magnet machines
Fringing in tubular permanent-magnet machines: Part II. Cogging force and its minimization
... of the ferromagnetic armature core in tubular permanent-magnet machines, are established. In Part II, the technique is applied to both slotless and slotted machines, and the results are verified by ...
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Influence of design parameters on cogging torque in permanent magnet machines
... Abstract—The influence of various design parameters on the cogging torque developed by permanent magnet machines is inves- tigated. It is shown that the slot and pole number combination has a significant ...
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A general framework for the analysis and design of tubular linear permanent magnet machines
... permanent magnet machines which embraces the topologies shown in ...the machines and provide a basis for comparative studies, design optimization, system dynamic modeling and simulations, and ...
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Analytical Modeling of Magnetic Field Distribution in Inner Rotor Brushless Magnet Segmented Surface Inset Permanent Magnet Machines
... permanent magnet surface inset machines are interested in industrial applications due to their high efficiency and power ...density. Magnet segmentation is a common technique in order to mitigate ...
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Radial force control of multi sector permanent magnet machines for vibration suppression
... electrical machines has been widely investigated for a variety of bearingless machines as well as for conventional structures featuring mechanical ...nent Magnet machine towards achieving a ...
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Analytical magnetic field analysis of Halhach magnetized permanent-magnet machines
... permanent-magnet machines with either an iron-cored or air-cored stator and/or ...the magnet thickness and the pole number exists for maximum air-gap flux density, while the back iron can enhance the ...
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Improved analytical model for predicting the magnetic field distribution in brushless permanent-magnet machines
... Abstract—A general analytical technique predicts the magnetic field distribution in brushless permanent magnet machines equipped with surface-mounted magnets. It accounts for the effects of both the magnets ...
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PWM Ripple Currents Based Turn Fault Detection for Multiphase Permanent Magnet Machines
... Abstract — Most permanent magnet machines are driven by in- verters with pulse width modulation (PWM) voltages. The cur- rents contain high frequency (HF) components which are in- versely proportional to ...
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Modular Permanent Magnet Machines with Alternate Teeth Having Tooth Tips
... magnet machines with either wound or unwound teeth with tooth ...modular machines with slot number higher than pole number to compensate for the drop in winding factor due to the flux gaps in ...
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Magnet Eddy Current Loss Reduction in Permanent Magnet Machines
... Abstract— Magnet eddy current loss is very important for any types of permanent magnet machines, especially for high-speed permanent magnet machine since it increases significantly with ...
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NOVEL TECHNIQUES FOR TORQUE RIPPLE MODELING AND MINIMIZATION IN PERMANENT MAGNET MACHINES
... (IMs) and permanent magnet (PM) machines [8]-[11]. The switched reluctance (SR) machine is a promising candidate that can be used for traction as well [8], [14], [15]. Comparative performance studies of ...
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Turn turn short circuit fault management in permanent magnet machines
... This paper presents a systematic study on turn-turn short circuit fault and ways to manage them to provide a basis for comparison of the various options available. The possible methods to reduce the likelihood of the ...
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Partitioned Topologies of Switched Flux Permanent Magnet Machines for Electric Vehicles
... Partitioned Stator (PS) and Partitioned Rotor (PR) Switched Flux Permanent Magnet (SFPM) machines have the advantages of high torque density and high torque per PM volume compared with conventional SFPM ...
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Impact of soft magnetic material on design of high speed permanent magnet machines
... Abstract—This paper investigates the effect of two soft magnetic materials on a high speed machine design, namely 6.5% Silicon Steel and Cobalt-Iron alloy. The effect of design parameters on the machine performance as an ...
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Analytical modelling of modular and unequal tooth width surface-mounted permanent magnet machines
... machine performance by increasing average torque. This means that the modular structure can exhibit previously mentioned merits such as simple manufacturing and also better electromagnetic performance. However, the ...
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High speed solid rotor permanent magnet machines: concept and design
... Table II shows a series of results obtained for various combinations of bridge thickness and magnet area. As expected the maximum stress is more sensitive to the bridge thickness than the magnet cross ...
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Influence of Rotor Magnet Shapes on Performance of Axial Flux Permanent Magnet Machines
... common magnet shaping and displacement techniques applied to cogging reduction in AFPM machines are taken for ...various magnet shapes selected for ...
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Stator iron loss of tubular permanent-magnet machines
... However, while methods of determining the iron loss in rotating PM machines have been investigated extensively, the study of iron loss in linear machines is poorly documented. This paper uses a simple ...
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Cogging torque mitigation of modular permanent magnet machines
... PM Machines For the modular PM machines, since the flux gaps cut off the flux path (main and leakage fluxes) in the stator iron core, the entire flux distribution inside the stator has been ...SPM ...
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Space vectors and pseudo inverse matrix methods for the radial force control in bearingless multi sector permanent magnet machines
... multiphase machines suitable for the radial force control is another example of this technology ...permanent magnet machine, where independent three-phase windings are located in different stator areas ...
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