Sensorless Direct Torque Control for Electrically Excited Synchronous Motor Based on Injecting High-Frequency Ripple Current Into Rotor Winding

A novel rotor position angle estimator is proposed to achieve zero and very low operation speed for sensorless direct torque-controlled electrically excited synchronous motor (EESM) drive. First, high-frequency ripple current is injected into rotor winding, and second, using closed-loop torque contr...

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Veröffentlicht in:	IEEE transactions on energy conversion 2015-03, Vol.30 (1), p.246-253
Hauptverfasser:	Zhou, Yangzhong, Long, Shipeng
Format:	Artikel
Sprache:	eng
Schlagworte:	Direct torque control (DTC) electrically excited synchronous motor (EESM) Electromagnetics Excitation Flux Hafnium Ripples rotor high-frequency (HF) ripple current Rotors sensorless Stator windings Stators Synchronous motors Torque Winding
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