Keyoonwong, Wiwat

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Keyoonwong, Wiwat
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wiwat.ke@kmitl.ac.th

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    PDLC film's energy consumption and performance for light filtration system
    (2018-08-20)
    Keyoonwong, Wiwat
    ;
    Khan-Ngern, Werachet
    ;
    Ruxsri, Paritpong Tavichaiyut Viritpol
    ;
    Raksasataya, Vishnu
    This paper proposes to record the result of energy consumption and light transmission rate when using PDLC film with green insulated glass, at size lxl sq.m. with 6-12-6 mm. standard thickness. The result of energy consumption and performance in protecting from the sun light are explained. The PDLC energy consumption characteristic and its principle are described. The methodology to test the performance of PDLC film with green insulated glass also incuded. The result indicated that different voltage source level will also be able to affect the light transmission rate. From experiment found that at level 0 volt had a light transmission rate at 22.3 percent, level 15 volts at 28.8 percent, level 30 volts at 32.0 percent, level 45 volts at 33.2 percent, level 55 volts at 33.4 percent and level 70 at 34.0 percent, respectively. All of these values were compared with direct light intensity from outside. In the future, it can be used in purpose for energy saving inside building.
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    High performance BLDC motor control for electric vehicle
    (2018-08-13)
    Khan-Ngern, Werachet
    ;
    Keyoonwong, Wiwat
    ;
    Chatsiriwech, Narongrit
    ;
    Sangnopparat, Pongsakorn
    ;
    Mattayaboon, Ponghiran
    This paper presents about design of high performance brushless dc motor (BLDC) control for electric vehicle (EV) which focusing on rear differential of electric car uses electronic control system or well known as electronic differential system (EDs). The advantage of EDs is help to adjust wheel speed while cornering by driving two BLDC motor attached to two rear wheels that two wheel speed is different. This system can accurately control process by monitoring output and feeding some of it back to compare actual output with desired output so as to reduce the error. It is well known as closed loop control system. The speed of BLDC is experimentally measured by a tachometer. The steering angle and speed of EV is calculated by equations derived from Ackemuuui-Jesntsnd model using Arduino. Load simulation using MATLAB Simulink. The experimental results electronic differential using will enhances efficiency of electric vehicle driving system.
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    Estimating Surface Temperature Profile Of Li-Ion Battery Under Several Conditions
    (2024-01-01)
    Keyoonwong, Wiwat
    ;
    Mesakhun, Korndanai
    ;
    Intanil, Kananat
    ;
    Siriwilawan, Nicharee
    ;
    Chipchukiad, Tisorn
    In recent years, electric vehicles have become increasingly popular as a highly efficient and environmentally friendly transportation option worldwide. This trend is primarily due to the growing global awareness of the importance of pollution and carbon emissions from road transportation. According to the International Energy Agency (IEA) latest report, the sales of electric vehicles have exceeded 10 million in 2022. Electric vehicles consist of various components that are used for propulsion. One of the crucial components that stores energy for propulsion is the battery. The efficiency and lifetime of batteries depend on the temperature during usage. To ensure long lifetime and efficiency of batteries, temperature management is crucial. Batteries perform best when the temperature is neither too low or high. Therefore, the thermal issue of battery in electric vehicles is essential and has been continuously researched and developed. Heat in batteries and thermal modeling of batteries are important for estimating battery temperature profiles.
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    Study impedance and temperature behavior of LFP battery as function of relative humidity and temperature under various conditions
    (2024-01-01)
    Keyoonwong, Wiwat
    ;
    Phiphuannok, Kankawi
    ;
    Janesawatpong, Kittipot
    ;
    Seeboonrueang, Kotchapon
    ;
    Amnuaysap, Nuttapum
    Nowadays, lithium-ion batteries are widely employed in a lot of applications. For example, using batteries to provide energy for Electric Vehicles. In use, Batteries are charged and discharged in many cycles, which impacts battery aging. Battery aging causes capacity reduction and internal resistance increase. As is well known, the battery resistance changes with temperature and state of charge (SOC). However, no one has yet studied whether relative humidity affects the battery resistance or not. In this paper, behavior of LFP batteries as function of relative humidity and temperature under various conditions is analyzed. During the aging process, a battery impedance meter was performed at various conditions to analyze the change of the battery impedance due to relative humidity and temperatures. Additionally, the time required to charge the battery under different conditions was analyzed.
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    Embedded Electronic Differential System on Two Brushless DC Motor Drives for Electric Vehicle Steering Control
    (2018-08-20)
    Khan-Ngern, Werachet
    ;
    Keyoonwong, Wiwat
    ;
    Chatsiriwech, Narongrit
    ;
    Sangnopparat, Pongsakorn
    ;
    Mattayaboon, Ponghiran
    The project present about Embedded Electronic Differential System(EDs) on Two Brushless DC (BLDC) Motors Drives for Electric Vehicle Steering Control. EDs using for steering control to balance speed between two BLDC motors and enhances efficiency of electric vehicle driving system. Efficiency testing on BLDC motor driving system to determine the efficiency of BLDC motor driving system including inverter and BLDC motor at various load conditions. The maximum efficiency of BLDC motor at 48 volts is 75.71% with 6.52 kg load Embedded system including speed limit to protect BLDC motor from overrated speed and feedback speed, Handwriting coding by Arduino mega 2560. The steering control using digital potentiometer, MCP41010. When the turning angle of electric vehicle is any degrees (right or left turning status), the control system will command. And when BLDC motor near overrated speed and turning status, the overall speed of electric vehicle is reduced because the both BLDC motors speed are limited at 840 rpm. The experimental results give satisfactory performance.