Power supply apparatus, methods and computer program products using D-Q domain based synchronization techniques

摘要

A value of an AC reference waveform (101) is obtained and converted to a d-q reference frame value. A phase estimate (Θ) is generated responsive to the d-q reference frame value. An AC output (102) of the power supply apparatus is controlled responsive to an output current of the power supply apparatus and the phase estimate. For example, an output current value may be obtained and converted to a d-q reference frame current value responsive to the phase estimate, and the AC output may be controlled responsive to the d-q reference frame current value.