Power converter circuit with AC output

摘要

A power converter circuit includes output terminals configured to receive an external AC voltage. At least one series circuit has at least two converter units. Each converter unit includes input terminals configured to be coupled to a DC power source. Output terminals provide an AC output current. The at least one series circuit is connected between the output terminals of the power converter circuit. A voltage measurement circuit is connected between the output terminals of the power converter circuit and configured to provide at least one measurement signal that includes information related to phase and frequency of the external AC voltage. At least one of the converter units is configured to receive the at least one measurement signal and is configured to regulate the generation of the AC output current dependent on the at least one measurement signal.

主权项

1. A power converter circuit, comprising:
output terminals configured to receive an external AC voltage; at least one series circuit with at least two DC/AC converter circuits, each DC/AC converter circuit comprising input terminals configured to be coupled to a DC power source, and output terminals for providing an AC output current, the at least one series circuit connected between the output terminals of the power converter circuit; and a voltage divider circuit connected between the output terminals of the power converter circuit and configured to provide at least one measurement signal that includes a phase and frequency based on the external AC voltage; wherein at least one of the DC/AC converter circuits is configured to receive the at least one measurement signal and is configured to regulate generation of the AC output current dependent on the at least one measurement signal such that a phase difference between the AC output current and the external AC voltage assumes a set value.