Modeling and control of an open accumulator Compressed Air Energy Storage (CAES) system for wind turbines

2015 ◽  
Vol 137 ◽  
pp. 603-616 ◽  
Author(s):  
Mohsen Saadat ◽  
Farzad A. Shirazi ◽  
Perry Y. Li
Keyword(s):  
Energy Storage ◽  
Wind Turbines ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Modeling And Control ◽  
And Control

Design Modeling and Control of a Lab-Scale Compressed Air Energy Storage (CAES) Testbed for Wind Turbines With Simulated Input and Demand Power Variability

2014 ◽  
Author(s):  
Farzad A. Shirazi ◽  
Pieter Gagnon ◽  
Perry Y. Li ◽  
James D. Van de Ven
Keyword(s):  
Energy Storage ◽  
Wind Turbines ◽  
Control Valve ◽  
Compressed Air ◽  
Offshore Wind ◽  
Hydraulic Control ◽  
Compressed Air Energy Storage ◽  
Test Bed ◽  
Modeling And Control ◽  
Power Disturbances

A Compressed Air Energy Storage (CAES) test-bed has been developed to experimentally demonstrate the energy storage concept proposed in [1] for offshore wind turbines. The design of the testbed has been adapted to the available air compression/expansion technology. The main components of the system consist of an open accumulator, a hydraulic pumpmotor, air compressor/expander, an electrical generator and load, a differential gearbox and a hydraulic control valve. These components are first characterized and then a dynamic model of the system has been developed. The objective is to regulate the output current/voltage of the generator while maintaining a constant accumulator pressure in the presence of input and demand power variations in the system. This is achieved by Proportional-Integrator (PI) control of pumpmotor displacement and field current of the generator. The stability of these controllers has been proved using an energy-based Lyapunov function. Experimental results for storage and regeneration modes have been presented showing excellent performance of the system in response to power disturbances.

Modelling and control of advanced adiabatic compressed air energy storage under power tracking mode considering off-design generating conditions

Energy ◽  
2021 ◽  
Vol 218 ◽  
pp. 119525
Author(s):  
Jiayu Bai ◽  
Feng Liu ◽  
Xiaodai Xue ◽  
Wei Wei ◽  
Laijun Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Tracking Mode ◽  
And Control

scholarly journals INTEGRATION OF WIND TURBINES WITH COMPRESSED AIR ENERGY STORAGE

2009 ◽  
Author(s):  
I. Arsie ◽  
V. Marano ◽  
G. Rizzo ◽  
M. Moran ◽  
Abdul Halim Hakim ◽  
...  
Keyword(s):  
Energy Storage ◽  
Wind Turbines ◽  
Compressed Air ◽  
Compressed Air Energy Storage

Modelling the Dynamic Response and Loads of Floating Offshore Wind Turbine Structures With Integrated Compressed Air Energy Storage

2017 ◽  
Author(s):  
Tonio Sant ◽  
Daniel Buhagiar ◽  
Robert N. Farrugia
Keyword(s):  
Energy Storage ◽  
Dynamic Response ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Compressed Air ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Compressed Air Energy Storage ◽  
Floating Offshore Wind Turbine ◽  
The Impact

Nowadays there is increased interest to incorporate energy storage technologies with wind turbines to mitigate grid-related challenges resulting from the intermittent supply from large-scale offshore wind farms. This paper presents a new concept to integrate compressed air energy storage (CAES) in floating offshore wind turbine (FOWT) structures. The FOWT support structures will serve a dual purpose: to provide the necessary buoyancy to maintain the entire wind turbine afloat and stable under different met-ocean conditions and to act as a pressure vessel for compressed air energy storage on site. The proposed concept involves a hydro-pneumatic accumulator installed on the seabed to store pressurized deep sea water that is pneumatically connected to the floating support structure by means of an umbilical conduit. The present study investigates the technical feasibility of this concept when integrated in tension leg platforms (TLPs). The focus is on the impact of the additional floating platform weight resulting from the CAES on the dynamic response characteristics and loads when exposed to irregular waves. A simplified model for sizing the TLP hull for different energy storage capacities is initially presented. This is then used to evaluate the dynamic response of nine different TLP geometries when supporting the NREL1 5MW baseline wind turbine model. Numerical simulations are carried out using the marine engineering software tool ANSYS Aqwa©. The work provides an insight on how TLP structures supporting wind turbines may be optimised to facilitate the integration of the proposed CAES concept. It is shown that it is technically feasible to integrate CAES capacities on the order of Megawatt-Hours within TLP structures without compromising the stability of the floating system; although this would involve a substantial increase in the total structure weight.

Energy and Economic Evaluation of a Hybrid Power Plant With Wind Turbines and Compressed Air Energy Storage

2006 ◽  
Author(s):  
I. Arsie ◽  
V. Marano ◽  
G. Rizzo ◽  
M. Moran
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Wind Turbines ◽  
Power Plants ◽  
Wind Farm ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Hybrid Power ◽  
Study Results ◽  
Hybrid Power Plant

A model of a Hybrid Power Plant (HPP) consisting of Compressed Air Energy Storage (CAES) coupled with a wind farm is presented. This kind of plant aims at overcoming some of the major limitations of wind-generated power plants, including low power density and an intermittent nature owing to variable weather conditions. In CAES, energy is stored in the form of compressed air in a reservoir during off-peak periods and used on demand during peak periods to generate power with a turbo-generator system. Such plants can offer significant benefits in terms of flexibility in matching a fluctuating power demand, particularly when coupled with wind turbines. For the hybrid power plant considered in this study, results show that advantages in terms of economics, energy savings and CO2 mitigation can be achieved.

Combined Optimal Design and Control of a Near Isothermal Liquid Piston Air Compressor/Expander for a Compressed Air Energy Storage (CAES) System for Wind Turbines

2015 ◽  
Author(s):  
Mohsen Saadat ◽  
Perry Y. Li
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Expansion Chamber ◽  
Trade Off ◽  
Air Compressor ◽  
Energy Storage Technology ◽  
And Control ◽  
Liquid Piston

The key component of Compressed Air Energy Storage (CAES) system is an air compressor/expander. The roundtrip efficiency of this energy storage technology depends greatly on the efficiency of the air compressor/expander. There is a trade off between the thermal efficiency and power density of this component. Different ideas and approaches were introduced and studied in the previous works to improve this trade off by enhancing the heat transfer between air and its environment. In the present work, a combination of optimal compression/expansion rate, optimal chamber shape and optimal heat exchanger material distribution in the chamber is considered to maximize the power density of a compression/expansion chamber for a given desired efficiency. Results show that the power density can be improved by more than 20 folds if the optimal combination of flow rate, shape and porosity are used together.

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