Permanent magnet structure optimization for cogging torque reduction of outer rotor type radial flux permanent magnet generator

2017 ◽  
Author(s):  
Jin-Hyung Yoo ◽  
Chang-Seok Park ◽  
Tae-Uk Jung
Keyword(s):  
Permanent Magnet ◽  
Structure Optimization ◽  
Cogging Torque ◽  
Radial Flux ◽  
Outer Rotor ◽  
Rotor Type ◽  
Permanent Magnet Generator

scholarly journals Studi Desain Generator Magnet Permanen Fluks Radial pada Pembangkit Listrik Tenaga Angin Kecepatan Putaran Rendah

CYCLOTRON ◽  
2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Adeguna Ridlo Pramurti
Keyword(s):  
Permanent Magnet ◽  
Output Power ◽  
Frequency Distribution ◽  
Output Voltage ◽  
Design Method ◽  
Magnetic Loss ◽  
Cogging Torque ◽  
Radial Flux ◽  
Generator Output ◽  
Permanent Magnet Generator

Abstrak—Generator magnet permanen fluks radial adalah mesin yang efektif untuk diaplikasikan pada sistem pembangkit listrik tenaga angin kecepatan rendah. Rugi magnetik akibat celah udara atau torsi denyut adalah salah satu masalah yang dapat menyebabkan penurunan performa tegangan keluaran dan daya keluaran pada generator jenis ini. Pada penelitian ini, topologi yang digunakan adalah stator ganda generator magnet permanen fluks radial. Topologi tersebut diharapkan mampu meningkatkan fluks listrik yang dihasilkan oleh kumparan-kumparan stator. Tujuan penelitian ini adalah untuk meningkatkan tegangan keluaran dan daya keluaran generator menggunakan metode desain pemasangan lebar gigi-gigi stator. Ada 3 variabel pada metode desain ini. Ketiga variabel desain mampu menurunkan nilai torsi denyut. Namun, ketiganya menyebabkan ketidakstabilan putaran generator. Hal ini disebabkan oleh peningkatan distribusi frekuensi torsi denyut. Ketiga variabel mampu meningkatkan tegangan keluaran generator dan daya keluaran generator masing-masing mencapai 3.94% dan 3.3%. Peningkatan tegangan keluaran dan daya keluaran generator tidak terlalu signifikan disebabkan oleh peningkatan distribusi frekuensi torsi denyut yang mencapai 162%.Kata kunci: daya keluaran, generator magnet permanen fluks radial, pemasangan lebar gigi-gigi stator, stator ganda, dan tegangan keluaran.Abstract— Radial flux permanent magnet generators are effective for application to low speed wind power generation systems. Magnetic loss due to air gap or called cogging torque is one of the problems that can cause a decrease in the output voltage and output power performance of this type of generator. In this study, the topology used is a dual stator radial flux permanent magnet generator. The topology is expected to increase the electrical flux produced by the stator coils. The purpose of this study is to increase the output voltage and output power of the generator using the stator teeth pairing design method. There are 3 variables in this design method. The three variables have been able to decrease the value of cogging torque. However, the three design variables have made the generator more unstable. This is due to an increase in the cogging torque frequency distribution. The three variables have been able to increase the generator output voltage and the generator output power respectively reached 3.94% and 3.3%. The increase in output voltage and output power of the generator is not too significant due to an increase in the cogging torque frequency distribution which reached 162%, karena itu tuliskan temuan atau kontribusi utama dari naskah sebaik mungkin dengan singkat. Keywords: cogging torque, dual stator, radial flux permanent magnet generator, output power, and output voltage

Design Study of Dual Generated Radial Flux Permanent Magnet Generator for Pico Hydro Generator

2012 ◽  
Vol 212-213 ◽  
pp. 1025-1029
Author(s):  
Gyeong Chan Lee ◽  
Hoe Cheon Kim ◽  
Tae Uk Jung ◽  
Jang Mok Kim
Keyword(s):  
Permanent Magnet ◽  
High Efficiency ◽  
Acoustic Noise ◽  
Structure Design ◽  
Cogging Torque ◽  
Electromagnetic Structure ◽  
Radial Flux ◽  
High Output Voltage ◽  
Internal Rotor ◽  
Permanent Magnet Generator

The RFPM(Radial Flux Permanent Magnet) generator has numerous advantages such as high output voltage and output power, high efficiency, manufacture easy but the slotted RFPM generator configuration produces the cogging torque. The cogging torque would be the source of acoustic noise and vibration. This paper presents the electromagnetic structure design analysis and the cogging torque reduction design of RFPM generator. It is composed of the inner stator and the outer stator and internal rotor. We called it as DG-RFPMG(Dual Generator-Radial Flux Permanent Magnet Generator). Firstly, the design of the pole-arc ratio of rotor magnets to reduce cogging torque is studied. Secondly, the design of the stator displacement of the outer stator and the inner stator to reduce the cogging torque is studied. Finally, the combined design optimization considering both the pole- arc ratio and the stator displacement to reduce the cogging torque is studied. The design of DG-RFPMG was calculated by 2D FEM(Finite Element Method).

Sign in / Sign up

Export Citation Format

Share Document