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Residue Theorem based soft sliding mode control for wind power generation systems

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Protection and Control of Modern Power Systems 2018年第1期3卷 256-267页

作者： Mohammed Alsumiri Liuying Li Lin Jiang Wenhu Tang University of Liverpool LiverpoolUK

This paper proposes a residue theorem based soft sliding mode control strategy for a permanent magnet synchronous generator(PMSG)based wind power generation system(WPGS),to achieve the maximum energy conversion and improved in the system dynamic *** main idea is to set a soft dynamic boundary for the controlled variables around a reference *** the controlled variables would lie on a point inside the *** convergence of the operating point is ensured by following the Forward Euler *** proposed control has been verified via simulation and experiments,compared with conventional sliding mode control(SMC)and proportional integral(PI)control.

关键词： Maximum power point tracking Sliding mode control Residue theorem Wind power generation system permanent magnet synchronous generator

Robust Variable-Pitch Control Design of PMSG Via Perturbation Observer

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Energy Engineering 2021年第4期118卷 911-929页

作者： Yilin Hu Yan Xie Bo Li Yiqiang Jiang Fu Bao Department of International Applied Technology Yibin UniversityYibin644000China School of Information and Communication Engineering Hainan UniversityHaikou570000China School of Physics and Information Engineering Zhaotong UniversityZhaotong657000China

Wind turbine employs pitch angle control to maintain captured power at its rated value when the wind speed is higher than rated *** work adopts a perturbation observer based sliding-mode control(POSMC)strategy to realize robust variable-pitch control of permanent magnet synchronous generator(PMSG).POSMC combines system nonlinearities,parametric uncertainties,unmodelled dynamics,and time-varying external disturbances into a perturbation,which aims to estimate the perturbation via a perturbation observer without an accurate system ***,sliding mode control(SMC)is designed to completely compensate perturbation estimation in real-time for the sake of achieving a global consistent control performance and improving system robustness under complicated *** results indicate that,compared with vector control(VC),feedback linearization control(FLC),and nonlinear adaptive control(NAC),POSMC has the best control performance in ramp wind and random wind and the highest robustness in terms of parameter ***,the integral absolute error index of!m of POSMC is only 11.69%,12.10%and 15.14%of that of VC,FLC and NAC in random wind speed.

关键词： Variable-pitch control permanent magnet synchronous generator perturbation observer

Control Design and Implementation of a Spiral Spring Energy Storage System Connected to a Grid via PMSG

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CSEE Journal of Power and Energy Systems 2018年第3期4卷 339-351页

作者： Yang Yu Zengqiang Mi Xudong Guo Xitong Niu Xiaojiang Zheng Chenjun Sun State Key Laboratory of Alternate Electrical Power Systems with Renewable Energy Sources North China Electric Power UniversityBaoding 071003China State Grid Hebei Maintenance Branch Shijiazhuang 050031China Commercial Aircraft Control Information Technology(Shanghai)Co. LtdShanghai 201108China State Grid Hebei Electric Power Company Shijiazhuang 050022China

For an innovative spiral spring energy storage system,the permanent magnet synchronous generator(PMSG)is utilized as the energy conversion device due to its simple structure,low weight and high *** power generation,the output torque and moment of inertia of the spiral spring are changing continuously and simultaneously and the parameters of the PMSG show ***,the DC link voltage of the converter should be stable and the power injected into the grid needs to be ***,the change features of the external power source and the uncertainties of the generator’s internal parameters are expressed as the comprehensive disturbances,which are introduced into the dynamic model of the PMSG and also modify the dynamic ***,the high gain observers are utilized to estimate the comprehensive disturbances,and an improved robust backstepping control scheme integrating L2 gain and high gain observers is ***,the gridside inverter controller for the DC voltage loop and reactive power loop is designed based on the backstepping ***,hardware implementation is fulfilled to verify the presented *** results show that high gain observers are able to accurately estimate the external and internal interferences;the proposed control scheme can effectively suppress the external and internal interferences and guarantees output current,operating speed of the PMSG and output reactive power to correctly track respective references,and effectively stabilize the DC link voltage.

关键词： Backstepping control high gain observer L2 gain permanent magnet synchronous generator spiral spring energy storage system

Multi-objective design optimization of a large-scale directdrive permanent magnet generator for wind energy conversion systems

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Frontiers in Energy 2014年第2期8卷 182-191页

作者： Arash Hasssanpour ISFAHANI Amirhossein Haji-Seyed BOROUJERDI Saeed HASANZADEH Everette Energy LLC Dallas 75225 USA Faculty of Electrical and Engineering Islamic Azad University Islamshahr Branch Tehran 33147-67653 Iran Facuty of Electrical and Computer Engineering Qom University of Technology Qom 1519-37195 Inan

This paper presents a simukaneous multi- objective optimization of a direct-drive permanent magnet synchronous generator and a three-blade horizontal-axis wind turbine for a large scale wind energy conversion system. Analytical models of the generator and the turbine are used along with the cost model for optimization. Three important characteristics of the system i.e.,the total cost of the generator and blades, the annual energy output and the total mass of generator and blades are chosen as objective functions for a multi-objective optimization. Genetic algorithm （GA） is then employed to optimize the value of eight design parameters including seven generator parameters and a turbine parameter resulting in a set of Pareto optimal solutions. Four optimal solutions are then selected by applying some practical restrictions on the Pareto front. One of these optimal designs is chosen for finite element verification. A circuit-fed coupled time stepping finite element method is then performed to evaluate the no-load and the full load performance analysis of the system including the generator, a rectifier and a resistive load. The results obtained by the finite element analysis （FEA） verify the accuracy of the analytical model and the proposed method.

关键词： permanent magnet synchronous generator wind turbine direct-drive multi-objective optimization,

Control-Based Stabilization of DC Microgrid for More Electric Aircraft

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第5期38卷 737-746页

作者： YANG Jiajun BUTICCHI Giampaolo GU Chunyang WHEELER Pat ZHANG He GERADA Chris Key Laboratory of More Electric Aircraft Technology of Zhejiang Province University of Nottingham Ningbo ChinaNingbo 315000P.R.China Power Electronics Machines and Control GroupUniversity of NottinghamNottingham NG72RDU.K.

Electrifying the on-board subsystems of aircraft becomes an inevitable process as being faced with the environmental pollution,along with the proposed concept called more electric aircraft(MEA).With the increasing number of on-board power electronic based devices,the distribution system of the aircraft can be regarded as an onboard *** it is known that the load power electronic converters can exhibit constant power load(CPL)characteristics and reduce the system stability,it is necessary to accurately predict and enhance the system stability in designing *** paper firstly analyzes the stability of an on-board DC microgrid with the presence of ***,discusses the reasons behind instability and proposes a control strategy to enhance system ***,the simulation results are worked out to validate the analysis and the effect of the proposed control strategy.

关键词： DC microgrid stability analysis impedance model constant power load more electric aircraft dual active bridge converter permanent magnet synchronous generator

A Fuzzy Logical MPPT Control Strategy for PMSG Wind Generation Systems

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Journal of Electronic Science and Technology 2013年第1期11卷 72-77页

作者： Xing-Peng Li Wen-Lu Fu Qing-Jun Shi Jian-Bing Xu Quan-Yuan Jiang the College of Electrical Engineering Zhejiang University Chongqing Changshou Power Supply Bureau

Making full use of wind power is one of the main purposes of the wind turbine generator control. Conventional hill climbing search （HCS） method can realize the maximum power point tracking （MPPT）. However, the step size of HCS method is constant so that it cannot consider both steady-state response and dynamic response. A fuzzy logical control （FLC） algorithm is proposed to solve this problem in this paper, which can track the maximum power point （MPP） quickly and smoothly. To evaluate MPPT algorithms, four performance indices are also proposed in this paper. They are the energy captured by wind turbine, the maximum power-point tracking time when wind speed changes slowly, the fluctuation magnitude of real power during steady state, and the energy captured by wind turbine when wind speed changes fast. Three cases are designed and simulated in MATLAB/Simulink respectively. The comparison of the three MPPT strategies concludes that the proposed fuzzy logical control algorithm is more superior to the conventional HCS algorithms.

关键词： Fuzzy logical control hill climbing search maximum power point tracking permanent magnet synchronous generator wind generation system.

Enhancement of DC-Link Protection of PMSG Based Wind Turbine under Network Disturbance by Using New Buck Controller System

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Journal of Mechanics Engineering and Automation 2017年第4期7卷 171-179页

作者： Linda Sartika Atsushi Umemura Rion Takahashi Junji Tamura Department of Electrical and Electronic Engineering Kitami Institute of Technology (KIT) Hokkaido 090-8507 Japan

Protection system for DC-link circuit of back-to-back converter of PMSG （permanent magnet synchronous generator） based wind turbine is essential part for the system to ride through a network fault in grid system. Voltage on the DC-link circuit can be increased significantly due to power unbalance between stator side converter and grid side converter. Increase of DC-link circuit voltage can lead to a damage of IGBT of the converter and control system failure. In this paper performance enhancement of DC-link protection of PMSG based Wind turbine by using new control system of buck converter is proposed. The buck converter is used to control supplied voltage of a breaking resistor to dissipate energy from the wind generator during network disturbance. In order to investigate effectiveness of the proposed DC-link protection system, fault analysis is performed in the simulation study by using PSCAD/EMTDC software program. In addition, comparative analysis between the proposed protection system and the conventional protection system using DC chopper is also performed.

关键词： Wind farm variable speed wind turbine permanent magnet synchronous generator buck controller.

A Model-compensation ADRC strategy of Wind Energy Conversion System with Direct-Driven PMSG

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A Model-compensation ADRC strategy of Wind Energy Conversion...

MPPT Control Based Fuzzy for Wind Energy Generating System

第37届中国控制会议

作者： Mengying Cao Shengquan Li Juan Li Yuanwang Wu Hongbing Sun School of Hydraulic Energy and Power Engineering Yangzhou University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Southeast University

This paper proposed two strategies based on the active disturbance synchronous controller（ADRC） designed for the WECS based on the direct-driven PMSG, which maximize the power output by tacking the optimal tip-speed ratio in real time. Since the direct-driven PMSG is a nonlinear system with a large amount of uncertainties and rapid dynamic variations, it is difficult to execute the model-based control designs. Considering these characteristics of the system, a basic ADRC strategy is proposed, which has a good performance without a detailed mathematical model of the system. Furthermore, considering the large changes in system dynamics and disturbances may substantially degrade the performance of WECS, a model-compensation ADRC strategy is presented, which incorporate the available model information into an extended state observer（ESO） to compensate the lumped disturbance efficiently. Simulation results show that, compared with the traditional ADRC strategy, the proposed ADRC has a stronger robustness against uncertain dynamics and external disturbances.

关键词： Wind energy conversion system permanent magnet synchronous generator Maximum power tracking Active disturbance rejection controller Model-compensation

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MPPT Control Based Fuzzy for Wind Energy Generating System