منابع مشابه
A tubular linear machine with dual Halbach array
Purpose – Force output is extremely important for electromagnetic linear machines. The purpose of this study is to explore new permanent magnet (PM) array and winding patterns to increase the magnetic flux density and thus to improve the force output of electromagnetic tubular linear machines. Design/methodology/approach – Based on investigations on various PM patterns, a novel dual Halbach PM ...
متن کاملMagnetic Field of Tubular Linear Machines with Dual Halbach Array
Permanent magnet (PM) array affects flux field distribution of electromagnetic linear machines significantly. A novel dual Halbach array is proposed in this paper to enhance flux density in air gap, and thus to improve output performance of linear machines. Magnetic field in three-dimensional (3D) space of a tubular linear machine with dual Halbach array is formulated based on Laplace’s and Poi...
متن کاملElectromagnetic Vibration Energy Harvesting Using an Improved Halbach Array
This paper reports an electromagnetic vibration energy harvester using an improved Halbach array. A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the array while cancelling the field on the other side to almost zero. Previous research showed that although the Halbach array has higher magnetic field density compared to normal mag...
متن کاملDesign Methodology of a Dual-Halbach Array Linear Actuator with Thermal-Electromagnetic Coupling
This paper proposes a design methodology for linear actuators, considering thermal and electromagnetic coupling with geometrical and temperature constraints, that maximizes force density and minimizes force ripple. The method allows defining an actuator for given specifications in a step-by-step way so that requirements are met and the temperature within the device is maintained under or equal ...
متن کاملModeling and Design Optimization of Permanent Magnet Linear Synchronous Motor with Halbach Array
In this paper, an analytical analysis is presented to calculate air gap flux density distribution, thrust and efficiency in air-core permanent magnet linear synchronous motor with Halbach array based on Maxwell equations. In order to improve mean thrust, thrust ripple, magnet and copper consumption, the main design parameters of analyzed machine are optimized by using genetic algorithm in an ap...
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ژورنال
عنوان ژورنال: Journal of Magnetism and Magnetic Materials
سال: 2012
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2012.02.014