Sensorless control of permanent magnet synchronous motor based on adaptive back-EMF observer
Advances in Mechanical Engineering, 2023 Aiming at the problem that the change of motor parameters in actual operation will significantly reduce the control accuracy of the motor, this paper proposes a sensorless control method of permanent magnet synchronous motor based on an adaptive back-EMF
Xiangang Cao +4 more
doaj +1 more source
Magnetic nanowires as permanent magnet materials
, 2007 We present the fabrication of metallic magnetic nanowires using a low temperature chemical process. We show that pressed powders and magnetically oriented samples exhibit a very high coercivity (6.5 kOe at 140 K and 4.8 kOe at 300 K).
Craik D. J. +6 more
core +1 more source
High speed operation design considerations for fractional slot axial flux PMSM [PDF]
, 2015 This paper discusses intensively the design considerations for the fractional slot axial flux permanent magnet synchronous (AFPMSMs) in order to work efficiently in the constant power speed range, also known as the field weakening (FW) region.
Hemeida, Ahmed +2 more
core +2 more sources
Miniature cyclotron resonance ion source using small permanent magnet [PDF]
, 1980 An ion source using the cyclotron resonance principle is described. A miniaturized ion source device is used in an air gap of a small permanent magnet with a substantially uniform field in the air gap of about 0.5 inch.
Anicich, V. G., Huntress, W. T., Jr.
core +1 more source
Direct Flux Field Oriented Control of IPM Drives with Variable DC-Link in the Field-Weakening Region [PDF]
, 2009 This paper presents the direct flux control of an interior permanent-magnet (IPM) motor drive in the field-weakening region. The output torque is regulated by the coordinated control of the stator flux amplitude and the current component in quadrature ...
Armando, Eric Giacomo +2 more
core +1 more source
Simulation Analysis of Magnetic Characteristic of Double Permanent Magnet Wheel Linear Drive Device
Jixie chuandong, 2020 The non-contact permanent magnet force linear driving device of double permanent magnet wheel is a magnetic driving device for long-distance linear transmission by means of permanent magnet force.
Sun Feng +6 more
doaj
Permanent Magnets Aging in Variable Flux Permanent Magnet Synchronous Machines [PDF]
IEEE Transactions on Industry Applications, 2018 IEEE Energy Conversion Congress and Exposition (ECCE) (2018, Portland)
Daniel Fernandez +5 more
openaire +4 more sources
Calculating the interior permanent-magnet motor [PDF]
, 2003 This paper describes the calculation of torque in a brushless permanent-magnet line-start AC motor by means of the flux-MMF diagram in combination with the finite-element method.
Cossar, C. +4 more
core
Prediction of a new efficient permanent magnet SmCoNiFe3
, 2017 We propose a new efficient permanent magnet, SmCoNiFe3, that is a breakthrough development of the well-known SmCo5 prototype. More modern neodymium magnets of the Nd-Fe-B type have an advantage over SmCo5 because of their greater maximum energy products ...
Antropov, V. P. +9 more
core +1 more source
General Analytical Model of Magnet Average Eddy-Current Volume Losses for Comparison of Multi-phase PM Machines with Concentrated Winding [PDF]
, 2014 this paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated.
ASLAN, Bassel +2 more
core +6 more sources