Ditemukan 4 dokumen yang sesuai dengan query
Ratna Prabowo
"Hukum induksi faraday menyatakan bahwa besarnya ggl induksi di dalam rangkaian tertutup sama (kecuali tanda negatifnya) dengan kecepatan perubahan fluks magnet pada rangkaian tersebut. Dengan hukum ini maka ggl induksi dapat dibangkitkan setiap kali ada perubahan fluks magnet pada kumparan. Salah satu metode untuk menghasilkan perubahan fluks magnet pada kumparan adalah dengan menempatkan perisai magnetik di antara magnet dan kumparan. Perisai ini berfungsi untuk menahan dan melewatkan fluks magnet ke kumparan. Ketika ditahan, fluks magnet mengalir melalui perisai sehingga fluks magnet tidak dapat masuk ke kumparan. Ketika dilewatkan, fluks magnet tidak mengalir melalui perisai tetapi langsung menuju kumparan. Dengan cara ini perubahan fluks magnet pada kumparan dapat terjadi sehingga ggl induksi dapat dihasilkan.
The faraday induction law states that voltage of emf induction in a circuit is proportional (except the minus sign) to the rate of change of the magnetic flux on those circuit. By this law, induced emf can be generated every time there is a change in magnetic flux in the coil. One methode for generating magnetic flux changing in the coil is by placing magnetic shield betwen the magnet dan coil. This shield serve to hold and release magnetic flux to the coil. When it hold, magnetic flux flow through the shield so that magnetic flux can not go into the coil. When it release, magnetic flux do not flow through the shield but direct to the coil. By this methode, magnetic flux change in the coil can be generated so that induced emf can be produced."
Lengkap +
Depok: Fakultas Teknik Universitas Indonesia, 2012
S42761
UI - Skripsi Open Universitas Indonesia Library
Chatra Hagusta Prisandi
"Generator Sinkron Magnet Permanen Fluks Aksial Tanpa Inti Stator memiliki unjuk kerja yang pada umumnya ditentukan oleh gelombang tegangan dan arus. Kedua hal tersebut dipengaruhi oleh konfigurasi Desain geometris generator. Studi ini membandingkan pengaruh jumlah kumparan stator terhadap nilai dan bentuk gelombang fluks magnet dan tegangan keluaran. Asumsi jumlah kutub magnet rotor pada tiap Desain penelitian adalah sama yaitu 24 kutub. Kesimetrisan antara setiap permukaan stator yang menangkap fluks magnet dari rotor setiap waktu sangat mempengaruhi tegangan keluaran. Hasil studi menunjukkan bahwa Desain 9 stator sesuai untuk konfigurasi tiga fasa sedangkan Desain 12 stator selaras untuk generator konfigurasi satu fasa.
A Coreless Axial Flux Permanent Magnet (AFPM) Synchronous Generator has a work quality that is determined by the voltage and current waves. Both of those things are influenced by geometric configuration of the generator. This research compares the effect of the number of stator coils to the magnet flux captured and the voltage generated for every design. It is stated that the number of rotor magnetic poles in every design are same, 24 poles. How symmetrical between every stator`s surface capture the magnetic flux in every second is very extremely affecting the output voltage. The result of this research proves that design with 9 coils is appropriate for three phase configuration, while design with 12 coils is suitable for one phase configuration of generator."
Lengkap +
Depok: Fakultas Teknik Universitas Indonesia, 2011
S853
UI - Skripsi Open Universitas Indonesia Library
Nahin, Paul J.
"This book offers a concise introduction to the analysis of electrical transients aimed at students who have completed introductory circuits and freshman calculus courses. While it is written under the assumption that these students are encountering transient electrical circuits for the first time, the mathematical and physical theory is not ‘watered-down.’ That is, the analysis of both lumped and continuous (transmission line) parameter circuits is performed with the use of differential equations (both ordinary and partial) in the time domain, and the Laplace transform. The transform is fully developed in the book for readers who are not assumed to have seen it before. The use of singular time functions (unit step and impulse) is addressed and illustrated through detailed examples.
The appearance of paradoxical circuit situations, often ignored in many textbooks (because they are, perhaps, considered ‘difficult’ to explain) is fully embraced as an opportunity to challenge students. In addition, historical commentary is included throughout the book, to combat the misconception that the material in engineering textbooks was found engraved on Biblical stones, rather than painstakingly discovered by people of genius who often went down many wrong paths before finding the right one. MATLAB® is used throughout the book, with simple codes to quickly and easily generate transient response curves."
Lengkap +
Switzerland: Springer Cham, 2019
e20501712
eBooks Universitas Indonesia Library
Wike Handini
"This study reports a novel strategy for minimizing torque ripple in a radial flux inset permanent magnet (RFIPM) generator by using a geometric modification of the magnet poles. We simulate the design of three different types of edge-rounded magnet (ERM) poles using finite element method magnetics (FEMM) software for a 16 poles and 24 slots RFIPM generator. We found that the edge-rounding of magnet poles significantly lowered the torque ripple of the generator with a reduction of about 74% (torque ripple of 7.76%). In addition, the modified RFIPM generator exhibited enhanced flux density uniformity in the air-gap of the generator (up to ~ 48.8%), leading to a smoother line of flux density."
Depok: Faculty of Engineering, Universitas Indonesia, 2018
UI-IJTECH 9:3 (2018)
Artikel Jurnal Universitas Indonesia Library