Abstract
Double sided linear flux switching permanent magnet machines (DSLFSPMMs) exhibit high thrust force density, high efficiency, low cost and robust double salient secondary (stator) structures. The aforementioned unique features make DSLFSPMM suitable for long stroke applications. However, distorted flux linkage waveforms and high detent forces can exaggerate thrust force ripples and reduce their applicability in many areas. In order to enhance thrust force performance, reduce thrust force ripple ratio and total harmonic distortion (THD) of no-load flux linkages, two structure-based advancements are introduced in this work, i.e., asynchronous mover slot and stator tooth displacement technique (AMSSTDT) and the addition of an active permanent magnet end slot (APMES). Furthermore, single variable geometric optimization (SVGO) is carried out by the finite element method (FEM).
Highlights
Rotary machines used for translational motion exhibit low efficiency and high cost due to requirement of sophisticated gear systems for the conversion of rotational torques into linear thrust forces
linear permanent magnet synchronous machine (LPMSM) shows the merit of high flux density, linear induction machine (LIM) exhibits advantage of low cost when compared with linear permanent magnet (PM) machines, linear direct current machine (LDCM) requires simple speed control, and linear switched reluctance machine (LSRM) has the advantage of a robust stator structure
HEDSLFSMs is very limited, a genetic algorithm (GA) optimization approach is in to reduce the thrust force ripple ratio while maintaining the average thrust force of a utilized in [31] to reduce the thrust force ripple ratio while maintaining the average thrust force of a Numerous advanced optimization techniques utilized for electricutilized machines presented in [32]. are Numerous advanced optimization techniques forareelectric machines
Summary
Rotary machines used for translational motion exhibit low efficiency and high cost due to requirement of sophisticated gear systems for the conversion of rotational torques into linear thrust forces. LPMSM shows the merit of high flux density, LIM exhibits advantage of low cost when compared with linear permanent magnet (PM) machines, LDCM requires simple speed control, and LSRM has the advantage of a robust stator structure. Depending upon the excitation source, DSLFSMs can be divided into: (a) double sided linear flux permanent magnet machines [20], (b) field. LFSM is performed in [24]isand the authors claim advantage of a low force of ratio for stator and double mover LFSM performed in [24]. Analysis and design of a with thrust force ratio for the DSLFSM structure with moving primary (mover). Utilized in [31] to reduce the thrust force ripple ratio while maintaining the average thrust force of a Numerous advanced optimization techniques utilized for electricutilized machines presented in [32]. 3 of 3 of alteration introduced in our modified DSLFSPMM design to effectively curtail the asymmetric no-load curtail the asymmetric no-load flux distribution problem, illustrated
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