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Design of Adaptive Robust Guaranteed Cost Controller for wind power generator

International Journal of Automation and computing 2013年第2期10卷 111-117页

作者： Zhong-Qiang Wu Jian-Ping Xie Key Laboratory of Industrial Computer Control Engineering Yanshan University

According to the increasing requirement of the wind energy utilization and the dynamic stability in the variable speed variable pitch wind power generation system, a linear parameter varying （LPV） system model is established and a new adaptive robust guaranteed cost controller （AGCC） is proposed in this paper. First, the uncertain parameters of the system are estimated by using the adaptive method, then the estimated uncertain parameters and robust guaranteed cost control method are used to design a state feedback controller. The controller s feedback gain is obtained by solving a set of linear matrix inequality （LMI） constraints, such that the controller can meet a quadratic performance evaluation criterion. The simulation results show that we can realize the goal of maximum wind energy capture in low wind speed by the optimal torque control and constant power control in high wind speed by variable pitch control with good dynamic characteristics, robustness and the ability of suppressing disturbance.

关键词： wind power generator linear parameters varying (LPV) system adaptive control robust control guaranteed cost control

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Modularity Techniques in High Performance Permanent Magnet Machines and Applications

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CES Transactions on Electrical Machines and Systems 2018年第1期2卷 93-103页

作者： Z.Q.Zhu Y.X.Li University of Sheffield UK

This paper reviews the modularity techniques in the stator manufacture of permanent magnet machines for different *** basic concepts of modular machines are firstly *** machines for several typical applications are then described in details,including domestic appliances,automobiles and electric vehicles,more electric aircrafts and civic applications,wind power generators,***,the influence of manufacture tolerance gaps and flux barriers on the electromagnetic performance is discussed.

关键词： Domestic appliance electric vehicle(EV) modular machine more electric aircraft permanent magnet wind power generator

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Feasibility of wind power Generation for the Reduction of power Costs in Residential Buildings

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Journal of Energy and power Engineering 2014年第7期8卷 1203-1209页

作者： Romulo Monteiro Callado Joao Reinaldo Imbiriba da Rocha Junior Antonio Felisberto P. Amorim Department of Electronic Engineering Edson Queir6z Foundation Fortaleza University Fortaleza Ceara 60810-260 Brazil

The installation of wind power generators on buildings located in areas with regular winds may be a suitable investment in a renewable power source. Brazil has a high eolic potential, where the annual mean wind speed may reach over eight meters per second. This case study is aimed to assess the economic feasibility of the installation of small wind power plants in urban areas. This work evaluates a project for the installation of a vertical axis wind turbine in three buildings （15-, 22-, and 26-story） including the following stages：（1） installation of a real-time power meter in the 15-store unit; （2） demand analysis of the 26-store building＇s power consumption; （3） winds survey along the coast of the State of Ceara; （4） analysis of the wind turbines available in the market; （5） simulation aimed to choose the system. Vertical wind power generators offer better conditions of use in urban areas. The turnover time was established to be between four and six years in the three studied units. The installation of a wind power generator on buildings in regions with an adequate eolic regimen reaches a financial return of the investment before the end of the equipment＇s lifespan.

关键词： wind power generator wind energy power consumption renewable energy power plants in urban areas.

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海上に设置された风力発电机用ポ一ルの振动解析（解析モデルをばね-质量系で近似した场合）

海上に设置された风力発电机用ポ一ルの振动解析（解析モデルをば...

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第五届中日机械技术史及机械设计国际学术会议

作者：森隆熊野博之佐藤建吉首都大学东京大学院千叶大学

＜正＞The wind power generator fixed on floating body recently has been devised by ***,the generator pole is received oscillation by ocean wave when the floating body was located on *** is necessary to analyze the mechanical behavior of generator pole under the oscillation in order to establish an optimal design of generator pole and floating *** paper deals with vibration analysis of pole for wind power generator which is composed on floating body received ocean *** basic research,the analytical model of whole windmill is replaced as nonlinear oscillation system which is approximated with spring-mass system excited by general periodic *** this paper,Fourier series method is applied for this analytical model and is analyzed the resulting vibration. An exact solution is proposed and is numerically calculated to clarify the theoretical analysis for main *** resonance curves are made using the resulting *** of the amplitude of excitation,the stiffness of clamped spring and damping ratio on the resonance curves are shown by numerical ***, applicability to actual generator pole is discussed using these analytical results.

关键词： wind power generator Nonlinear Vibration wind Mill Vibration Analysis Fourier Series Method

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Recent development of electrical steel sheets in China Steel Corporation

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Baosteel Technical Research 2010年第S1期4卷 53-页

作者： LIN Chienchou HSIAO IChing HUANG Shenchin Metallurgical Department China Steel Corp. KaohsiungTaiwanChina Steel R & D Department China Steel Corp. KaohsiungTaiwanChina

The major applications of electrical steel(ES) sheets are motors,transformers,*** recent years, the raise of crude oil price and increasing environmental consciousness trigger the demands for saving energy and reducing CO_2 emissions,which greatly accelerate the development of high quality ES *** meet the quality requirements of high efficiency motors and transformers,high grade ES sheets with high flux density are continuously developed and introduced to the ***,the price competition and quality improvement of general grades are important for the lower end *** iron loss of 50CS1300(50A1300) is significantly reduced by controlling some key *** than the normal grade,the highest grades of nonoriented (NO) ES are successfully developed *** all specifications of 0.50 and 0.35 mm among JIS C 2552 specification could be provided by *** to the insulation coating development,the Cr-free insulation coating has been introduced to the market due to the environmental concern,and has been enormously adopted in Taiwan ***,the thicker insulation coating technology has been successfully developed for specific wind power generator *** newly developed products and quality improvements of electrical steel sheets in China Steel are introduced in this paper.

关键词： high flux density lower iron loss highest grade Cr-free wind power generator

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