Field-weakening in vector controlled and DTC PMSM drives, a comparative analysis

2000 ◽  
Author(s):  
M. Zordan
Keyword(s):  
Comparative Analysis ◽  
Field Weakening

Comparative analysis of the chosen field-weakening methods for the Direct Rotor Flux Oriented Control drive system

2012 ◽  
Vol 61 (4) ◽  
pp. 443-454 ◽  
Author(s):  
K. Nguyen-Thac ◽  
T. Orlowska-Kowalska ◽  
G. Tarchala
Keyword(s):  
Motor Control ◽  
Comparative Analysis ◽  
Induction Motor ◽  
Drive System ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Field Weakening ◽  
Control Scheme ◽  
Speed Range ◽  
Rotor Flux

Abstract In this paper, an analysis of the induction motor control scheme based on the Direct Rotor Flux Oriented Control (DRFOC) for a whole speed range, including field-weakening (FW) regions is presented. Two field-weakening algorithms have been compared and verified through simulation with a 3.0 [kW] induction motor drive.

Comparative analysis of the SRM as an alternative to the PM motor for automotive applications

2014 ◽  
Vol 33 (5) ◽  
pp. 1599-1612 ◽  
Author(s):  
K. Boynov ◽  
J.J.H. Paulides ◽  
E.A. Lomonova
Keyword(s):  
Comparative Analysis ◽  
Hybrid System ◽  
Direct Conversion ◽  
Heavy Duty ◽  
Content Type ◽  
Switched Reluctance ◽  
Copper Loss ◽  
Field Weakening ◽  
Wheel Drive ◽  
Speed Performance

Purpose – The purpose of this paper is to present comparative analysis of several configurations of the switched reluctance motor (SRM) for an in-wheel drive for a heavy-duty automotive series hybrid system. The SRM motor is regarded as one of the primary candidates for possible replacement of the permanent magnet (PM) motor. Design/methodology/approach – Three SRMs of 10/8, 12/10 and 12/8 configurations have been analysed, where the last two motors had the stator lamination profile taken from the existing PM motor. The analysis is performed using magnetostatic FEM and transient modelling techniques. Findings – The maximum developed electromagnetic torque of the two analysed motors of 12/10 and 12/8 SRM configurations with the stator lamination profile taken from the existing PM motor is limited due to saturation of the stator yoke. Both motor configurations are capable to provide the specified power within the same outer dimensions due to extended speed in the field-weakening region and position independent starting torque. A redesigned stator results in substantial increase in torque developed by the machine and, consequently, ability to provide similar torque-speed performance as the existing PM motor, at cost of increased copper loss at the low-speed regime. Originality/value – The paper proposes several structures of SRMs for the in-wheel drive for a heavy-duty automotive series hybrid system converted from the present expensive PM machine, having the same power density. The “bottleneck” of the direct conversion of the PM machine into the SRM is highlighted.

1207: Failed Pyeloplasty in Children: Comparative Analysis of Retrograde Endopyelotomy VS. Re-do Pyeloplasty

2007 ◽  
Vol 177 (4S) ◽  
pp. 398-398
Author(s):  
Luis H. Braga ◽  
Joao L. Pippi Salle ◽  
Sumit Dave ◽  
Sean Skeldon ◽  
Armando J. Lorenzo ◽  
...  
Keyword(s):  
Comparative Analysis

652: Invade or Proliferate? A Comparative Analysis of Expression of Cell Cycle Regulators in Invasive Margin and Primary Tumor Tissue in Renal Cell Cancer

2005 ◽  
Vol 173 (4S) ◽  
pp. 178-178
Author(s):  
Stephen O. Ikuerowo ◽  
Stefan A. Machtens ◽  
Markus A. Kuczyk ◽  
Udo Jonas ◽  
Juergen Serth
Keyword(s):  
Cell Cycle ◽  
Comparative Analysis ◽  
Renal Cell Cancer ◽  
Primary Tumor ◽  
Renal Cell ◽  
Tumor Tissue ◽  
Cell Cancer ◽  
Cell Cycle Regulators ◽  
Invasive Margin
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