Galvanically insulated reversible direct current-direct current voltage converter i.e. flyback converter, for use on e.g. electric vehicle, has low voltage circuit whose secondary winding is magnetically coupled with primary winding

摘要

The converter (1) has a high voltage circuit (2) comprising a high voltage input (4), a primary winding (9) and a bidirectional controllable current switch (10) connected in series with the primary winding. A low voltage circuit (3) includes a low voltage input (6), a secondary winding (22) magnetically coupled with the primary winding and a bidirectional controllable current switch (23). The high voltage circuit includes an additional primary winding configured to measure the voltage on the low voltage input.