Analysis of frame alignment issues in natural field orientation including non-linear and leakage inductance effects

The natural field orientation (NFO) algorithm is a form of stator flux orientation (SFO) that has the desirable property that it does not use integration to determine the position of the stator flux reference frame. It is also supposed to implicitly correct reference frame errors. However, under certain modes of operation this does not occur. The purpose of… CONTINUE READING