Title :
Stator-flux-based vector control of induction machines in magnetic saturation
Author :
Hofmann, Heath ; Sanders, Seth R. ; Sullivan, Con
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
In many variable-torque applications of induction machines, it is desirable to operate the machine in magnetic saturation, thus allowing the machine to produce higher torques. Stator-flux-based control schemes have been developed as a possible alternative method of control of induction machines. Stator-flux-based control schemes need not depend on the magnetic characteristics of the machine, and hence are potentially more robust and easier to implement in magnetic saturation than rotor-flux-based control. The authors analyze the induction machine in saturation using a nonlinear π-model of the machine´s magnetics, and develop a control scheme in the stator flux reference frame that is independent of magnetics. Experiments carried out on a 3 hp, 1800 RPM wound rotor induction machine show smooth operation of the control scheme at torque levels up to at least 4 times rated torque
Keywords :
asynchronous machines; control system analysis; control system synthesis; machine control; machine testing; machine theory; magnetic flux; magnetic variables control; rotors; stators; torque control; 3 hp; control design; experimental testing; induction machines; magnetic characteristics; magnetic saturation; nonlinear π-model; stator flux-based vector control; wound rotor; Induction machines; Machine vector control; Magnetic analysis; Magnetic flux; Magnetic variables control; Robust control; Rotors; Saturation magnetization; Stators; Wounds;
Conference_Titel :
Industry Applications Conference, 1995. Thirtieth IAS Annual Meeting, IAS '95., Conference Record of the 1995 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-3008-0
DOI :
10.1109/IAS.1995.530296
