Construction of Control System for OTEC Plant with Higher Efficiency Considering Dynamics and Constraints
| Project/Area Number |
18K04207
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21040:Control and system engineering-related
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| Research Institution | Saga University |
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Principal Investigator |
Matsuda Yoshitaka 佐賀大学, 海洋エネルギー研究センター, 助教 (00578429)
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| Co-Investigator(Kenkyū-buntansha) |
後藤 聡 佐賀大学, 理工学部, 教授 (20225650)
杉 剛直 佐賀大学, 海洋エネルギー研究センター, 准教授 (00274580)
池上 康之 佐賀大学, 海洋エネルギー研究センター, 教授 (80232172)
安永 健 佐賀大学, 海洋エネルギー研究センター, 助教 (50758076)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 海洋温度差発電 / 2段ランキンサイクル / 動特性 / 拘束条件 / むだ時間 / 制御システム |
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| Outline of Final Research Achievements |
In this research, dynamics of an ocean thermal energy conversion (OTEC) plant using double-stage (multi-stage) Rankine cycle and the control problem were investigated. Here, it is noted that the double-stage (multi-stage) Rankine cycle has been developed to achieve higher thermal efficiency of OTEC plant. In particular, in the model construction considering the dynamics, some models with warm and cold seawater flow rates and working fluid flow rates for power generation control were proposed. Furthermore, some control methods for power generation control were also proposed. The effectiveness of the proposed models and control methods were verified through numerical simulations and experiments.
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| Academic Significance and Societal Importance of the Research Achievements |
近年再生可能エネルギーの有効利用促進が求められているが，その有効なエネルギー源のひとつに海洋温度差発電（OTEC）がある．すなわち，再生可能エネルギーに関する検討という点に本研究の社会的意義がある．また，OTECは一般的に熱効率が低いことが大きな課題であるが，本研究は，近年超高効率化を目指して研究が進められている2段（多段）ランキンサイクルについて，超高効率な状態を維持する制御手法の具体的な構築方法を検討している．これが本研究の学術的意義である．
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Report
(4 results)
Research Products
(29 results)
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[Presentation] Control System for Water Level Control of Flash Chamber in a Spray Flash Desalination System via Stochastic Processes2020
Author(s)
Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
Organizer
Proceedings of the 51st ISCIE International Symposium on Stochastic Systems Theory and Its Applications, The University of Aizu, Fukushima, JAPAN, November 1-2, 2019, pp. 7-12
Related Report
Int'l Joint Research
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[Presentation] Control System for Water Level Control of Flash Chamber in a Spray Flash Desalination System via Stochastic Processes2019
Author(s)
Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
Organizer
Extended Abstract of the 51st ISCIE International Symposium on Stochastic Systems Theory and Its Applications, The University of Aizu, Fukushima, JAPAN, November 1-2, 2019, pp. 19-20
Related Report
Int'l Joint Research
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[Presentation] Model Construction of OTEC Plant Using Double-stage Rankine Cycle with Time Delay by Considering Separator and Working Fluid Tank2019
Author(s)
Yuya Aosaki, Yoshitaka Matsuda, Takenao Sugi, Satoru Goto, Takeshi Yasunaga, Yasuyuki Ikegami
Organizer
Proceedings of 2019 12th Asian Control Conference (ASCC2019), Kitakyushu, Fukuoka, Japan, June 9-12, 2019, pp. 358-363
Related Report
Int'l Joint Research
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[Presentation] Simultaneous Regulation of Multiple Flow Rates for Power Generation Control of OTEC Plant Using Double-stage Rankine Cycle2018
Author(s)
Yoshitaka Matsuda, Riku Oouchida, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
Organizer
SICE Annual Conference 2018, September 11-14, 2018, Nara Kasugano International Forum, Nara, Japan, pp. 983-988
Related Report
Int'l Joint Research
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[Presentation] Anti-windup Compensation for Water Level Control of a Spray Flash Desalination System with Flow Rate Limitations2018
Author(s)
Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
Organizer
2nd IEEE Conference on Control Technology and Applications, The Scandic Hotel Copenhagen, Copenhagen, Denmark, August 21-24, 2018, pp. 1363-1368
Related Report
Int'l Joint Research
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