Some novel four-quadrant DC-DC converters

Several four-quadrant converter topologies are introduced in this paper. From the voltage gain point of view, it is found that the proposed four-quadrant converter topologies are combination of the buck, boost and buck-boost type converters. One of the four proposed topologies is analyzed and discussed as an example in this paper. Some proposed topologies with only one active switch and one diode can be operated in two quadrants. They can also have four quadrant operation if two active switches and their anti-parallel diodes are used. The proposed topologies are compared with the basic DC-DC converter topologies and several interesting conclusions are made. Some simulation results are presented