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With the growing concern on the environment and limited petroleum, the transportation field has been looking for alternative modes, vehicle segments, and improved operation strategies. On the other hand, with the growing transportation issues on urban applications in the trend of increasing numbers of mega cities and elderly populations, the personal mobility vehicle concept is being studied especially...
This paper deals with a new configuration of gearless wheel mounted drives of trams. It introduces profitable properties of interior permanent magnet synchronous motor (IPMSM) for the drive and designs its new control strategy. The proposed control is based on a field oriented control linked to a rotor flux and optimally utilizes the reluctance component of torque in order to achieve maximum motor...
This paper deals with a propulsion system of new full low-floor trams manufactured by Škoda Plzeň company employing gearless wheel drives with surface-mounted permanent magnet synchronous motors (PMSM). Main attention is paid to developed drive control and its smart diagnostics - specifically, we present proposed algorithms for automatic identification of an incorrect rotor position sensor calibration,...
In most conventional EV applications, a central high speed electric motor is mechanically coupled to the wheels by a single speed reduction gearbox and a mechanical differential. An innovative alternative utilizes low speed, high torque, gearless, electric motors, mounted completely inside the rim of the wheels, to provide instantaneous torque and eliminate driveline transmission losses. These in-wheel...
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