Abstmct- The paper descrlbes a double-buck and boost
converter structure suitable for battery charger in electrical
vehicle application. It is very convenient to use inverter elements for battery charging task. Different
DC to DC converter structures can be organized *om
the inverter semiconductor elements. In the case of the
induction motor electrical drive application, the required
inductors could be established from the motor windings.
Such combined converter should satis@ the unity power
factor operation as well. By using the doublebuck circuit
the current high harmonic distortion will be either
avoided or significantly reduced. The boost converter
established from the inverter elemonts enables the en- ergy transfer from the mains to the load during the
whole mains voltage half period. Such combined converter
does not need any additional semiconductor or
inductor elements except the diode bridge.