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All Journal Journal of Electrical Power Control and Automation (JEPCA) Science Get Journal
Rozlinda Dewi
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Biochemistry, Genetics & Molecular Biology Chemistry Electrical & Electronics Engineering Mathematics Physics

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Efek Duty Cycle Pwm pada Pengendalian Kecepatan Motor BLDC 3 Phasa Rozlinda Dewi
Journal of Electrical Power Control and Automation (JEPCA) Vol 1, No 1 (2018): Juni
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.437 KB) | DOI: 10.33087/jepca.v1i1.4

Abstract

Nowadays almost all electric convertible equipments are in motion using Brushless Direct Current (BLDC) motors, because BLDC motors have high efficiency and energy density because the lack of brush makes BLDC motors reliable enough, maintenance is cheap and can be used for high speed. This research is more emphasized on the controller unit using DRV 11873 IC which has EVM (Evaluation Module) as strong magnetic induction enhancer in BLDC motor winding (stator) with Pulse Width Modulation (PWM) duty cycle mode, the result of research shows the relationship between the addition of duty cycle PWM and the addition of a large supply voltage V (V) given to the 3 phase Phas motor BLDC to the motor speed change (RPM). Through the calculation of coefficient of determination (R2) each experimental results between the change of power supply voltage (V) to the speed (RPM) obtained 0.998 and the calculation of coefficient of determination (R2) change duty cycle PWM signal to the speed (RPM) 0.996.
Rancang Program Sistem Pemadam Kebakaran Berbasis Programable Logic Controller Smart Relay Type SR3B261BD Leily W Johar; Fadli Eka Yandra; H NJ Thamrin; Umar Djufri; Rozlinda Dewi
Journal of Electrical Power Control and Automation (JEPCA) Vol 5, No 2 (2022): Desember
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jepca.v5i2.79

Abstract

Programmable logic controller (PLC) can be programmed for various purposes, one of which is to design a fire extinguishing system, by assembling several components of PLC, solenoid, springkle, powersupply ,adapter ,smokedetector, heatdetector, pilotlamp, pushbutton, relay, selector switch. design the program settings to detect smoke and high temperatures that occur in the event of a fire. if the sensor detects smoke and high temperature, the sensor will give a signal to the plc to turn on and activate all working components and extinguish the fire.
Study on Material Innovation and Electrochemical Performance in Solid-State Battery Technology for Sustainable Energy Applications Herlina Rahim; Rozlinda Dewi; Venny Yusiana; Rismen Sinambela
Science Journal Get Press Vol 3 No 1 (2026): January, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v3i1.373

Abstract

Solid-state batteries (SSBs) have gained strong attention for their higher safety, greater energy density, and improved electrochemical stability compared to liquid-electrolyte lithium-ion batteries, although challenges remain in optimizing ionic conductivity, interfacial resistance, and cycling stability. This study investigates the synthesis, structural characteristics, and electrochemical performance of the argyrodite solid electrolyte Li₆PS₅Cl (LPSC), produced via high-energy mechanical milling and integrated into a prototype SSB using a Li-metal anode and NMC811 cathode. XRD analysis confirmed the formation of the cubic argyrodite phase, while SEM revealed a homogeneous particle morphology conducive to efficient ion transport. Electrochemical impedance spectroscopy (EIS) showed an ionic conductivity of 1.87 × 10⁻³ S/cm at 25°C, which increased to 3.41 × 10⁻³ S/cm after annealing at 550°C. Galvanostatic cycling at 0.1C demonstrated stable capacity retention of 92.5% after 50 cycles, indicating strong interfacial contact between the LPSC electrolyte and NMC811 cathode. Comparative evaluation with recent SSB literature shows that the optimized LPSC electrolyte achieves performance levels comparable to state-of-the-art sulfide-based electrolytes due to improved crystallinity and reduced grain-boundary resistance. These results highlight the potential of mechanically milled LPSC as a promising solid electrolyte for next-generation SSB applications.
Co-Authors Fadli Eka Yandra H NJ Thamrin Herlina Rahim Leily W Johar Rismen Sinambela Umar Djufri Venny Yusiana