System design of mobile emergency power plant based on fuel cells

Author(s):  
Chengcheng Yin ◽  
Jiang Wang ◽  
Ma Tian-Cai
2014 ◽  
Vol 54 (12) ◽  
pp. 123019 ◽  
Author(s):  
A.R. Páramo ◽  
F. Sordo ◽  
D. Garoz ◽  
B. Le Garrec ◽  
J.M. Perlado ◽  
...  

Author(s):  
Xuegang Zhang ◽  
Wei Liu ◽  
Hai Chang ◽  
Jianbo Wen ◽  
Yiqian Wu ◽  
...  

For most of the newly built nuclear power plants, the computerized main control rooms (MCR) are adopted. The soft control, the typical feature of computerized Human-Interface System (HIS) in the computerized main control room and mediated by software rather than by direct physical connections, is comprised of safety and non-safety control interface which provides the operators with manual control for component-level, and allows both continuous control of plant process and discrete control of components in nuclear power plant. The safety soft control and information system (SSCIS) is used to give the safety commands to and check the immediate response of the safety process. This paper describes the application of the system design basis, functionality, communication, operation faceplate and system modes for SSCIS which is firstly introduced in CPR1000 nuclear power plant. The design criteria and basic design features of SSCIS is developed to be as the design basis of the design implementation. The ISG-04 ‘Highly-Integrated Control Rooms-Communications issues (HICRc)’ provides acceptable methods for addressing SSCIS communications in digital I&C system design. The NUREG0700 ‘Human-System Interface Design Review Guidelines’ is applied as reference for human factor engineering requirement in the SSCIS design. And the SSCIS design has also fully considered the possible customer usual practice.


Author(s):  
Syaiful Anwar ◽  
Muhamad Taufiq Tamam ◽  
Itmi Hidayat Kurniawan

Seiring perkembangan jaman, saat ini energi listrik telah menjadi salah satu kebutuhan primer dalam kehidupan sehari-hari, baik untuk melakukan pekerjaan ataupun kegiatan yang lainnya. Pembangkit Listrik Tenaga Air atau PLTA dengan menggunakan konsep hydrocat merupakan sebuah konsep pembangkit listrik yang diciptakan untuk aliran jalur irigasi yang memiliki ukuran tidak terlalu besar dan tingkat kedalamannya yang rendah. Oleh karena itu dibuatlah rancang bangun sistem pembangkit listrik menggunakan konsep hydrocat. Pada penelitian ini menggunakan generator DC sebagai sumber tenaga listrik dan menggunakan jenis turbin undershot. Penelitian ini dilakukan di Desa Karang Cegak Kecamatan Kutasari Kabupaten Purbalingga. Beban pada penelitian ini menggunakan lampu LED SMD 1,2 Watt, 2,4 Watt 3,6 Watt, dan 4,8 Watt. Alat ini mampu menghasilkan putaran pulley turbin air sebesar 69,2 rpm, 60,8 rpm, 59,0 rpm, 58,7 rpm, 57,1 rpm, dan 56,7 rpm. Putaran pulley generator DC sebesar 595,9 rpm, 586,1 rpm, 520,1 rpm, 506,2 rpm, dan 496,0 rpm. Besar tegangan yang dihasilkan 31,86 Volt, 9,20 Volt, 8,61 Volt, 8,38 Volt, dan 8,25 Volt. Besar arus yang dihasilkan sebesar 0,02 Ampere, dan besar daya yang dihasilkan sebesar 0,1836 Watt, 0,1718 Watt, 0,1671 Watt, dan 0,165 Watt.Along with the development of the times, nowadays electrical energy has become one of the primary needs in everyday life, both for doing work or other activities. Hydroelectric Power or Hydroelectric Power using the hydrocat concept is a power generation concept created for irrigation channel flow that is not too large and has a low depth level. Therefore, a power plant system design using the hydrocat concept was made. In this study using a DC generator as a source of electricity and using a type of undershot turbine. This research was conducted in Karang Cegak Village, Kutasari District, Purbalingga Regency. The load in this study uses 1.2 Watt SMD LED lamps, 2.4 Watt 3.6 Watt, and 4.8 Watt. This tool is capable of producing water turbine pulley rotation of 69.2 rpm, 60.8 rpm, 59.0 rpm, 58.7 rpm, 57.1 rpm, and 56.7 rpm. DC generator pulley rotation of 595.9 rpm, 586.1 rpm, 520.1 rpm, 506.2 rpm, and 496.0 rpm. The resulting voltages are 31.86 Volts, 9.20 Volts, 8.61 Volts, 8.38 Volts, and 8.25 Volts. The amount of current generated is 0.02 Ampere, and the amount of power generated is 0.1836 Watt, 0.1718 Watt, 0.1671 Watt, and 0.165 Watt.


2021 ◽  
Vol 66 (1) ◽  
pp. 1-13
Author(s):  
Wanyi Ng ◽  
Mrinalgouda Patil ◽  
Anubhav Datta

The objective of this paper is to study the impact of combining hydrogen fuel cells with lithium-ion batteries through an ideal power-sharing architecture to mitigate the poor range and endurance of battery powered electric vertical takeoff and landing (eVTOL) aircraft. The benefits of combining the two sources is first illustrated by a conceptual sizing of an electric tiltrotor for an urban air taxi mission of 75 mi cruise and 5 min hover. It is shown that an aircraft of 5000–6000 lb gross weight can carry a practical payload of 500 lb (two to three seats) with present levels of battery specific energy (150 Wh/kg) if only a battery–fuel cell hybrid power plant is used, combined in an ideal power-sharing manner, as long as high burst C-rate batteries are available (4–10 C). A power plant using batteries alone can carry less than half the payload; use of fuel cells alone cannot lift off the ground. Next, the operation of such a system is demonstrated using systematic hardware testing. The concepts of unregulated and regulated power-sharing architectures are described. A regulated architecture that can implement ideal power sharing is built up in a step-by-step manner. It is found only two switches and three DC-to-DC converters are necessary, and if placed appropriately, are sufficient to achieve the desired power flow. Finally, a simple power system model is developed, validated with test data and used to gain fundamental understanding of power sharing.


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