Abstract
In this paper, a modification of the dual-segment permanent magnet (PM) Halbach array is investigated to improve the performance of the tubular linear machine, in terms of flux density and output power. Instead of a classical Halbach array with only radial and axial PMs, the proposed model involves the insertion of mig-magnets, which have a magnetized angle shifted from the reference magnetized angles of axial and radial PMs. This structure leads to the elimination of flux leakage and the concentration of flux linkage in middle of the coil; therefore, the output power is increased by 13.2%.
Highlights
Tubular machines are commonly applied in many industrial applications, such as cryocoolers, linear compressors, or refrigerators [1,2,3]
Recent research activities for energy harvesting in vehicle suspension systems [4,5,6] or using ocean wave energy [7,8,9] have proposed a new trend for tubular machines
A tubular permanent magnet machine composed of a novel magnet arrangement is Inthis thispaper, paper,aatubular tubularpermanent permanentmagnet magnetmachine machinecomposed composedof ofaanovel novelmagnet magnet arrangement
Summary
Tubular machines are commonly applied in many industrial applications, such as cryocoolers, linear compressors, or refrigerators [1,2,3]. The effects of both the even- and odd-segment PM the tubular generator are investigated and compared with the conventional one. In previous publications, these effects have mostly been investigated for rotating machine. Electrical components including a magnetic core, winding, and permanent magnet (FEA) results show thata under the same operating conditions, a tubular generator using segment(PM) are attached to the inner and outer frame of the mechanical shock absorber. To validate with magnet yields has higher power than that of a generator with the original Halbach array structure by the corresponding experiments, a single PM layer, with a coreless model, is designed, fabricated and. Finite element analysis (FEA) results show thata under the same operating conditions, a tubular
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