Search results for "Ironless Electrical Machine"

showing 3 items of 3 documents

A new solution for the sea wave exploitation. A linear ironless generator

2019

The exploitation of sea wave represents an important frontier for the energy sustainability in the next future. Despite the proposal of several techniques and solutions, commercial devices are not available. In this context, the Department of Engineering is investigating an innovative solution based on linear energy generators. This machine can be adopted as the main component in a wave energy converter, that is the device for the energy extraction of sea wave. Starting from an existing prototype, the paper examines the replacement of the iron stator with a non-magnetic material, in order to solve several common problems of linear generators, such as the cogging force. Results are reported,…

Linear GeneratorEnergy converterStatorComputer science020209 energy020208 electrical & electronic engineeringMechanical engineeringContext (language use)02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPoint Absorberslaw.inventionGenerator (circuit theory)Settore ING-INF/04 - AutomaticalawIronless Electrical MachineComponent (UML)Linear congruential generator0202 electrical engineering electronic engineering information engineeringSea waveEnergy (signal processing)Voltage
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An Experimental Comparison between an Ironless and a Traditional Permanent Magnet Linear Generator for Wave Energy Conversion

2022

Permanent Magnet Linear Generators (PMLGs) are currently being studied for sea wave energy harvesting. Typically, a PMLG consists of an iron-made armature and a moving translator. The permanent magnets adoption produces parasitic effects, such as cogging force, and the machine weight increment. A solution could be the adoption of an ironless configuration, accepting a power density reduction. This paper investigates the use of ironless PMLGs in sea wave energy conversion systems by an experimental comparative analysis between an iron PMLG prototype and an ironless PMLG prototype, which share the same geometry. The main electrical and mechanical parameters (resistance, mass, and magnetic fie…

Settore ING-IND/11 - Fisica Tecnica AmbientaleControl and OptimizationRenewable Energy Sustainability and the EnvironmentEnergy Engineering and Power Technologyironless electrical machines linear electrical machines permanent magnet generators (PMG) Permanent Magnet Linear Generators (PMLG)Settore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciElectrical and Electronic Engineeringlinear electrical machines; ironless electrical machines; permanent magnet generators (PMG); Permanent Magnet Linear Generators (PMLG)Engineering (miscellaneous)Energy (miscellaneous)Energies
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Reduction of cogging force in linear generators for wave energy harvesting

2022

Due to huge energy potential of sea waves, many technologies have been proposed in the last few years. Some concepts have been developed and sometimes also tested in the open sea. Some prototypes use linear generators to directly convert the vertical motion of buoys into electrical energy. This solution minimizes the numbers of energy conversion steps, increasing the energy efficiency. At the same time, the limited numbers of components could also increase the reliability of the wave energy converter. For this reason, the development of linear generators is considered with great interest. This paper investigated the cogging force, a magnetic force due to the interaction between the magnets …

Settore ING-IND/11 - Fisica Tecnica AmbientaleSea wave linear generator point absorbers ironless electrical machine reduction of cogging forceSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciOCEANS 2022, Hampton Roads
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