CONTROLLED INDUCTION MOTOR DRIVE IN RAILWAY TRACTION
Typ dokumentu
habilitační prácehabilitation thesis
Autor
Bauer, Jan
Metadata
Zobrazit celý záznamAbstrakt
This habilitation thesis presents
improvements in selected areas of induction
motor drive application in railway traction
vehicles. One of the most common induction
motor control strategies in railway traction
drives, is the Rotor Flux-Oriented Control. To
reach high performance and high efficiency
of the drive, precise knowledge of the
induction motor equivalent circuit
parameters is needed. Inaccurate knowledge
of the induction motor equivalent circuit
parameters leads to FOC detuning, which
causes misalignment of the estimated flux
position and, thus, inaccuracy of the whole
control part. The problematics of induction
motor drive parameter identification and
accuracy of the induction motor model is one
of the key points of the thesis.
The other part of the thesis describes a
slip controller's development for freight
locomotive with the induction motor drive,
that is based on adhesion-slip characteristic
slope detection. The proposed slip controller
is designed to cope with a nonlinearity of the
adhesion-slip characteristic and noise that
occurs in the system. Moreover, the
proposed slip controller does not need to
know the train velocity, the wheelset velocity
is only required parameter. The slip
controller is designed as modular, and it
consists of the adhesion-slip characteristic
slope detection part and a controller part
with acceleration protection.
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