An approach to optimally allocate energy storage in naval electric ships

Chan, Ricky; Sudhoff, Scott D.; Zivi, E.

doi:10.1109/ests.2011.5770905

Cited by 12 publications

(4 citation statements)

References 7 publications

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“…Load dynamics can exceed the ramp rating of generators, so energy storage devices are often added to serve fast loads. Their specifications are critical considerations [3]- [5]. Hybrids of multiple storage technologies can handle both fast and slow power demands, and their physical location affects both performance and resiliency.…”

Section: A Motivationmentioning

confidence: 99%

Upper Bound Performance of Shipboard Power and Energy Systems for Early-Stage Design

Sinsley

Opila

et al. 2020

IEEE Access

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Shipboard power systems that service large-scale dynamic loads and electric propulsion can significantly improve their performance by adding controllable energy storage. These systems require power management controls that consider dynamics like generator ramp rates, along with energy storage capacity and location. In the early-stage design process, many alternative designs are considered, and each requires a unique controller. This paper describes a numerical optimization technique that establishes an upper bound performance criteria without manually designing controllers for each system. The solution is a best case performance that assumes perfect future knowledge of the time-varying load. While unrealistic in real-time, this technique yields a fair comparison between competing architectures without the variability of different control methods. To demonstrate the concept, a notional multi-bus power system architecture is evaluated on a representative set of operational duties to illustrate comparisons between system attributes like energy storage power and efficiency ratings. A design trade study shows that the success rate for a baseline ship can improve from under 60% to nearly 100% by increasing generator power by 10% and energy storage capacity by 100%. These automated architecture benchmarks fit into a broader total ship optimization process, or can be used in human-driven trade studies. INDEX TERMS Electric ship, energy storage, power flow, power system optimization, power management, pulse loads, power system control, ship design.

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Section: A Motivationmentioning

confidence: 99%

Upper Bound Performance of Shipboard Power and Energy Systems for Early-Stage Design

Sinsley

Opila

et al. 2020

IEEE Access

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“…2. The challenge to this approach is to ensure that any gains achieved in reducing the total amount of ES will not be offset by either a reduction in mission capability (because reliable power was not provided to the load at the moment it was needed) or by growing the power distribution system infrastructure to a point where it becomes equivalent to the solution without shared ES [10].…”

Section: ) Electrical Distance-local Vs Remotementioning

confidence: 99%

Analysis of experimental rapid power transfer and fault performance in DC naval power systems

Steurer

Bosworth

Soto

et al. 2015

2015 IEEE Electric Ship Technologies Symposium (ESTS)

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This paper first puts the challenges from design constraints imposed by mission load requirements on future naval surface combatants into context. Moreover, it provides results from experiments at the three partner universities designed to de-risk emerging medium voltage DC (MVDC) technology based systems and to provide validated models for future systems studies. These experiments are carries out in three recently established test beds all designed for MVDC related work. The investigations specifically targeted two major areas of interest: fault management and rapid power transfer between loads and sources. The results obtained to date reveal valuable insight into both areas.

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“…Neglect of IEP electrical dynamics has proven very useful for early-stage design space exploration [4], [7]. Herein, two significant shortcomings associated with previous methods for modeling the IEP in this manner are described.…”

Section: Introductionmentioning

confidence: 99%

Shipboard electrical system modeling for early-stage design space exploration

Cramer

Chen

Zivi

2013

2013 IEEE Electric Ship Technologies Symposium (ESTS)

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In early-stage design exploration, it has been found that electrical dynamics do not significantly affect the dependability of an integrated engineering plant. Therefore, it has been found useful to neglect these electrical dynamics and focus on mechanical, thermal, and fluidic dynamics in assessing system performance. Previous methods of accomplishing this goal involve the use of linear programming to describe the behavior of the electrical system. Herein, two significant shortcomings of the existing linear programming methods are identified, and a method of representing the electrical system that addresses these shortcomings is proposed. The proposed method is demonstrated in several system studies.

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An approach to optimally allocate energy storage in naval electric ships

Cited by 12 publications

References 7 publications

Upper Bound Performance of Shipboard Power and Energy Systems for Early-Stage Design

Upper Bound Performance of Shipboard Power and Energy Systems for Early-Stage Design

Analysis of experimental rapid power transfer and fault performance in DC naval power systems

Shipboard electrical system modeling for early-stage design space exploration

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