AUTOMATED METHOD AND APPARATUS FOR TESTING A CROWBAR CIRCUIT OF A POWER CONVERTER

摘要

The present disclosure is directed to an automated apparatus and method for testing a crowbar circuit of power converter. The crowbar circuit includes an anti-parallel diode and a voltage-controlled switching element, e.g. a silicon-controlled rectifier (SCR). The method includes implementing a first test sequence for testing operability of the diode and a second test sequence for testing operability of the voltage-controlled switching element. More specifically, the first test sequence determines a first current-voltage feedback that is indicative of the operability of the diode and the second test sequence determines a second current-voltage feedback that is indicative of the operability of the voltage-controlled switching element.

主权项

1. A method for testing a crowbar circuit within a power converter with an existing power conversion assembly of a renewable energy system, the method comprising:
implementing a first test sequence for testing operability of an anti-parallel diode of the crowbar circuit; determining a first current-voltage feedback of the power converter based on the first test sequence, wherein the first current-voltage feedback is indicative of operability of the anti-parallel diode of the crowbar circuit; implementing a second test sequence for testing operability of a voltage-controlled switching element of the crowbar circuit; and, determining a second current-voltage feedback of the power converter based on the second test sequence, wherein the second current-voltage feedback is indicative of operability of the voltage-controlled switching element of the crowbar circuit.