A NEW PULSE INJECTION CURRENT PATTERN FOR ROTOR POSITION ESTIMATION

摘要

A system and method (800) for estimating a position and a speed of a rotor (120) of a Switched Reluctance (SR) machine (118) is provided. The SR machine (118) comprises the rotor (120), a stator (122) and at least one winding. The method (800) includes generating a diagnostic pulse having a trapezoidal shape. The method (800) further includes injecting a diagnostic pulse into the at least one winding of the SR machine (118). The method (800) further includes measuring an actual stator current flowing through the at least one winding of the SR machine (118). The method (800) further includes computing an estimated stator current flowing through the at least one winding using observer-based estimation technique. The estimated stator current is compared with the actual stator current to compute an error signal. At least one of the position and the speed of the rotor (120) is estimated based on the error signal.