ROBUST LOW-COST IMPLEMENTATION OF VECTOR CONTROL FOR RELUCTANCE SYNCHRONOUS MACHINES

The paper presents an implementation of a low-cost robust digital-anal ogue (hybrid) speed (and position) vector controller for cageless-roto r reluctance synchronous motors. Separate control of i(d) and i(s) is performed with i(d) (reference value) constant up to the base speed a nd reducing gradually above the base speed. On the other hand, i(q) ( reference value) is set by a sliding-mode analogue speed (and position ) controller for which a simplified design methodology is presented. A 6-pole experimental reluctance synchronous motor with axially laminat ed anisotropic cageless rotor is introduced with its inductances L(d), L(q) and torque measured through standstill tests. Digital simulation and test results for position and speed vector control are presented.