POWER CONVERTER WITH COLD START-UP AND COLD START-UP METHOD FOR POWER CONVERTER

摘要

The present invention discloses a converter with cold start-up and a cold start-up method for modular power converters that allows converter operation tests to be carried out without a connection to the AC grid. For that purpose, the control module (3) powers the power converter modules (2a-2n), disconnects the power converter from the AC grid (11), selects a power converter module (2a) as the AC-source module and configures a voltage and a frequency for the AC-source module, selects the power for the other power converter modules (2b-2n) and sets starting conditions. Previously, the control module is powered by an AC source that can be internal or external, such as an uninterruptible power supply (UPS) or a DC source (photovoltaic field), via a DC-AC transformer.