Control Comparison for the Coordinate Transformation of an Asymmetric Dual Three Phase Synchronous Motor in Healthy and Single-Phase Open Fault States

The coordinate transformation method of asymmetric dual three phase synchronous motor (ADTP-SM) is a Double dq transform using two dq-axes and vector space decomposition (VSD) model the orthogonality ADTP-SM. There are several studies comparing methods in healthy state, but few single-phase open fault state. In healthy, when VSD applied, different harmonic orders current projected onto xy-axes (the axis for controlling harmonics current), two-axes orthogonal, so it can be controlled stably. same control logic as situation applied. When applying transform, dq-axis set fluctuates, affects set, cannot model, if both xy-axis controlled, systems do not have stably due to mutual interference. However, only because there no Cartesian system other than dq-axis. state equation verified through experiments simulations, stability according compared.