Suspension design of a semi-submersible platform

Hongzhong Zhu, Changhong Hu, Yingyi Liu, Kangping Liao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With the development of ocean energy exploration, reliable and low cost semi-submersible platforms are expected to develop. The maximum pitching amplitude of a floater for floating offshore wind turbine should be less than a few degrees to avoid fatigue failure. In this paper, a novel conceptual design of a new type semi-submersible with suspensions for suppressing the pitch motion is presented. Many wave energy dissipation devices, such as add-onwave energy converters to a floating platform, could be regarded as the suspension system in our design. Firstly, linear models are applied to approximate the radiation forces and wave exciting forces so that the whole motion system is represented by a state-space model. Then, we show that design of suspensions leads to synthesize a controller via solving a constrained H∞ optimization problem. Finally, numerical examples are performed to verify the design and it can be shown that the pitch motion of the semi-submersible platform is remarkably reduced.

Original languageEnglish
Title of host publicationOcean Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791849989
DOIs
Publication statusPublished - Jan 1 2016
EventASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016 - Busan, Korea, Republic of
Duration: Jun 19 2016Jun 24 2016

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume7

Other

OtherASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016
CountryKorea, Republic of
CityBusan
Period6/19/166/24/16

Fingerprint

Semisubmersibles
Offshore wind turbines
Conceptual design
Energy dissipation
Fatigue of materials
Radiation
Controllers
Costs

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Cite this

Zhu, H., Hu, C., Liu, Y., & Liao, K. (2016). Suspension design of a semi-submersible platform. In Ocean Engineering (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 7). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2016-54347

Suspension design of a semi-submersible platform. / Zhu, Hongzhong; Hu, Changhong; Liu, Yingyi; Liao, Kangping.

Ocean Engineering. American Society of Mechanical Engineers (ASME), 2016. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 7).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhu, H, Hu, C, Liu, Y & Liao, K 2016, Suspension design of a semi-submersible platform. in Ocean Engineering. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, vol. 7, American Society of Mechanical Engineers (ASME), ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016, Busan, Korea, Republic of, 6/19/16. https://doi.org/10.1115/OMAE2016-54347
Zhu H, Hu C, Liu Y, Liao K. Suspension design of a semi-submersible platform. In Ocean Engineering. American Society of Mechanical Engineers (ASME). 2016. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE). https://doi.org/10.1115/OMAE2016-54347
Zhu, Hongzhong ; Hu, Changhong ; Liu, Yingyi ; Liao, Kangping. / Suspension design of a semi-submersible platform. Ocean Engineering. American Society of Mechanical Engineers (ASME), 2016. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).
@inproceedings{ed6a15e060f34eb3b2d9f88a0d046cbc,
title = "Suspension design of a semi-submersible platform",
abstract = "With the development of ocean energy exploration, reliable and low cost semi-submersible platforms are expected to develop. The maximum pitching amplitude of a floater for floating offshore wind turbine should be less than a few degrees to avoid fatigue failure. In this paper, a novel conceptual design of a new type semi-submersible with suspensions for suppressing the pitch motion is presented. Many wave energy dissipation devices, such as add-onwave energy converters to a floating platform, could be regarded as the suspension system in our design. Firstly, linear models are applied to approximate the radiation forces and wave exciting forces so that the whole motion system is represented by a state-space model. Then, we show that design of suspensions leads to synthesize a controller via solving a constrained H∞ optimization problem. Finally, numerical examples are performed to verify the design and it can be shown that the pitch motion of the semi-submersible platform is remarkably reduced.",
author = "Hongzhong Zhu and Changhong Hu and Yingyi Liu and Kangping Liao",
year = "2016",
month = "1",
day = "1",
doi = "10.1115/OMAE2016-54347",
language = "English",
series = "Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Ocean Engineering",

}

TY - GEN

T1 - Suspension design of a semi-submersible platform

AU - Zhu, Hongzhong

AU - Hu, Changhong

AU - Liu, Yingyi

AU - Liao, Kangping

PY - 2016/1/1

Y1 - 2016/1/1

N2 - With the development of ocean energy exploration, reliable and low cost semi-submersible platforms are expected to develop. The maximum pitching amplitude of a floater for floating offshore wind turbine should be less than a few degrees to avoid fatigue failure. In this paper, a novel conceptual design of a new type semi-submersible with suspensions for suppressing the pitch motion is presented. Many wave energy dissipation devices, such as add-onwave energy converters to a floating platform, could be regarded as the suspension system in our design. Firstly, linear models are applied to approximate the radiation forces and wave exciting forces so that the whole motion system is represented by a state-space model. Then, we show that design of suspensions leads to synthesize a controller via solving a constrained H∞ optimization problem. Finally, numerical examples are performed to verify the design and it can be shown that the pitch motion of the semi-submersible platform is remarkably reduced.

AB - With the development of ocean energy exploration, reliable and low cost semi-submersible platforms are expected to develop. The maximum pitching amplitude of a floater for floating offshore wind turbine should be less than a few degrees to avoid fatigue failure. In this paper, a novel conceptual design of a new type semi-submersible with suspensions for suppressing the pitch motion is presented. Many wave energy dissipation devices, such as add-onwave energy converters to a floating platform, could be regarded as the suspension system in our design. Firstly, linear models are applied to approximate the radiation forces and wave exciting forces so that the whole motion system is represented by a state-space model. Then, we show that design of suspensions leads to synthesize a controller via solving a constrained H∞ optimization problem. Finally, numerical examples are performed to verify the design and it can be shown that the pitch motion of the semi-submersible platform is remarkably reduced.

UR - http://www.scopus.com/inward/record.url?scp=84996538342&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84996538342&partnerID=8YFLogxK

U2 - 10.1115/OMAE2016-54347

DO - 10.1115/OMAE2016-54347

M3 - Conference contribution

T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

BT - Ocean Engineering

PB - American Society of Mechanical Engineers (ASME)

ER -