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Optimizing the design of complex energy conversion systems by Branch and Cut

Turang Ahadi-Oskui, Stefan Vigerske, Ivo Nowak, George Tsatsaronis
2010 Computers and Chemical Engineering  
The algorithm generates a convex relaxation of the MINLP and applies a Branch and Cut algorithm to the relaxation.  ...  Thus, the optimization problem is formulated as a highly non-convex mixed-integer nonlinear problem (MINLP) and solved by the MINLP solver LaGO.  ...  Acknowledgements: This work was supported by the German Science Foundation (DFG) under grants NO 421/2-1, TS 79/1-1, and TS 79/1-3.  ... 
doi:10.1016/j.compchemeng.2010.03.007 fatcat:pxbi7qzgijdbtoiwbh7ujrkqbe

A relaxation-based heuristic for the design of cost-effective energy conversion systems

T. Ahadi-Oskui, H. Alperin, I. Nowak, F. Cziesla, G. Tsatsaronis
2006 Energy  
Mathematicians and engineers have developed in a joint research project a solution approach for performing simultaneous structural and parameter optimization in the design of cost-effective complex energy  ...  conversion systems.  ...  INTRODUCTION The optimization of the design of energy conversion systems has been studied extensively by engineers for many years now.  ... 
doi:10.1016/j.energy.2005.05.016 fatcat:5i763jj5szfrvjrcodscpytxem

Implementation of scalable power and area efficient high-throughput Viterbi decoders

T. Gemmeke, M. Gansen, T.G. Noll
2002 IEEE Journal of Solid-State Circuits  
Today's data reconstruction in digital communication systems requires designs of highest throughput rate at low power.  ...  Using a flexible datapath generator facilitates the essential quantitative optimization from architectural down to physical level to fully exploit the low-power and high-speed potential of a given technology  ...  The authors also appreciate the comments and suggestions of the reviewers.  ... 
doi:10.1109/jssc.2002.1015694 fatcat:apsazi2kkrac3panqorqu3gh7u

Countermeasures to Decrease Water Cut and Increase Oil Recovery from High Water Cut, Narrow-Channel Reservoirs in Bohai Sea

Gaocheng Feng, Yuhui Zhou, Weiying Yao, Lingtong Liu, Zhao Feng, Yanjun Yi, Yi Feng, Zhongwei Wu
2021 Geofluids  
Additionally, the well pattern optimization and injection-production optimization strategies were integrated to optimize and adjust the seepage field system.  ...  The findings reported herein this paper help understand the development of similar offshore oilfields with a high water cut.  ...  The difficulties of developing such reservoirs lie in the narrow and banded distributed channels, formation of multistage branching, complex reservoir connectivity, limited natural energy and displacement  ... 
doi:10.1155/2021/6671098 fatcat:xxt4jvm7w5f7doq42eizly5znu

Optimal distributed generation planning in active distribution networks considering integration of energy storage

Yang Li, Bo Feng, Guoqing Li, Junjian Qi, Dongbo Zhao, Yunfei Mu
2018 Applied Energy  
The test results on the PG&E 69-bus distribution system demonstrate that the proposed method is superior to other current state-of-the-art approaches, and that the integration of energy storage makes the  ...  capacities of DGs to maximize the investment benefits and system voltage stability and to minimize line losses.  ...  at the bus i PLO system active power losses without DGs QLO system reactive power losses without DGs SLm actual complex power in the branch m SLm(rated) rated complex power in the branch m PSwing active  ... 
doi:10.1016/j.apenergy.2017.08.008 fatcat:7zhp7vyombcblg4bi7ybaputfe

Optimal accommodation and management of high renewable penetration in distribution systems

Nand Kishor Meena, Anil Swarnkar, Nikhil Gupta, Khaleequr Rehman Niazi
2017 The Journal of Engineering  
The paper presents a new bi-level optimisation framework for optimal accommodation and operational management of wind power generation and battery energy storage system (BESS) simultaneously, aiming to  ...  A new objective function is suggested comprising of annual energy loss in feeders, reverse power flow into the grid, non-utilised BESS capacities, round-trip conversion losses of BESSs and node voltage  ...  The quick growth of AC/DC conversion devices has introduced many conversion losses in the system which needed to be minimised.  ... 
doi:10.1049/joe.2017.0659 fatcat:pthax2pby5gzti53yugnjumuju

Panorama weaving

Brian Summa, Julien Tierny, Valerio Pascucci
2012 ACM Transactions on Graphics  
Current seam computation algorithms use optimization methods that may be slow, sequential, memory intensive, and prone to finding suboptimal solutions related to local minima of the chosen energy function  ...  Additionally, we present a system for the interactive user exploration of the seam solution space (bottom, right), easily enabling: (a) the resolution of moving objects, (b) the hiding of registration  ...  The authors are grateful to Sophie Masse for the graphical design of the system's GUI, Delila Omerbasić and Joshua A.  ... 
doi:10.1145/2185520.2185579 fatcat:r2tipfalu5bohcxpy637null2a

Panorama weaving

Brian Summa, Julien Tierny, Valerio Pascucci
2012 ACM Transactions on Graphics  
Current seam computation algorithms use optimization methods that may be slow, sequential, memory intensive, and prone to finding suboptimal solutions related to local minima of the chosen energy function  ...  Additionally, we present a system for the interactive user exploration of the seam solution space (bottom, right), easily enabling: (a) the resolution of moving objects, (b) the hiding of registration  ...  The authors are grateful to Sophie Masse for the graphical design of the system's GUI, Delila Omerbasić and Joshua A.  ... 
doi:10.1145/2185520.2335434 fatcat:u4bkcrayxnc65oijkh7vwycv5q

2020 PELS Year End Index

2020 IEEE Power Electronics Magazine  
., +, MPEL June 2020 34-36 Optimization Power Electronics Design Methods and Automation in the Digital Era: Evo- lution of Design Automation Tools.  ...  Mackie, A., MPEL June 2020 76-79 Complex systems A Breakthrough in Design Verification of Megawatt Power Electronic Sys- tems.  ... 
doi:10.1109/mpel.2020.3047185 fatcat:tt77xa2dlbexha2xpya444qu7y

Optimization of the Design and Partial-Load Operation of Power Plants Using Mixed-Integer Nonlinear Programming [chapter]

Marc Jüdes, Stefan Vigerske, George Tsatsaronis
2009 Energy Systems  
This paper focuses on the optimization of the design and operation of combined heat and power plants (cogeneration plants).  ...  The model is solved using an extended Branch and Cut algorithm that is implemented in the solver LaGO.  ...  Further, we thank two reviewers for their comments and helpful suggestions on an earlier version of this paper.  ... 
doi:10.1007/978-3-540-88965-6_9 fatcat:c754stn2x5gtneqojd75hxt65i

A modeler's guide to handle complexity in energy systems optimization [article]

Leander Kotzur, Lars Nolting, Maximilian Hoffmann, Theresa Groß, Andreas Smolenko, Jan Priesmann, Henrik Büsing, Robin Beer, Felix Kullmann, Bismark Singh, Aaron Praktiknjo, Detlef Stolten (+1 others)
2021 arXiv   pre-print
The determination of environmentally- and economically-optimal energy system designs and operations is complex.  ...  In consequence, energy system modelers must tackle the complexity of their models daily and introduce various methods to manipulate the underlying data and model structure, with the ultimate goal of finding  ...  performance. 2.3 Complexity in energy systems and energy system models In the following, we assess what drives the complexity of the original system and its simplifying model, where- by the definitions  ... 
arXiv:2009.07216v3 fatcat:lpl322ounfglperzpnmqbvrfha

Infinity Sensor: Temperature Sensing in GaN Power Devices using Peak di/dt

Jianjing Wang, Mohammad H. Hedayati, Dawei Liu, Salah-Eddine Adami, Harry C. P. Dymond, Jeremy J. O. Dalton, Bernard H. Stark
2018 2018 IEEE Energy Conversion Congress and Exposition (ECCE)  
To reach optimal/better conceptual designs of energy systems, key design variables should be optimized/adapted with system layouts, which may contribute significantly to system improvement.  ...  Therefore, this paper reviews progressively the methodologies of system evaluation, optimization, and synthesis for the conceptual design of energy systems, and highlights the applications to thermal power  ...  The algorithm can be further enhanced, as branch and cut, by introducing cutting planes (linear inequities) to tighten the lower bound of LP relaxations.  ... 
doi:10.1109/ecce.2018.8558287 fatcat:6dtqnvu3tjef5nih4jqtztot34

Optimal design of mixed AC–DC distribution systems for commercial buildings: A Nonconvex Generalized Benders Decomposition approach

Stephen M. Frank, Steffen Rebennack
2015 European Journal of Operational Research  
Partial replacement of AC distribution with DC distribution can improve service to DC loads and overall building energy efficiency.  ...  The results of three case studies demonstrate the strength of the decomposition approach compared to state-of-the-art general-purpose global solvers.  ...  mathematical programming problem 341 determines a set of optimal design decisions and the 342 associated system energy performance. 343 This article limits the scope of the mixed AC- 344  ... 
doi:10.1016/j.ejor.2014.10.008 fatcat:tg7kcfo2bzbkpa4tyi27scjrg4

Finding optimal hardware/software partitions

Zoltán Ádám Mann, András Orbán, Péter Arató
2007 Formal methods in system design  
They use the bound received by solving the LP-relaxation of the problem for cutting off unpromising branches of the search tree.  ...  However, as the systems to design have become more and more complex, this method has become infeasible, and many research efforts have been undertaken to automate partitioning as much as possible.  ...  Parallel to the growth in complexity of the systems to be designed, the time-to-market pressure is also increasing.  ... 
doi:10.1007/s10703-007-0039-0 fatcat:ewnxswemarerppewrbbjnpth2i

Configuration Optimization Model for Data-Center-Park-Integrated Energy Systems Under Economic, Reliability, and Environmental Considerations

Liu, Yu, Liu, Wang, Li
2020 Energies  
The analysis of energy configuration in the planning of data-center-park-integrated energy systems (DCP-IESs) has become an enormous challenge, owing to multi-energy complementarity, energy cascade use  ...  Then, the configuration model was modified according to the security of the proposed device switching logic, and the Markov-based reliability estimation method was used to ensure the redundant design of  ...  For the optimal design of energy system, in order to integrate multiple energy sources and increase renewable energy penetration, scholars mainly adopt three methods to optimize the design of energy system  ... 
doi:10.3390/en13020448 fatcat:3jzgamcnxrajzkrl62ri66lovq
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