Diagnostics of a selected AC drive using parallel processing

It is assumed in this paper that the aim of power electronic converter diagnostics is to find out the actual converter's state and to automatically formulate a diagnosis to correct it. The result of the diagnostics' operation was either confirmation of the converter's correctness or detection and isolation of faults. To formulate the diagnosis the paper uses fast orthogonal transforms. A direct frequency converter is considered as an example in which the diagnostics was based on using an algorithm of a fast Haar transform. Control of the converter and its diagnostics were set up by employing parallel processing, which enabled real-time requirements to be met.