Patent ID: 6924993
Filing Date: 2005-08-02
Classification: H02M,Y10S

Abstract:
1. A method of controlling an inverter having a plurality of control inputs and an alternating current multi-phase output, comprising the steps of: converting the alternating current multi-phase output to a direct current equivalent, wherein the direct current equivalent comprises a plurality of voltage elements and associated current elements, each voltage element and its associated current element corresponding to one phase of the multi-phase output; comparing each of the plurality of voltage elements to one of a plurality of reference voltages to create a plurality of difference voltage signals; creating voltage regulating signals from the difference voltage signals, wherein each of the voltage regulating signals comprises a fundamental compensating component combined with an imbalance compensating component; limiting the voltage regulating signals with a current limiting factor derived from the current elements; converting the voltage regulating signals to alternating current equivalents; and producing the plurality of control inputs to the inverter from the alternating current equivalents to thereby enable compensating regulation of the fundamental and imbalance characteristics of the alternating current multi-phase output.