... HIGH PERFORMANCE DRIVES E Levi, 200150regarded as constant). Equations derived for the current-fed ... fixed sensors are used in the air-gap of the machine, displaced by 90 degrees). Magnitude and HIGH PERFORMANCE DRIVES E Levi, 200151position of the rotor flux space vector can then be obtained ... (2.24)-(2.26), together with flux linkage equations (2.21), suggests the following procedure: HIGH PERFORMANCE DRIVES E Levi, 200152iiiiiiisabcsbcαβ=−−=− − +(/)( . . )(/)( / /)2...