Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal International Journal of Applied Power Engineering (IJAPE) JET (Journal of Electrical Technology)
Hardi, Supri
Unknown Affiliation
Computer Science & IT Electrical & Electronics Engineering Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Innovation of control valve motorization method for regulating turbine rotation in micro hydro generators Hardi, Supri; Safitri, Nelly; Yaman, Yaman; Radhiah, Radhiah; Jamaluddin, Jamaluddin
International Journal of Applied Power Engineering (IJAPE) Vol 14, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v14.i1.pp90-100

Abstract

The method of transferring the main load to the dummy load is still used in micro hydropower plants. Because the turbine and generator are constantly operating at maximum capacity, the load transfer system, also known as the electronic load control (ELC) system, is ineffective and inefficient. The researcher devised a method for controlling the pressure/flow rate on the branch pipe by using a control valve motorized (CVM). Control valve motorized (CVM) is responsible for the opening and closing of branch pipelines using an electric motor. The goal is to achieve voltage and frequency stability by using CVM to adjust the flow/pressure of water in the branch pipe. The method involves designing and testing the CVM system via a Pelton turbine module connected to the generator. The results of testing the Pelton turbine module with a pressure of 4 kg/cm2 on a 34-inch pipe show that the turbine rotates at 800 rpm. Brushless direct current (BLDC) generator with 12 poles and a Pelton turbine. The proportional integral derivative (PID) controller control parameters are calculated by the control system using the Nichols-Ziggler method, with tuning results of PB 130%, Ti 2.8 seconds, and Td 0.7 seconds. A frequency of 50 Hz and a voltage of 61 volts is produced by controlling the set point (SP) at 55% of the process variable (PV) and the manipulated variable (MV) to CVM at 38%, respectively. The conditions are implemented by varying the load on the system by connecting and disconnecting the load; the system remains stable for 5 seconds.
Sistem Pengendali Tegangan pada Generator Induksi 3 Phasa Menggunakan Kontrol PI Abubakar, Said; Hardi, Supri; Alfayumi, Rizal
JET (Journal of Electrical Technology) Vol 2, No 3 (2017): JET Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jet.v2i3.234

Abstract

Pada umumnya Pembangkit Listrik Tenaga Mikrohidro (PLTMh) banyak memanfaatkan motor induksi sebagai generator induksi karena cukup menggunakan energi terbarukan seperti air dan angin sebagai penggerak (Prime over) dan tidak banyak membutuhkan perawatan. Permasalahan generator induksi adalah apabila dibebani tegangannnya akan turun dan apabila terjadi pengurangan beban, maka tegangan akan naik. Tujuan penelitian ini adalah menstabilkan tegangan pada generator induksi 3 phasa 1 Kw 4 kutub menggunakan kontrol PI dengan cara menentukan parameter dan respon yang tepat. Metode yang digunakan dalam penelitian ini adalah metode pengujian dan pengukuran untuk mendapatkan parameter kendali Kp dan Ti berdasarkan metode Ziegler-Nichols. Hasil pengujian dengan mentuning kurva S didapat nilai Tu = 0,3 detik dan Tg = 2 detik serta parameter Kp = 6 dan Ti = 0,99. Respon kendali penstabil tegangan maksimal 25 detik dengan penambahan dan pengurangan beban sebesar 60 Watt. Tegangan stabil 200 VAC, frekuensi 50 Hz, dan kecepatan generator konstan 1538 Rpm.
Co-Authors Abubakar, Said Alfayumi, Rizal Jamaluddin Jamaluddin Nelly Safitri Radhiah, Radhiah Yaman Yaman, Yaman