Transient Performance of Permanent Magnet AC Motor Drives

The transient behavior of permanent magnet ac motor drives is analyzed. A new model is proposed where particular emphasis is placed on the role that armature reaction and saturation effect play on the flux distribution of the machine. Equations for calculation of these fluxes are deduced and verified by experimental tests on the machine. Simulation of motor transients both for constant and variable speed operations are presented and compared with experimental tests.