Vertical axis wind turbine (VAWT) can be operated in any direction of wind speed, but it has low rotation. To improve the performance of VAWT in which low rotation, this paper presents a simple control strategy of VAWT using a DC-DC boost converter to tap constant voltage in a standalone application. The main objective of this research is to maintain a constant output voltage of converter despite variation input voltage affected by variable wind speed. A simple proportional-integral (PI) controller has been used for a DC-DC boost converter and tested in MATLAB-Simulink environment, with the closed-loop system of the converter maintain constant output voltage although the wind speed is kept changing. The PI controller obtains the feedback from the output voltage of the boost converter to produce the correct pulse width modulation (PWM) duty cycle and trigger the metal oxide semiconductor field effect transistor (MOSFET) following the reference voltage of the turbine. This system has suppressed the value of overshoot and increased the efficiency of wind turbines as 34 %.
All renewable energy, and all the potential that is currently being explored to face the challenges of global warming by researchers around the world. One of them is a wind turbine. This paper discusses the control of a standalone vertical axis wind turbine with PID controller. The development of turbine technology has been widely developed in terms of aerodynamics, generators, and power electronics configurations. we will explain about the control of a standalone type turbine with a simple control using PID controller. The wind turbine rotor is connected to a Permanent Magnet Synchronous Generator (PMSG), and DC-DC converter. PID controller is used to control the duty cycle of the converter mosfet, so that it can maintain the voltage when the wind speed continues to fluctuate. The simulation shows that PID is able to maintain a voltage with an overshoot value of 4.2%, and reaches a steady state of 0.2 s.
Tujuan penelitian ini adalah untuk menghasilkan Perangkat blended learning yang dapat diterapkan untuk menghadapi era new normal Pandemi covid-19 dan untuk mengetahui validitasnya. Perangkat pembelajaran dikembangkan untuk mata kuliah Aljabar Linier di program studi Teknik Informatika (TI) Politeknik Negeri Banjarmasin (Poliban). Penelitian ini merupakan penelitian pengembangan menurut Borg and Gall yang meliputi studi pendahuluan, perancangan dan pengembangan program. Studi pendahuluan berdasarkan kondisi perkuliahan di Poliban. Perancangan produk telah dilakukan dengan pembuatan perangkat blended learning yang terdiri atas Silabus, RPP, buku pegangan mahasiswa dan kelas daring pada moodle elearning poliban. Tahap pengembangan produk adalah uji validitas perangkat yang dihasilkan oleh tim ahli. Penelitian ini telah menghasilkan perangkat pembelajaran berupa Silabus, RPP, dan kelas online pada moodle elearning poliban dengan alamat elearning.poliban.ac.id. Dari hasil uji validitas perangkat oleh dua orang ahli, didapat skor validitas produk sebesar 4,15 sehingga dapat disimpulkan bahwa perangkat blended learning yang dihasilkan telah valid. Perangkat pembelajaran tersebut saat ini telah mulai digunakan pada pembelajaran Aljabar Linier Prodi TI pada mahasiswa angkatan 2020/2021 yang saat ini masih berjalan 100% daring.
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