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All Journal ASEAN Journal of Science and Engineering Education (AJSEE) Indonesian Journal of Educational Research and Technology (IJERT) Control Systems and Optimization Letters
Channareth Srun
National Polytechnic Institute of Cambodia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Other

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Design of VHDL for MPPT Incremental Conductance on FPGA with Altera DE2-115 Development Board for Educational Purposes Virbora Ny; Channareth Srun; Phok Chrin; Sokchea Am; Bunthern Kim; Saran Meas
ASEAN Journal of Science and Engineering Education Vol 4, No 1 (2024): (ONLINE FIRST) AJSEE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajsee.v4i1.57991

Abstract

In this paper, the design of VHDL for MPPT Incremental Conductance on an FPGA with the Altera DE2-115 Development Board is presented for educational purposes. The FPGA is programmed to control the MPPT tracking process by obtaining the maximum power from the solar panel. The Altera DE2-115 Development Board is used for the FPGA system design. The system is designed for individual blocks that are designed specifically to operate each step in the MPPT process. The system consists of five main parts: the solar panel, ADC, FPGA, PWM, and DC-DC Boost Converter. The solar panel provides the DC voltage and current. The ADC converts the solar panel's constantly changing voltage and current to a digital signal. The INC algorithm is started after the FPGA receives the digital signal from the ADC. The output PWM from the MPPT algorithm will drive the DC-DC Boost Converter circuit for the solar power tracking process. The experimental results show that the designed system can track the maximum power point of the solar panel.
Design of Emergency Position Reporting System for Disasters Using Amateur Radio and Automatic Packet Reporting System (APRS) as a Mobile Station Operator for Educational Purposes Sok Oeun Un; Kimtho Po; Kosorl Thourn; Rathna Pec; Channareth Srun; Seven Siren
Indonesian Journal of Educational Research and Technology Vol 3, No 3 (2023): (ONLINE FIRST) IJERT: December 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijert.v3i3.58888

Abstract

The emergency position reporting system is proposed for disasters using amateur radio and Automatic Packet Reporting System (APRS) as mobile station operators for unexpected natural disasters after the Internet and mobile communication system infrastructure are destroyed surrounding the disaster areas. The location tracking systems are used with amateur radio devices and implemented with APRS in the act of position reports. The position information is received from the smartphone’s Global Positioning System (GPS) using the offline mode to the APRS via Bluetooth network that is connected to transceivers. The transceiver used the dual-band Yagi antenna 145Mhz/435Mhz called Mobile Station Operator (MSO) as the APRS client using callsign. The MSO collected the location data sent to the Response Station Operator (RSO) that combined with APRS, transceivers, and antenna. The server system allowed data location information monitoring using a valid passcode from a licensed amateur radio operator and used strictly by the servers to validate the connection to the server application.
Robust Parameter Identification and Control Modeling of Low-Cost Brushed DC Motors Using the Nelder-Mead Algorithm Channareth Srun; Mengseu Pheng; Sovathana Um; Chivon Choeung; Seven Siren; Sros Nhek
Control Systems and Optimization Letters Vol 4, No 2 (2026)
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/csol.v4i2.321

Abstract

Brushed DC motors are widely used in next-generation automation systems due to their low complexity and ease of control. However, more affordable models often lack sufficient information about their detailed parameters, which makes accurate control and modeling difficult. This paper presents an estimation method for the main parameters of a low-cost brushed DC motor using the Nelder-Mead algorithm. Real-time measurements of speed were obtained through Arduino-based testing, followed by parameter estimation using MATLAB and Simulink. The estimated parameters include armature resistance, inductance, moment of inertia, viscous damping coefficient, back electromotive force constant, and torque constant. The estimated results, validated strictly against a high-specification reference motor datasheet, demonstrate strong accuracy in critical mechanical parameters. Specifically, the algorithm estimated the torque constant with a minimal error of 0.17% and the viscous damping coefficient with an error of 4.8%. However, due to the inherent structural unidentifiability when relying solely on macroscopic speed measurements, electrical parameters such as armature resistance, inductance, and moment of inertia exhibited severe deviations ranging from 39.6% to 52.7%. While the objective function's inability to fully decouple these intertwined variables restricts isolated physical parameter extraction, the method effectively captures the equivalent macroscopic dynamic behavior. The predictive validity of the proposed method was further confirmed by implementing a PI controller based on the estimated transfer function. The experimental results confirm that despite internal physical parameter discrepancies, the algorithm provides an equivalent and robust dynamic model that significantly improves motor performance in control systems. This work proposes an inexpensive and efficient system identification solution for low-cost motor control characterization.
Inner Loop-Based Robust Control Design Considering Uncertain Grid Impedance for a Single-Phase AC–DC Converter Sokvan In; Chivon Choeung; Sokna San; Socheat Yay; Seven Siren; Channareth Srun
Control Systems and Optimization Letters Vol 4, No 1 (2026)
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/csol.v4i1.293

Abstract

Single-phase AC–DC converters based on an H-bridge active rectifier topology are widely used in applications such as electric vehicle charging and renewable energy interfaces. To achieve zero steady-state error using integral control, it is essential to regulate the output in the dq-synchronous frame. A key challenge in controlling single-phase power converters is the inability to directly convert single-phase signals to dq-frame signals. This paper proposes the use of a digital all-pass filter to generate β-signals, which provide the orthogonal component required for dq-transformation in single-phase systems. The control strategy involves an outer loop proportional–integral (PI) controller for regulating the output DC voltage, while an inner loop a linear matrix inequality (LMI)-based robust state-feedback controller with integral action is employed to regulate the AC current. The dq-frame transformation enables effective current regulation, while the robust control law ensures closed-loop stability based on Lyapunov function in the presence of parameter uncertainties. The robustness of this control approach is demonstrated by considering system uncertainties, including variations in the filter inductance with nominal value 3 mH, and the effectiveness of the proposed control is confirmed through simulation results under different resistive load conditions, demonstrating stable operation and accurate DC voltage regulation. Future work will focus on experimental validation of the proposed control strategy and investigation of converter performance under grid disturbance conditions such as voltage unbalance and harmonic distortion.
Co-Authors Bunthern Kim Chivon Choeung Kimtho Po Kosorl Thourn Mengseu Pheng Phok Chrin Rathna Pec Saran Meas Seven Siren Socheat Yay Sok Oeun UN Sokchea Am Sokna San Sokvan In Sovathana Um Sros Nhek Virbora Ny