Helisel yapılı anahtarlamalı relüktans motorun (HY-ARM) bilgisayar destekli 3 boyutlu statik manyetik analizi

Bu çalışmada, geleneksel Anahtarlamalı Relüktans Motorunun (ARM) rotor ve statorunun ikisine birden helisel yapı (HY) verilmiştir. Burada rotorun kendisi bir doğrudan tahrik uygulamasında eyleyici görevi yapmaktadır. HY-ARM’nin analitik ve sonlu elemanlar metodu (Ansoft Maxwell 3D) ile tahmin edilen tasarımından elde edilen indüktans, verim, rotor üzerine etkiyen kuvvetler, statoru ovalleştirici kuvvetler ve üretilen torklar gibi elektriksel ve manyetik büyüklükleri aynı ölçüdeki rotor ve statoru düz geleneksel ARM ile karşılaştırılmıştır. Düz ARM için geliştirilmiş geleneksel bazı eşitlikler helisellik dikkate alınarak yeniden düzenlenmiştir. HY- ARM’de akustik gürültüye neden olan statoru ovalleştirici kuvvetler bir avantaj olarak azalırken, helisel yapının verimi bir sakınca olarak düşmektedir. Örneğin, 15 A’lik faz uyartımında statoru ovalleştirmeye çalışan ve akustik gürültüye neden olan kuvvetin genliği, Fx düz ARM’de 4017 N iken β h = 45° ’lik HY-ARM’de 3647 Ndeğerine düşmüş ve ayrıca 2 kW’lık bir düz ARM’nin verimi %94 iken β h = 45° ’lik bir HY-ARM’de verim %88’e düşmüştür. Rotorun kendisinin özellikle bir eyleyici olduğu doğrudan tahrik uygulamasında (tasarım üzerinde AR-GE çalışmaları devam ederken) HY-ARM ayrıca bir sürücü motorun, kaplinlerin ve devir ayarlama elemanlarının kullanılmaması üstünlüğü ile cazip bir seçim olarak gözükmektedir.

Computer aided three dimensional magnetostatic analysis of helically structured switched reluctance motor (HS-SRM)

In this study, both rotor and stator of traditional Switched Reluctance Motor (SRM) have been helically structured (HS). Here, the rotor itself is the actuator of a direct drive application. Electrical and magnetic quantities like inductance, efficiency, forces acting on the rotor, ovalising forces acting on the stator and generated torques of the HS-SRM obtained from analytical and predicted by finite element method (Ansoft Maxwell 3D) have been compared to the traditional straight rotor and stator SRM with same size. The traditional equations developed for the straight SRM have been modified by considering the helicity. While the ovalising forces causing acoustic noise in HS-SRM have been reduced as an advantage, the efficiency of the helical structure has been reduced as an disadvantage. For example, the magnitude of the force, Fx tending to ovalise the stator and causing noise has reduced from 4017 N for straight SRM to 3647 N for β h = 45° HS-SRM with 15 β h = 45° A phase excitation and also 2 kW straight SRM has 94% efficiency, while the HS-SRM with has a reduced efficiency of 88%. Where the rotor itself is considered as a direct drive actuator application (while R-D works on the design are being carried on), HS-SRM looks an attractive choice with a superiority of eliminating a separate driver motor, couplings and gear boxes.

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