A modified Buck-Boost converter with output filter is treated as a switched mode power supply andas a two quadrant driver for DC machines. The modification is done by changing the position of the capacitorof the Buck-Boost. With this modification the input and the output currents of the converter are steady and themaximum input current is reduced compared to a normal Buck-Boost. The function of the modified converter isexplained with the help of time signals, the large signal and the small signal models are derived, the transferfunctions for the speed are calculated, dimensioning hints are given, and simulations are shown.
Modified Buck-Boost Converter as DC Motor Driver with ContinuousInput Current
