Title :
An analytical formula for the back emf of a slotted BLDG motor
Author :
Markovic, Miroslav ; Perriard, Yves
Author_Institution :
Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne
Abstract :
The paper presents a completely analytical formula to determine the phase back emf of a slotted BLDC motor with interior or exterior rotor and parallel or radial permanent magnet (PM) magnetization and concentrated winding. The formula is based on integration of an analytical solution for the PM magnetic field in the motor air gap. Six combination of the number of slots and number of poles (Ng/Np) are considered: 6/4, 9/6, 6/8, 12/10, 9/12 and 12/14. The results are verified using a finite elements software.
Keywords :
air gaps; brushless DC motors; electric potential; magnetic fields; magnetisation; permanent magnets; PM magnetic field; brushless dc motor; concentrated winding; exterior rotor; finite elements software; interior rotor; motor air gap; parallel permanent magnet magnetization; phase back emf; radial permanent magnet magnetization; slotted BLDC motor; Brushless DC motors; Magnetic analysis; Magnetic fields; Magnetic flux; Permanent magnet motors; Permanent magnets; Permeability; Rotors; Saturation magnetization; Teeth;
Conference_Titel :
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International
Conference_Location :
Antalya
Print_ISBN :
1-4244-0742-7
Electronic_ISBN :
1-4244-0743-5
DOI :
10.1109/IEMDC.2007.383656
