Method for the phase diagnosis of a multiphase converter

摘要

A method for the phase diagnosis of a multiphase converter for detecting potential errors in individual converter phases is provided, wherein a symmetrical load distribution for the individual converter phases is regulated. During the operation of the converter, the distribution of the load prescribed for each individual phase of the converter is detected at least two different times, at different temperatures, and in any order.

主权项

1. A method for the phase diagnosis of a multiphase converter to detect faults in individual phases of the converter, the method comprising:
providing closed-loop control configured to provide a balanced load distribution for the individual converter phases, performing multiple detections of a distribution of the load between the individual phases of the converter at two or more different times during operation of the converter, and at different temperatures, including: performing a first detection of the distribution of the load between the individual phases of the converter when the converter is at a first temperature, and performing a second detection of the distribution of the load between the individual phases of the converter when the converter is at a second temperature higher than the first temperature, and determining a fault based on the calculated changes in the distribution of the load.