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RISS 인기검색어
- 검색키워드
- 저자 : ( Eonuck Kang ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Kang, Eonuck,Pratama, Pandu Sandi,Byun, Jaeyoung,Supeno, Destiani,Chung, Sungwon,Choi, Wonsik Korean Society for Agricultural Machinery 2018 바이오시스템공학 Vol.43 No.2
Purpose: In this study, a maintenance free super-capacitor battery charging system based on the photovoltaic module, to be used in agricultural electric carriers, was developed and its charging characteristics were studied in detail. Methods: At first, the electric carrier system configuration is introduced and the electric control components are presented. The super-capacitor batteries and photovoltaic module used in the experiment are specified. Next, the developed charging system consisting of a constant current / constant voltage Buck converter as the charging device and a super-capacitor cell as a balancing device are initiated. The proposed circuit design, a developed PCB layout of each device and a proportional control to check the current and voltage during the charging process are outlined. An experiment was carried out using a developed prototype to clarify the effectiveness of the proposed system. A power analyzer was used to measure the current and voltage during charging to evaluate the efficiency of the energy storage device. Finally, the conclusions of this research are presented. Results: The experimental results show that the proposed system successfully controls the charging current and balances the battery voltage. The maximum voltage of the super-capacitor battery obtained by using the proposed battery charger is 16.2 V, and the maximum charging current is 20 A. It was found that the charging time was less than an hour through the duty ratio of 95% or more. Conclusions: The developed battery charging system was successfully implemented on the agricultural electric carriers.
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( Eonuck Kang ),( Pandu Sandi Pratama ),( Jaeyoung Byun ),( Destiani Supeno ),( Sungwon Chung ),( Wonsik Choi ) 한국농업기계학회 2018 바이오시스템공학 Vol.43 No.2
Purpose: In this study, a maintenance free super-capacitor battery charging system based on the photovoltaic module, to be used in agricultural electric carriers, was developed and its charging characteristics were studied in detail. Methods: At first, the electric carrier system configuration is introduced and the electric control components are presented. The super-capacitor batteries and photovoltaic module used in the experiment are specified. Next, the developed charging system consisting of a constant current / constant voltage Buck converter as the charging device and a super-capacitor cell as a balancing device are initiated. The proposed circuit design, a developed PCB layout of each device and a proportional control to check the current and voltage during the charging process are outlined. An experiment was carried out using a developed prototype to clarify the effectiveness of the proposed system. A power analyzer was used to measure the current and voltage during charging to evaluate the efficiency of the energy storage device. Finally, the conclusions of this research are presented. Results: The experimental results show that the proposed system successfully controls the charging current and balances the battery voltage. The maximum voltage of the super-capacitor battery obtained by using the proposed battery charger is 16.2 V, and the maximum charging current is 20 A. It was found that the charging time was less than an hour through the duty ratio of 95% or more. Conclusions: The developed battery charging system was successfully implemented on the agricultural electric carriers.
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( Jaeyoung Byun ),( Pandu Sandi Pratama ),( Eonuck Kang ),( Eunsuk Lee ),( Yeonho Jeon ),( Sungwon Chung ),( Wonsik Choi ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Electric vehicles carrier are increasingly used in many field such as industry, factories, marts, and leisure areas. It replaces the powertrain that have problems of noise and soot for transporting compost, fertilizer, seedlings and harvests required for field work. There are many benefits for women or aged farmers, and it is easy to add structures and functions according to the requirements of farmers. However, it mainly uses calcium battery which is the main power generating energy of electric car. Calcium batteries have a long charging time of more than 12 hours and battery life due to charging and discharging is limited to agricultural electric vehicle users working in the field. Therefore, in order to overcome this disadvantage, this study first investigated the stabilization of the output load in order to replace the calcium lead battery by using the super-capacitor. Bi-directional application technology used for charging and discharging, and boost DC / DC conversion technology to provide stable output of load generated by user's transportation of crops. The output was check to identify the unstable driving factors that can occur during operation. The power source used in this research is 6 cells 2.7V super-capacitor connected in series with total voltage 16.2V. The desired output voltage that should be maintained when the motor operate at nominal velocity is 12V. As a result, it was confirmed that the input voltage was constantly maintained at 12V even though the super-capacitor output voltage drop within the range of 5V to 16.2V. If the maximum current value up to 60A can be achieved while maintaining the output voltage at 12V, it can be concluded that the proposed system will be able to satisfy the output when driving the maximum carrying weight of 150Kg according to the loading of the electric transport vehicle.
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