Energy storage techniques for hydraulic wind power systems

Vaezi, Masoud; Izadian, Afshin

doi:10.1109/icrera.2014.7016514

Cited by 8 publications

(5 citation statements)

References 28 publications

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“…The researchers did a lot of work at this concept, including a model‐based control strategy for the motor A constant speed (at the beginning, there is no motor B but a pipeline) 92 built the complete system model (two motors) 93–96 . Internal Model Control‐Proportional Integral Derivative (IMC‐PID) control strategy to maintain the generator speed 97 and the corresponding storage method “Compressed Air Energy Storage (CAES)” shown as Figure 22 98 …”

Section: The Hydraulic Technology Applications In Wind Turbinementioning

confidence: 99%

Review of the application of hydraulic technology in wind turbine

et al. 2020

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With the development of large-scale wind power generation and offshore wind energy, reducing the nacelle weight and the gear failure rate is increasingly important.Hydraulic transmission is characterized by its flexible layout and transmits large energy with small volume and weight, which suits the demands of wind power generation. In this paper, a thorough review of hydraulic technology application in wind energy is carried out, in the aspect of pitch, brake, yaw, transmission, new applications, and the potential problems. K E Y W O R D S hydraulic brake, hydraulic pitch, hydraulic transmission, hydraulic yaw, new applications, wind energy 1 | INTRODUCTIONHydraulic transmission applied to wind energy is not a new concept, and early works by JERICO 1 showed that a lack of component availability is the main factor hindering its implementation. Some commercial wind turbines are equipped with hydraulic pitch or yaw mechanism, but after several years, oil leakages affected the turbine exterior and the control performance forcing the reuse of electrical systems. With the development of hydraulic components and the growing size of wind power generation, hydraulic technology has gradually been applied in wind energy, such as the hydraulic pitch system 2 listed in Table 1, the hydraulic braking system, 3 and hydraulic transmission system 4,5 depicted in Table 2. With the development of hydraulic components and offshore wind energy (which has been estimated by the MAKE to be a 3.9GW grid capacity in 2018), hydraulic wind turbine will find its new development.In this paper, an overall review of the hydraulic technology applied in wind energy, including the hydraulic structure and the corresponding control strategy, is carried out. The article is structured as follows: In the first section, hydraulic technology and wind energy basic situation are mainly introduced, especially their potential binding points. In the second section, the hydraulic application in the pitch, brake, yaw, transmission between the rotor and the generator, and other novel application are mainly described. In the third section, a review about the hydraulic components studied specially for wind energy is made. In the fourth section, the deficiency and advantage of hydraulic energy applied in wind energy and the application prospect are discussed.

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Section: The Hydraulic Technology Applications In Wind Turbinementioning

confidence: 99%

Review of the application of hydraulic technology in wind turbine

et al. 2020

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“…A wind turbine powertrain that relies on hydraulic machinery could provide a decoupled transmission system. Many studies have been conducted on different HTSs and use this property to employ a conventional synchronous generator (SG) and eliminate the power converters [20][21][22][23][24][25][26][27][28][29][30]. In these studies, two strategies are applied to maintain the SG at synchronous speed with a small allowed variation and subsequently control the frequency: first, relying on the damping factor of the SG [20][21][22][23], and second, inserting an energy buffer between the wind turbine and SG [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been conducted on different HTSs and use this property to employ a conventional synchronous generator (SG) and eliminate the power converters [20][21][22][23][24][25][26][27][28][29][30]. In these studies, two strategies are applied to maintain the SG at synchronous speed with a small allowed variation and subsequently control the frequency: first, relying on the damping factor of the SG [20][21][22][23], and second, inserting an energy buffer between the wind turbine and SG [24][25][26][27][28][29]. The former strategies can further reduce the efficiency of the synchronous generator due to the ever-changing nature of wind speed, and the latter necessitates the application of other extra subassemblies.…”

Section: Introductionmentioning

confidence: 99%

Quasi Self-Excited DFIG-Based Wind Energy Conversion System

Akbari

Izadian

Weissbach

2021

IEEE Trans. on Ind. Applicat.

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This paper introduces a new configuration of the DFIG-based wind energy conversion system (WECS) employing only a reduced-size Rotor Side Converter (RSC) in tandem with a supercapacitor. In the proposed structure, the Grid Side Converter (GSC) utilized in conventional DFIG-based WECSs is successfully eliminated. This is accomplished by employing the hydraulic transmission system (HTS) as a continuously variable and shaft decoupling transmission unit. This transforms the conventional constant-ratio drives by providing an opportunity to control the power flow through the generator's rotor circuit regardless of the wind turbine's shaft speed. This feature of HTS can be utilized to control the RSC power and ultimately regulate the supercapacitor voltage without a need for GSC. The proposed system is investigated and simulated in MATLAB Simulink at various wind speeds to validate the results and demonstrate the dynamic performance of the system.

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“…The utilization of a storage system is a better solution to reduce or alleviate these problems. The wind energy storage can not only solve the problem of randomness and volatility of the wind power, but also has the function of peak regulation and frequency modulation, which can greatly improve the reliability and economic efficiency of the power system [17][18][19]. In 2009, the Scottish Artemis Intelligent Power company applied a new digital hydraulic variable pump to the 1.5 MW hydraulic variable speed wind turbine aimed at storing wind energy and obtaining higher efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Dynamic Characteristics of a 600 kW Storage Type Wind Turbine with Hybrid Hydraulic Transmission

et al. 2019

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In order to improve the efficiency and convenience of wind energy storage and solve the reproducibility of the hydraulic wind turbine, we present a storage type wind turbine with an innovative hybrid hydraulic transmission, which was adopted in the development of a 600 kW storage type wind turbine experimental platform. The whole hydraulic system of the storage type wind turbine is mainly an ingenious combination of a closed loop transmission and an open loop one, which can also be divided into three parts: hydraulic variable speed, hydraulic energy storage, power generation. For the study focusing on the capture and storage of wind energy, the mathematical model of the wind turbine except for the power generation was established under MATLAB/Simulink. A double closed loop control strategy is proposed to achieve the wind wheel speed regulation and wind energy storage. The dynamic simulations of the 600 kW storage type wind turbine experimental prototype were carried out under two different input signals. The results show that the wind wheel speed achieves the desired value at fast response and high precision using the control method given in this paper, and the proposed new storage type wind turbine is reasonable and practical.

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Energy storage techniques for hydraulic wind power systems

Cited by 8 publications

References 28 publications

Review of the application of hydraulic technology in wind turbine

Review of the application of hydraulic technology in wind turbine

Quasi Self-Excited DFIG-Based Wind Energy Conversion System

Analysis of Dynamic Characteristics of a 600 kW Storage Type Wind Turbine with Hybrid Hydraulic Transmission

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