Modeling and Management of Batteries and Ultracapacitors for Renewable Energy Support in Electric Power Systems–An Overview

Hamidi, Seyed Ahmad; Ionel, Dan M.; Nasiri, Adel

doi:10.1080/15325008.2015.1038757

Cited by 47 publications

(12 citation statements)

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“…The OWC concept utilizes a water column inside a partially submerged hollow concrete structure. With the incident wave, the OWC inside the chamber oscillates the air column above it and results in mismatch between the supply and demand power [9]. Several types of such converters have been presented in [9], which can be used as energy storage interface systems.…”

Section: Introductionmentioning

confidence: 99%

“…The ESS absorbs power pulses to provide smooth power delivery to the grid. A comprehensive review of ESSs in renewable energy electric power systems is presented in [9]. Hamidi et al [9] have discussed different types of batteries, supercapacitors, and hybrid energy storage system (HESS) along with their modeling techniques.…”

mentioning

confidence: 99%

“…A comprehensive review of ESSs in renewable energy electric power systems is presented in [9]. Hamidi et al [9] have discussed different types of batteries, supercapacitors, and hybrid energy storage system (HESS) along with their modeling techniques. They have also highlighted different utility-level power converter topologies and given six examples of ESSs in field installations.…”

mentioning

confidence: 99%

“…While the rectifier and inverter controllers proposed in [15] can still be used, the dc-dc converter requires an additional converter.The use of dc-dc bidirectional converters with energy storage, such as a battery and/or supercapacitor are common in utility-level renewable energy systems, which act fast to reduce the mismatch between the supply and demand power [9]. Several types of such converters have been presented in [9], which can be used as energy storage interface systems. The half bridge (HB)-type converters are more effective than many other types as they use a lower number of passive electronics, smaller inductors, and experience lower current stresses.…”

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Grid Integration and Power Smoothing of an Oscillating Water Column Wave Energy Converter

et al. 2018

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This paper applies model predictive control (MPC) for the power processing of an oscillating water column (OWC) wave energy conversion (WEC) system to achieve smooth power delivery to the grid. The particular air turbine design adopted in this study produces large power pulses ranging from 0 to 1 MW in magnitude, and thus, direct connection to the grid is practically impossible, especially in weak grid conditions. Therefore, energy storage is an essential element that should be integrated into this particular WEC system in order to absorb power pulses and thereby ensure smooth delivery of power to the grid. Taking into account the repetitive nature, duration, and magnitude of the power pulses, this study has chosen "supercapacitor" as the suitable energy storage technology. The supercapacitor energy storage (SCES) is integrated into the dc-link of the back-to-back power converter of the WEC system through a bidirectional dc-dc converter. In order to achieve the desired operation of this complex power converter arrangement, a finite control set MPC strategy is proposed in this paper. Performance of the proposed energy storage system (ESS) and control strategy are evaluated through computer simulations. Simulation results show that the proposed SCES system and the control strategy are able to achieve smooth power delivery to the grid amidst power pulses coming from the generator. exhale and inhale air streams through the open end of the chamber. Energy of the air stream is then converted into electricity with the aid of a turbine coupled generator. The commonly used turbines are bidirectional which extract energy from both the inhale and exhale streams.The Australian maritime college, in collaboration with the Wave Swell Energy Ltd., has developed a new OWC air turbine technology, which has been recognized as an efficient and simple design compared with many other OWC technologies [6,7]. This particular configuration has passive, non-return air flow valves built into its chamber, which activate during the exhale stage and equalize the pressure inside the chamber to the atmosphere, which allows the rising water column to reach its maximum height. This creates a higher differential pressure during the inhale stage resulting in high velocity air stream through the turbine. Since this particular air turbine extracts energy only during the inhale stage, the output power inherently becomes discrete pulses. These large and discrete power pulses create major operational issues, such as frequency deviations, voltage sags/swells, and instabilities if delivered to the grid without smoothing. Therefore, energy storage is an essential feature that should be incorporated into the power converter of the WEC system. Nevertheless, in contrast to wind energy or tidal energy turbines, where the rotational speed should be changed according to the wind speed or tidal flow speed, the unidirectional air-turbine used in this study does not necessarily require variable speed operation. Therefore, according to [8], the turbine speed can be ...

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Grid Integration and Power Smoothing of an Oscillating Water Column Wave Energy Converter

et al. 2018

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“…Thus, for such cases, SBS can be used as a buffer which will considerably reduce power output variability along with improving stability and reliability [11][12][13]. In addition, SBS can also provide other benefits for utilities, including peak load management, load-shifting applications (peak shaving and valley filling), voltage regulation and power quality improvement [14].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Machine-Learning Approaches for Modeling the Charging/Discharging Proﬁles of Stationary Battery Systems with Non-Uniform Cell Aging

et al. 2017

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Abstract:The number of Stationary Battery Systems (SBS) connected to various power distribution networks across the world has increased drastically. The increase in the integration of renewable energy sources is one of the major contributors to the increase in the number of SBS. SBS are also used in other applications such as peak load management, load-shifting, voltage regulation and power quality improvement. Accurately modeling the charging/discharging characteristics of such SBS at various instances (charging/discharging profile) is vital for many applications. Capacity loss due to the aging of the batteries is an important factor to be considered for estimating the charging/discharging profile of SBS more accurately. Empirical modeling is a common approach used in the literature for estimating capacity loss, which is further used for estimating the charging/discharging profiles of SBS. However, in the case of SBS used for renewable integration and other grid related applications, machine-learning (ML) based models provide extreme flexibility and require minimal resources for implementation. The models can even leverage existing smart meter data to estimate the charging/discharging profile of SBS. In this paper, an analysis on the performance of different ML approaches that can be applied for lithium iron phosphate battery systems and vanadium redox flow battery systems used as SBS is presented for the scenarios where the aging of individual cells is non-uniform.

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Techno‐Economic Analysis of Hybrid Renewable Energy System with Energy Storage for Rural Electrification

Sahu

Jena

Sahoo

2021

Hybrid Renewable Energy Systems

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Modeling and Management of Batteries and Ultracapacitors for Renewable Energy Support in Electric Power Systems–An Overview

Cited by 47 publications

References 100 publications

Grid Integration and Power Smoothing of an Oscillating Water Column Wave Energy Converter

Grid Integration and Power Smoothing of an Oscillating Water Column Wave Energy Converter

Performance Analysis of Machine-Learning Approaches for Modeling the Charging/Discharging Proﬁles of Stationary Battery Systems with Non-Uniform Cell Aging

Techno‐Economic Analysis of Hybrid Renewable Energy System with Energy Storage for Rural Electrification

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