Samenvatting
Series-resonant converters are widely used as highlyefficient converters. For bidirectional operation however, there
is lack of a dynamical control method. As a result, the series resonant
converter is either dismissed for bidirectional flow or
a steady state modulation method is used. Optimal trajectory
control is a modulation method that utilizes the full dynamical
potential of the unidirectional series-resonant converter. It is used
for a soft-switching, cycle-by-cycle control strategy, resulting in
a dead-beat controller. In this paper, a new optimal trajectory
control is proposed that conserves all the advantages of the
unidirectional optimal trajectory control and allows bidirectional
power flow. As optimal trajectory control transfers a set amount
of charge to or from the output each cycle, a feedforward function
can be implemented to set the output current rather than the
charge. This paper proposes the non-linear feedforward function
that results in direct current control of the converter output
current. The validity of the bidirectional optimal trajectory
control and the direct current control is verified through both
simulations and measurements on a 1 kW prototype converter.
Datum prijs | 9 nov. 2022 |
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Originele taal | Engels |
Begeleider | Henk Huisman (Afstudeerdocent 1), Bas J.D. Vermulst (Afstudeerdocent 2) & Jan M. Schellekens (Afstudeerdocent 2) |