors is the PM assisted synchronous reluctance motor. This is an interior type PM motor with several flux barriers per pole. PMs are placed in each air barrier (longitudinal slot). 7 Figure 9 – Rotor consractionFigure 10– SR motor in a complex

The control system is responsible for governing the operation of the electric motor driven vehicle. The control system receives inputs from the operator, feedback signals from the motor controller and the motor, and also feedback signals from other systems within the vehicle. 8 Control system Figure 11 – Inverter

9 Hybrid electric vehicle – assisting in vehicle propulsion when needed, allowing the use of a smaller internal combustion engine; – operating as a generator, allowing excess energy (during braking) to be used to recharge the battery; – replacing the conventional alternator, providing energy that ultimately feeds the conventional low voltage, e.g., 12 V electrical system; – starting the internal combustion engine very quickly and quietly that allows the internal combustion engine to be turned off when not needed, without any delay in restarting on demand. – damping crankshaft speed variations, leading to smoother idle. Figure 12 – Hybrid electric vehicle

To sum up the author clames, that growing interest in road EVs, LRTs and guided transit systems stimulates research efforts oriented towards innovative solutions to electromechanical traction drives and new types of electric motors. Due to the high requirements of EVs, this is a symptom that traction motor sector will become soon the most dynamic sector in the motion control industry. Conclusion 10