Application of the Feedback Linearization in Maximum Power Point Tracking Control for Hydraulic Wind Turbine

Ai, Chao; Gao, Wei; Hu, Qinyu; Zhang, Yankang; Chen, Lijuan; Guo, Jingjie; Han, Zengrui

doi:10.3390/en13061529

Cited by 9 publications

(17 citation statements)

References 19 publications

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“…Therefore, theoretically, t feedback linearization theory is one of the most suitable theories to solve the control design problem of the buck-boost converter. However, not all nonlinear systems can linearized into a linear system by feedback, which needs complex operation proof [2 Nevertheless, the feedback linearization theory is still widely used in the power syste [26][27][28][29], power electronics [30,31], chemical industry [32,33], vehicles [34,35], and ae space [36,37].…”

Section: The Model Of the Buck-boost Convertermentioning

confidence: 99%

A Multi-Index Feedback Linearization Control for a Buck-Boost Converter

Chen

2021

Energies

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Due to the nonlinear and nonminimum phase characteristics of the buck-boost converter, the design of its controller has always been a challenging problem. In this paper, a multi-index feedback linearization control strategy is proposed to design the controller of the buck-boost converter. Firstly, by constructing an appropriate output function, the original nonlinear system is mapped into a combination of a linear subsystem and a nonlinear subsystem. Then, according to the structural characteristics of these two subsystems, the linear optimal control theory is adopted for the control design of the linear subsystem to make it have a good output performance, while for the nonlinear subsystem, the coefficient of the output function is adjusted to ensure its stability. Finally, based on the Hartman–Grobman theorem, the internal mechanism and coefficient adjustment basis of the proposed method are revealed; that is, by adjusting the coefficient of the output function and the feedback coefficient of the linear control law, the poles of the system are configured to achieve the purpose of adjusting the static and dynamic performance of the system. The simulation results show the feasibility and superiority of using the multi-index feedback linearization control strategy to design the nonlinear control law of the buck-boost converter.

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Section: The Model Of the Buck-boost Convertermentioning

confidence: 99%

A Multi-Index Feedback Linearization Control for a Buck-Boost Converter

Chen

2021

Energies

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“…A group of researchers from Yanshan University explored a series of control strategies and characteristic study about the wind turbine FPVM transmission system based on simulation model 65,66 and the 30 kW semi‐physical simulation 67 . They brought up a series of control strategy 68–77 . Also there are other researchers like Yang et al who studied the fuzzy control for the constant motor speed control 78 and an LMI‐based tracking control scheme to robust tower oscillation damping in a 5‐MW wind turbine 79 .…”

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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“…In this paper, we will investigate the maximum power point tracking (MPPT) control of the HWT. Research on the precise MPPT control of HWT aims to improve the energy efficiency that deals with randomness and fluctuation of wind and time‐varying nonlinearity in hydraulic systems 15 . An optimization strategy is proposed in Mulders et al, 16 which implemented extremum seeking control method to increase the maximum average power.…”

Section: Introductionmentioning

confidence: 99%

“…A digital hydrostatic transmission solution was introduced in the HWT to largely utilize the energy captured by the rotor, and the

normalk ω^{2}

control law combined with digital hydrostatic method was proposed to improve HWT energy production; that is, the rotor works in the best operating point through adjusting the rotor speed, without the wind speed information 22 . The HWT MPPT control is researched with the feedback linear method, but the influence of external disturbance and time variation of hydraulic parameters on control accuracy is not considered, and the stability of the controller has not been clearly demonstrated 23 …”

Section: Introductionmentioning

confidence: 99%

A novel collaborative control algorithm for maximum power point tracking of wind energy hydraulic conversion system

Chen,

Li,

Zhang

et al. 2023

Wind Energy

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Wind has been admitted as one of the most promising renewable energy resources in multinational regionalization policies. However, the energy conversion and utilization are challenging due to the technique reliability and cost issues. Hydraulic wind turbine (HWT) may solve the above problems. HWT is taken as a research object, and the maximum power point tracking (MPPT) control strategy is proposed collaborating with active disturbance rejection control (ADRC) and linear quadratic regulator (LQR) control methods, to solve multiplicative nonlinearity problems in the plant models and the influence of external disturbance on control performance in the MPPT control process. A nonlinear simulation model is built to explain the main findings from the experiments and obtain a better understanding of the effect of time‐varying system parameters and random fluctuation in wind speed. The collaborative control algorithm is experimentally verified on a 24‐kW HWT semi‐physical test platform that results in a promising energy conversion rate, plus the hydraulic parameters can satisfy the demand, accordingly. Ultimately, the potential challenges of implementing this technique in a smart wind energy conversion system are discussed to give a further design guidance, either theoretically or practically.

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Application of the Feedback Linearization in Maximum Power Point Tracking Control for Hydraulic Wind Turbine

Cited by 9 publications

References 19 publications

A Multi-Index Feedback Linearization Control for a Buck-Boost Converter

A Multi-Index Feedback Linearization Control for a Buck-Boost Converter

Review of the application of hydraulic technology in wind turbine

A novel collaborative control algorithm for maximum power point tracking of wind energy hydraulic conversion system

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