Converter used as a battery charger and a motor speed controller in an industrial truck
Résumé
This paper present a bi-directional power converter used on one hand as a battery charger and on the
other hand as a motor speed controller. Different possibilities are presented and a comparison of these
structures is carried out. In battery charger mode, the power converter has to absorb a sinusoidal
current with a unit power factor. According to the power range, two possibilities are presented : the
isolated CUK converter with a 1,5kW DC motor and a pulse width modulation (P.W.M.)
inverter/rectifier to supply a 6kW asynchronous motor.
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