21-46 UTILIZAREA MAṢINII ASINCRONE ÎN ACŢIONAREA HIBRIDᾸ ṢI PUR ELECTRICᾸ A AUTOMOBILELOR
ASYNCHRONOUS MOTOR UTILISATION IN HYBRID AND
ELECTRICAL VEHICLES
The performance and fuel economy of a fuel cell powered vehicle [1]
are greatly improved by the use of a hybrid drive train. The hybridization allows
taking full advantage of the fuel cell system efficiency characteristics.
The fuel cell is thus operated at average power demands where it is
the most efficient, while the batteries supply the traction motors at low power
demands and assists the fuel cell at high power demands.
One investigates the possible fuel cell hybrid drive trains and
compares on the grounds of fuel economy and feasibility. Then, based on the
conclusions of this first analysis, a discussion of the most suitable electric
motors will follow.
Then it is presented a solution based on the asynchronous motor,
highlighting it’s advatages over other types of drives.
The Induction Motor (IM) is, without any doubt, the workhorse in
industry due to its ruggedness, simple technology and low cost. During the last
decade, the induction motor has been replaced in many variable speed drives
by the Permanent Magnet (PM) motor since the PM machine has better
efficiency and higher torque density [2]. That was possible also due to a
significant reduction of the magnets cost that happened in the past.
The goal of the paper is to investigate the possibility to use the FVC(Flux
Vector Control) for induction motors in traction applications.
Cuvinte cheie: automobil electric, lanț de transmisie, maşină asincronă
Keywords: electric car, chain transmission, asynchronous machine