Title :
New self sensing scheme based on INFORM, heterodyning and Luenberger observer
Author :
Ovrebo, Sigurd ; Nilsen, Roy
Author_Institution :
Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
Self sensing techniques for AC machines has been a research topic for almost two decades. Two promising methods are found in injection of high frequency carrier and the INFORM method. Both schemes are based on utilization of saliency in order to make position estimate. The excitation and signal processing for these methods differs. A new scheme based on the INFORM measurements a tracking observer is presented. The new scheme gives the modified INFORM method a close to zero phase lag in rotor position estimate. The new scheme is implemented and evaluated with a 32 kW IPMSM.
Keywords :
machine control; machine theory; observers; permanent magnet motors; position control; rotors; synchronous motors; 32 kW; AC machines; INFORM measurements; INFORM method; Luenberger observer; heterodyning; high frequency carrier injection; interior permanent magnet synchronous motors; position estimate; rotor position estimate; self sensing techniques; signal processing; tracking observer; zero phase lag; Electric machines; Equations; Frequency; Inductance; Phase measurement; Signal processing; Stators; Student members; Synchronous motors; Voltage;
Conference_Titel :
Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International
Print_ISBN :
0-7803-7817-2
DOI :
10.1109/IEMDC.2003.1210700
