Conference Paper

Linear generator: design and simulation

Dept. of Electr. Eng., Malaya Univ., Kuala Lumpur, Malaysia
DOI: 10.1109/PECON.2003.1437463 Conference: Power Engineering Conference, 2003. PECon 2003. Proceedings. National
Source: IEEE Xplore

ABSTRACT A six-slot tubular permanent magnet linear generator is designed, simulated, fabricated and tested. The finite element method is used in calculation and simulation to get the accurate results. Optimization of the translator length is carried out to achieve the minimum cogging force. Tests are conducted to confirm the simulation results. Better performance is achieved in the proposed improved generator prototype.

  • [Show abstract] [Hide abstract]
    ABSTRACT: In recent years linear generators have been proposed in several marine applications as a well-suited technology for power generation such as power buoys. Those kinds of buoys could be used as large-scale devices in power plants and as small-size devices in electronic supply as well. In this work a three phase tubular permanent magnet linear generator is analyzed to supply electronic devices such as sensorial buoys with energy scavenging. A soft-computing algorithm based on a finite element method has been developed and a parametric approach is presented in order to provide a first optimization for electronic applications. Numerical results have been reported and discussed in detail.
    Power Engineering, Energy and Electrical Drives, 2009. POWERENG '09. International Conference on; 04/2009
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Although linear permanent-magnet generators (LPMGs) are widely used for converting wave energy into electrical energy, they suffer from large cogging force. The cogging force causes oscillatory output power, which shortens lifetime and increases the maintenance costs of the generators. To reduce this force in the generator, we have designed and simulated a three-phase LPMG for direct wave energy conversion and predicted its performance using the finite-element method. We studied the influence of different design parameters on the cogging force and minimized this force by varying the proposed parameters. The results obtained confirm a large reduction in the cogging force and an enhancement in the generator performance.
    IEEE Transactions on Magnetics 02/2010; · 1.42 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In this paper a three-phase linear permanent magnet generator is designed for direct waves energy conversion. Its performance is then simulated using analytical and finite element method. Cogging force in this generator causes the oscillatory output power, shortens life time and increases the maintenance cost of the generator. Effects of design parameters including permanent magnet (PM) length, skewed stator teeth, radial PMs and use of stator semi-closed and open-slot on cogging force are investigated and results of simulations presented. The attempt is made to minimize this force by varying the above-mentioned design parameters. The reduction of cogging force includes: 80% by PM length reduction, 90% by a proper skewing angle and 34% by using semi-closed slots are shown.