Analisis Perubahan Jumlah Slot pada Permanent Magnet Synchronous Generator (PMSG) untuk Mencapai Nilai Optimal Back EMF dan KE Berbasis Finite Element Method (FEM)

[Title: Analysis of Changes in Number of Slots on Permanent Magnet Synchronous Generator (PMSG) to Achieving Optimal Value of Back EMF and KE Based on Finite Element Method (FEM)] Generators can produce electricity under three conditions: a magnetic field, a coil, and a change in flux passing through the coil. The place to put the coil on the generator is called a slot. The number of slots can affect the characteristics of the generator. Changes in the number of slots affect Back EMF and KE. The simulation uses coiled wire with a diameter of 1 mm. PMSG 12s10p was designed in this research, and the slots were varied into 15s10p. The PMSG 12s10p has 12 slots with 188 coils, and the 15s10p has 15 slots with 158 coils. The simulation results show that the average DC voltage on PMSG 12s10p, and 15s10p is 256,138 V, and 277,340 V, respectively. Electrical constant (KE), the KE value for each PMSG variation is 2.53 (PMSG 12s10p), and 2.64 (PMSG 15s10p). Changes in the number of coils of each slot result in a change in the amount of magnetic flux produced. Magnetic flux is part of the flux linkage that produces an induced voltage to determine the Back EMF and KE values. With fixed PMSG dimensions, the variation in the number of slots that produces the most optimal back EMF and KE values is PMSG 15s10p. The optimal value of back EMF and KE results in a larger generator output voltage.