Generator magnet permanen (GMP) secara luas digunakan dalam produksi energi terbarukan karena persyaratan perawatan yang minimal dan efisiensi yang tinggi. Namun, torsi cogging yang timbul akibat interaksi antara kutub magnet rotor dan slot stator tetap menjadi masalah signifikan yang dapat mengganggu kualitas torsi keluaran dan stabilitas mekanis sistem. Tujuan penelitian ini adalah untuk mengevaluasi dampak teknik pembentukan tepi magnetik dan variasi lebar slot inti stator terhadap pengurangan torsi cogging pada PMSG dengan konfigurasi 28 kutub rotor dan 24 slot stator. Untuk memverifikasi distribusi fluks magnetik dan pola torsi cogging, simulasi menggunakan Metode Elemen Hingga Magnetik (FEMM) diterapkan. Tiga varian lebar slot (2 mm, 3 mm, dan 4 mm) dievaluasi dalam dua skenario tanpa dan dengan pembentukan tepi magnetik. Hasil simulasi menunjukkan bahwa lebar slot 3 mm dikombinasikan dengan pembentukan tepi magnetik mencapai pengurangan torsi cogging paling signifikan, yaitu 98,56% dibandingkan desain asli. Metode ini terbukti efektif dalam mengurangi osilasi torsi dan menstabilkan distribusi fluks magnetik tanpa mengorbankan kinerja elektromagnetik. Penelitian ini unik karena secara cermat menganalisis bagaimana bentuk slot stator dan tepi magnetik rotor bekerja bersama secara bersamaan dalam konfigurasi 24 alur 28 kutub, topik yang belum banyak dibahas sebelumnya

Permanent magnet generators (PMG) are extensively employed in the production of renewable energy due to their minimal maintenance requirements and high efficiency. However, the cogging torque that results from the interaction between the magnetic poles of the rotor and the slot of the stator remains a significant issue that can compromise the quality of the output torque and the mechanical stability of the system. The objective of this investigation is to evaluate the impact of magnetic edge shaping technique and stator core slot width variation on the reduction of cogging torque in PMSGs with a configuration of 28 rotor poles and 24 stator slots. In order to verify the distribution of the magnetic flux and the pattern of cogging torque, a simulation utilising the Finite Element Method Magnetics (FEMM) is implemented. Three variants of slot width (2 mm, 3 mm, and 4 mm) were evaluated under both scenarios of absent and existing magnetic edge creation. The simulation results indicated that a slot width of 3 mm combined with magnetic edge generation achieved the most significant reduction in cogging torque, measuring 98.56% relative to the original design. This methodology demonstrated its efficacy in reducing the torque oscillation and stabilising the magnetic flux distribution without sacrificing electromagnetic performance. This research is unique because it carefully examines how the shape of the stator slots and the rotor's magnetic edges work together at the same time in the 24 Slot 28P pole, a topic that hasn't been widely covered before.