نتایج جستجو برای: permanent magnet guideway

تعداد نتایج: 74299  

2009
C. Grabner J. V. Gragger H. Kapeller A. Haumer C. Kral

The development procedure of permanent magnet drives for sensor less operation beginning from standstill under overload conditions has to consider different design aspects coevally. First, the robust rotor position sensing by test signal enforces a design with a strongly different behavior of the spatial dq-oriented differential inductance values. Therefore, the interior rotor magnet array arra...

2015
M Santosh Kumar M Krishna Alekh Ranjan Manisha Dubey

The purpose of this design is to improve the efficiency of power extraction from sea waves. Sea waves are huge untapped energy resources. There are many methods to generate electricity from power of sea waves. But, all these conventional methods use mechanics, which have a lesser efficiency than electrical systems. A new design of permanent magnet linear generator is proposed which moves with t...

2001
A. Parviainen J. Pyrhönen M. Niemelä

A new permanent magnet design for axial flux interior permanent magnet (AFIPM) motor is described in this paper. Poleshoes are traditionally used to produce sinusoidal flux linkage and sinusoidal EMF especially in the case of radial flux synchronous machines. Poleshoes are not a practical solution in the case of axial flux PM machine. The use of poleshoes in the production of sinusoidal back EM...

2015
Guangxin Wang Huantong Xie Shulian Hou Wei Chen Qiang Zhao Shiyu Li

By improving the main magnet, gradient, and RF coils design technology, manufacturing methods, and inventing new magnetic resonance imaging (MRI) special alloy, a cost-effective and small animal specific permanent magnet-type three-dimensional magnetic resonance imager was developed. The main magnetic field strength of magnetic resonance imager with independent intellectual property rights is 1...

Journal: :IEEE Transactions on Magnetics 2017

Journal: :Physical Review Special Topics - Accelerators and Beams 2011

2016
Michael W Vogel Andrea Giorni Viktor Vegh Ruben Pellicer-Guridi David C Reutens

OBJECT We studied the feasibility of generating the variable magnetic fields required for ultra-low field nuclear magnetic resonance relaxometry with dynamically adjustable permanent magnets. Our motivation was to substitute traditional electromagnets by distributed permanent magnets, increasing system portability. MATERIALS AND METHODS The finite element method (COMSOL®) was employed for the...

Journal: :IEEE Transactions on Magnetics 1994

Journal: :IEEE Transactions on Plasma Science 2011

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