Results 171 to 180 of about 80,128 (213)

Design and Investigation of Flux Weakening Capability in Variable Flux Reluctance Machine

2016 IEEE Vehicle Power and Propulsion Conference (VPPC), 2016
This paper presents the design of a variable flux reluctance machine (VFRM), which has both DC field and AC armature windings in stator, for high speed application. The method to calculate the torque-speed characteristics of the VFRM with both optimized DC field current and d-axis current is developed in this paper.
X. Liu, Z. Q. Zhu
openaire   +1 more source

Flux-weakening control of PMSM considering inverter nonlinearity

Proceedings of The 7th International Power Electronics and Motion Control Conference, 2012
This paper proposes an improved flux-weakening operation for PMSM considering inverter nonlinearity. For the flux-weakening operation, full utilization of an available voltage applied to a motor is very important. One of critical information for the flux-weakening control is an actual motor input voltage, which is commonly replaced by a command voltage.
null Sang-Hoon Kim, null In-Bum Seo, null Nae-Chun Park   +2 more
openaire   +1 more source

Flux distortion and iron losses in flux-weakened permanent magnet synchronous motor

Journal of Magnetism and Magnetic Materials, 2000
Abstract The iron losses were determined by using modelled properties of used electrical steel and calculated flux distribution in the core of the four-pole permanent magnet synchronous motor, working in the flux-weakening regime. The distribution of the magnetic induction B (t) in all parts of the motor was obtained by the numerical ...
B Štumberger, B Hribernik, V Goričan
openaire   +1 more source

A new adaptive flux weakening method of PMSM

2011 International Conference on Electrical Machines and Systems, 2011
In this paper, an adaptive flux weakening method for PMSM is proposed. The demagnetization current can be obtained by an adaptive PI regulator according to the reference voltage output by the current loop controller and the voltage limitation of the inverter. This method can reduce the dependency on motor parameters and improve the robust and precision
Zedong Zheng, Yongdong Li, Kui Wang, Lin Qiu   +3 more
openaire   +1 more source

The use of soft magnetic materials for improving flux weakening capabilities of axial flux PM machines

Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), 2002
Use of axial flux machines (AFPMs) is studied in order to obtain a given value of the phase inductance, so as to use flux-weakening techniques. Slotted machines are considered, where the locking bars are made by innovative sinterized magnetic materials.
A. DI NAPOLI, HONORATI, Onorato, SANTINI, Ezio, L. SOLERO   +3 more
openaire   +2 more sources

A Winding-Switching Concept for Flux Weakening in Consequent Magnet Pole Switched Flux Memory Machine

IEEE Transactions on Magnetics, 2015
Memory motors [1] [2] equipped with either single low-coercive force (LCF) or hybrid magnets have been extensively investigated due to the elimination of the associated excitation loss during the flux adjustment. Thus, they enable high efficiency operation within a wide range of speeds and loads.
H. Yang, H. Lin, Z. Zhu, S. Fang, Y. Huang   +4 more
openaire   +1 more source

Design and Control of an Axial Flux Machine for a Wide Flux-Weakening Operation Region

2007 IEEE Industry Applications Annual Meeting, 2007
This paper describes the strategy to design and control of an axial flux SPM machine for achieving a wide flux-weakening operating region. By using a slotted stator with fractional slot windings and additional cores enclosing end windings, the axial flux machine satisfies the specification of a wide constant power speed range.
KWON TS, SUL SK, ALBERTI, LUIGI, BIANCHI, NICOLA   +3 more
openaire   +1 more source

Flux-weakening performance of series permanent magnet memory machine

2017 20th International Conference on Electrical Machines and Systems (ICEMS), 2017
This paper presents the theoretical analysis of flux-weakening performance of series permanent magnet (SPM) memory machine. A modified circle diagram is proposed to graphically illustrate the maximum torque per voltage (MTPV) flux-weakening control strategy for the memory machine.
Nian Li, Jianguo Zhu, Mingyao Lin, Gongde Yang, Yong Kong   +4 more
openaire   +1 more source

Closed-loop flux-weakening for permanent magnet synchronous motors

4th IET International Conference on Power Electronics, Machines and Drives (PEMD 2008), 2008
This paper presents a simple robust integrator-like flux-weakening regulator for permanent magnet synchronous machines, based on a general closed-loop flux-weakening which uses a reference stator voltage and DC link voltage feedback. Also, some of the open-loop flux-weakening schemes covering constant torque and power regions are briefly discussed and ...
V.R. Jevremovic, D.P. Marcetic
openaire   +1 more source

Flux weakening control of IPMSM used for xEV traction

2015 IEEE 11th International Conference on Power Electronics and Drive Systems, 2015
This paper analyzes the practical operation limits of an IPMSM and proposes a speed control strategy which is suitable for real engineering implementation. Given a specific IPMSM which is used for low-speed EV traction, operation limits are pre-calculated according to motor parameters. Subsequently, a speed control strategy is implemented.
Qian Weizhe, Chen Qi
openaire   +1 more source