Voltage Converter with Soft Communication Networks

摘要

Embodiments of the present invention describe a voltage converter and a method for operating the voltage converter. In one embodiment the voltage converter includes a primary path configured to generate a pulse modulated voltage or current from an input direct current (DC) voltage, a transformer arrangement with m≧1 primary windings and n≧2 secondary windings inductively coupled together, the m primary windings being connected to the primary path, and a secondary path configured to output a pulsed direct current (DC) voltage or current, wherein the secondary path includes n capacitors connected in series and n secondary controllable semiconductor switches, and each of the n secondary windings is connected via at least one of the secondary controllable semiconductor switches to at least one of the capacitors.

主权项

1. A voltage converter comprising:
a primary path configured to generate a pulse modulated voltage or current from an input direct current (DC) voltage; a transformer arrangement with m≧1 primary windings and n≧2 secondary windings inductively coupled together, the m primary windings being connected to the primary path; and a secondary path configured to output a pulsed direct current (DC) voltage or current, wherein the secondary path comprises n capacitors connected in series and n secondary controllable semiconductor switches, and wherein each of the n secondary windings is connected via at least one of the secondary controllable semiconductor switches to at least one of the capacitors; and n soft commutation networks, each connected in parallel to one of the n secondary controllable semiconductor switches, and each of the n soft commutation networks comprising:
a series connection of a commutation inductance, a first commutation diode and a commutation capacitor, the series connection being connected in parallel to the respective secondary controllable semiconductor switch and the commutation inductance being connected to a node between the secondary controllable semiconductor switch and the respective one of the n capacitors; anda second commutation diode connected between the node between the first commutation diode and the commutation capacitor, and the node between the respective secondary winding and the respective one of the n capacitors.