Nonlinear Adaptive Lumped Parameter Magnetic Circuit Analysis for Spoke-Type Fault-Tolerant Permanent-Magnet Motors

The rotor of claw-pole permanent magnet generator is constructed by two flangeHs with claw and a ringH of Nd-Fe-B permanent magnet magnetized axially,H axial fluxH is transformedH effectiveH radial fluxH, the polarityH of adjacent claw-poles is opposite, N poles and S poles array alternately. Based on design theory of permanent magnet generator, major parametersH of generator is determineHd. Using equivalent magnetic circuit method, the magnetic path of generator is analyzed, permeance and flux are calculated, thus the claw-pole permanent magnet generator is designed, it possesses high reliability, simple processH and effective voltage-stabilized characteristic.

Download Full-text

Magnetic circuit analysis of permanent-magnet-assisted salient-pole synchronous machines under steady states

2011 IEEE International Electric Machines & Drives Conference (IEMDC) ◽

10.1109/iemdc.2011.5994638 ◽

2011 ◽

Author(s):

Tatsuya Hosoi ◽

Kazuo Shima ◽

Tadashi Fukami

Keyword(s):

Permanent Magnet ◽

Magnetic Circuit ◽

Steady States ◽

Circuit Analysis ◽

Synchronous Machines ◽

Salient Pole

Download Full-text

Magnetic Field Analysis of Surface-Mounted Permanent-Magnet Motors

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.52-54.285 ◽

2011 ◽

Vol 52-54 ◽

pp. 285-290

Author(s):

Yi Chang Wu ◽

Feng Ming Ou ◽

Bo Wei Lin

Keyword(s):

Magnetic Field ◽

Permanent Magnet ◽

Magnetic Circuit ◽

Circuit Model ◽

Field Analysis ◽

Permanent Magnet Motors ◽

Element Analysis ◽

Magnetic Field Analysis ◽

Field Estimation ◽

The Magnetic Field

The prediction of the magnetic field is a prerequisite to investigate the motor performance. This paper focuses on the magnetic field estimation of surface-mounted permanent-magnet (SMPM) motors based on two approximations, i.e., the magnetic circuit analysis and the finite-element analysis (FEA). An equivalent magnetic circuit model is applied to analytically evaluate the magnetic field of a SMPM motor with exterior-rotor configuration. The two-dimensional FEA is then applied to numerically calculate the magnetic field and to verify the validity of the magnetic circuit model. The results show that the errors between the analytical predictions and FEA results are less than 6%. It is of benefit to further design purposes and optimization of SMPM motors.

Download Full-text

Analytical design of a high-torque flux-switching permanent magnet machine by a simplified lumped parameter magnetic circuit model

The XIX International Conference on Electrical Machines - ICEM 2010 ◽

10.1109/icelmach.2010.5607710 ◽

2010 ◽

Cited By ~ 7

Author(s):

Anyuan Chen ◽

Robert Nilssen ◽

Arne Nysveen

Keyword(s):

Permanent Magnet ◽

Magnetic Circuit ◽

Circuit Model ◽

Permanent Magnet Machine ◽

Analytical Design ◽

Lumped Parameter ◽

High Torque

Download Full-text

Improved SVPWM Fault-Tolerant Control Strategy for Five-Phase Permanent-Magnet Motor

Energies ◽

10.3390/en12244626 ◽

2019 ◽

Vol 12 (24) ◽

pp. 4626 ◽

Cited By ~ 2

Author(s):

Liang Xu ◽

Wenxiang Zhao ◽

Guohai Liu

Keyword(s):

Permanent Magnet ◽

Control Strategy ◽

Pulse Width Modulation ◽

High Efficiency ◽

Fault Tolerant ◽

Control Strategies ◽

Fault Tolerant Control ◽

Open Circuit ◽

Permanent Magnet Motors ◽

Permanent Magnet Motor

Multiphase permanent-magnet motors have received a lot of attention in the past few years owing to the merits of high power density, high efficiency and high fault-tolerant capability. Particularly, high fault tolerance is very desirable for safety-critical applications. This paper proposes an improved space vector pulse-width modulation (SVPWM) fault-tolerant control for five-phase permanent-magnet motors. First, generalized five-phase SVPWM fault-tolerant control is deduced and analyzed based on single-phase open-circuit fault, thus obtaining various SVPWM fault-tolerant control strategies and yielding a greatly increased capacity to enhance fault-tolerant performance of motor. Then, an improved SVPWM fault-tolerant control strategy with increased DC bus voltage utilization and reduced current harmonics is proposed and compared with the traditional one. Last, effectiveness and superiority of the proposed control strategy is verified by both simulation and experimental results on a five-phase permanent-magnet motor.

Download Full-text