PM motor sensorless position detection based on iron B-H local hysteresis

Author

Scaglione, Omar ; Markovic, Miroslav ; Perriard, Yves

Author_Institution

Inst. of Microengineering (IMT), Ecole Polytech. Fed. de Lausanne (EPFL), Neuchatel, Switzerland

fYear

2009

fDate

15-18 Nov. 2009

Firstpage

1

Lastpage

6

Abstract

A sensorless position detection technique for a permanent magnet (PM) motor with non-salient rotor is presented. It is shown that the phase self inductances and resistances measured at higher frequencies vary slightly with the rotor position. The origin of the variations is found in the iron B-H hysteresis characteristics. In order to exploit these small variations for the rotor position detection, a measurement setup is proposed. The technique is tested and shows good results and promises further developments.

Keywords

brushless DC motors; hysteresis; permanent magnet motors; position measurement; BLDC motor; PM motor sensorless position detection technique; iron B-H local hysteresis; nonsalient rotor; permanent magnet motor; phase self inductance; rotor position detection; Electrical resistance measurement; Hysteresis motors; Iron; Magnetic anisotropy; Magnetic hysteresis; Perpendicular magnetic anisotropy; Phase measurement; Position measurement; Rotors; Saturation magnetization; B-H hysteresis; BLDC motor; low speed; position detection; sensorless;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5177-7

Electronic_ISBN

978-4-88686-067-5

Type

conf

DOI

10.1109/ICEMS.2009.5382875

Filename

5382875