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The 1.5MW half-direct permanent magnet synchronous wind generator with 252 slots, 32 poles is investigated in this paper, and two kinds of generator designs according to permanent magnet embedded in different rotor positions are presented. Based on the fluid mechanics theory, the mathematical models of 3D fluid field that fluid flowing through the outer-surfaces of generators are established, and...
The 1.5MW half-direct permanent magnet synchronous wind generator with 252 slots, 32 poles is investigated in this paper, and two kinds of generator designs according to permanent magnet embedded in different rotor positions are presented. Based on the fluid mechanics theory, the mathematical models of 3D fluid field that fluid flowing through the outer-surfaces of generators are established, and...
This paper presents the simulation results of a Surface Mounted Permanent Magnet Synchronous Generator (SMPMSG) for varying rotor diameter and stator core lengths. Samarium cobalt magnet is used for the rotor. The simulation of the SMPMSG was done using the software package Infolitica/Magnet.
In the perspective of the fossil fuels deposits depletion new energy resources must be developed; amongst them the renewable energy sector seems to be able to provide a long term solution. Besides the already popular wind, solar or thermal energies, the ocean energy sector offers a virtually infinite energy potential; many solutions for harvesting and converting this energy into usable form are under...
The controller for Archimedes wave swing (AWS) based wave energy conversion (WEC) system is designed in this paper. Based on the model of the AWS based WEC system in the d-q frame of reference, the control strategy of the WEC system under the irregular wave is derived. The AWS based WEC is regulated to be in resonance with the wave by the stiffness control of the linear permanent magnet generator,...
This paper presents the design procedure and modeling methodology for a four sided floating type of linear permanent magnet generator used in sea wave energy extraction applications. The hydraulic system of wave generation with buoy has been developed. Appropriate coupled magnetic-electric-mechanical models for the analysis of the linear permanent magnet (LPM) generator is researched with finite element...
This paper presents characteristic analysis of a without permanent magnet Brushless dc (WPMBLDC) generator. Proposed configuration is a 9/6 BLDC generator in which permanent magnet is replaced with assisted field coil in the rotor. Due to dc current in the assistant field winding, the magnetic field flows axially through the rotor shaft and closes through the stator teeth and the motor housing. Finite...
Escalating worldwide concerns over energy consumption and pollution due to transportation systems have increased the importance of optimizing hybrid electric vehicles (HEV). In series HEVs, which contain hybrid permanent magnet (HPM) instead of conventional brushless permanent magnet generator, the optimum operating region of the internal combustion engine (ICE) in terms of fuel consumption and emission...
This paper analyses the stator teeth geometry effects on cogging force of permanent magnet linear generators. The method making translator adjacent sides' permanent magnet allotropic is proposed to minimize the cogging force of four sided permanent magnet linear generators. The dynamic modeling of the generator's performance is based on finite element method. The generator is coupled to a particular...
Traditional electric machine design requiring the balancing of the phases both in phase voltage magnitudes and the angles between adjacent phases informs that the number of stator slots per phase must be an integer. There are situations however, where it is cheaper to use existing laminations for designs with non-integer number of slots per phase to build generators for specialized applications especially...
Permanent magnet generators used in hybrid vehicles primarily provide the equipments in the hybrid cars with the DC power and charge the batteries. The generator rotor is composed of the rotor core and the multi-block Nd-Fe-B permanent magnet fixed on the rotor core. The polar of the adjacent Nd-Fe-B permanent magnet is opposite, in another words, N polarity and S polarity are arrayed alternately...
In the present study, a novel small permanent magnet generator is proposed. Various characteristics are analyzed using the FEM. A suitable structure for high power and low cogging torque is investigated. Low-cogging-torque characteristics can be achieved by optimization of the auxiliary pole shape. The proposed generator is a low cogging torque generator that operates at low speeds and so is expected...
In a permanent magnet machine cogging torque is produced due to the interaction between the rotor magnets and the slots and teeth of the stator. This paper is a result of an ongoing research work that deals with reduction of cogging torque in dual-rotor radial flux permanent magnet generator (DRFPMG) for direct coupled stand-alone wind energy systems. The DRFPMG is an existing machine design. Two...
The paper presents numerical and experimental results of a 1.6 KW and 3 kW wind generators with permanent magnet claw poles. A 3D model based on finite element method (FEM) considering the nonlinearity of the magnetic circuit and the movement of armatures was used to calculate the generator's characteristics at load and no-load. Experimental tests were conducted in order to validate the numerically...
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