DC-DC converter with bipolar output and use of it to connect a distributed generation system to a Bipolar DC network

摘要

DC-DC converter with bipolar output and use of it for the connection of a distributed generation system to a bipolar DC network. The DC-DC converter (10) has an input for the connection of a DC source with monopolar output (9) and a bipolar voltage output, with the same voltages but with opposite polarities. The DC-DC converter (10) comprises three inductors (L {sub, 1}, L {sub, 2}, L {sub, 3}), four capacitors (C {sub, 1}, C {sub, 2} , C {sub, 3}, C {sub, 4}), two diodes (D {sub, 1}, D {sub, 2}) and a power switch (11) as a switching device. The main advantage of this topology is to use a single switching device to obtain a balanced bipolar output. In addition, the power switch control terminal (11) is grounded, which simplifies the design of the power switch gate excitation device (11).