智能電力設(shè)備設(shè)計(jì)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上光伏逆變器、風(fēng)電變流器功率MOSFET、IGBT、IPM電力電子產(chǎn)品/設(shè)備APF、SVG大容量變換技術(shù)大功率電磁兼容設(shè)計(jì)Photovoltaic inverter, wind power convertersPower MOSFET, IGBT, IPMPower electronic products / equipmentAPF, SVGLarge capacity transformEMC Design PowerInternational Journal of Hydrogen EnergyThis paper covers the design of a D

2、CDC power converter aimed for hydrogen production from photovoltaic sources. Power conditioning for such application is usually driven by different constraints: high step-down conversion ratio is required if the input voltage of such equipment has to be compatible with photovoltaic sources that are

3、connected to grid-connected inverters; galvanic isolation; high efficiency and low mass. Taking into account those factors, this work proposes a pushpull DC/DC converter for power levels up to 5 kW. The operation and features of the converter are presented and analyzed. Design guidelines are su

4、ggested and experimental validation is also given.Article Outline1. 2. 2.1. 2.2. 3. 3.1. 3.2. 3.3. 3.4. 3.5. 4. 5.   傳統(tǒng)區(qū)域性光伏發(fā)電電力系統(tǒng)的革新Renewable and Sustainable Energy Reviews可再生與可持續(xù)利用能源評(píng)論Traditional electric power systems are designed in large part to utilize large baseload power plants, with li

5、mited ability to rapidly ramp output or reduce output below a certain level. The increase in demand variability created by intermittent sources such as photovoltaic (PV) presents new challenges to increase system flexibility. This paper aims to investigate and emphasize the importance of the grid-co

6、nnected PV system regarding the intermittent nature of renewable generation, and the characterization of PV generation with regard to grid code compliance. The investigation was conducted to critically review the literature on expected potential problems associated with high penetration levels and i

7、slanding prevention methods of grid tied PV. According to the survey, PV grid connection inverters have fairly good performance. They have high conversion efficiency and power factor exceeding 90% for wide operating range, while maintaining current harmonics THD less than 5%. Numerous large-scale pr

8、ojects are currently being commissioned, with more planned for the near future. Prices of both PV and balance of system components (BOS) are decreasing which will lead to further increase in use. The technical requirements from the utility power system side need to be satisfied to ensure the safety

9、of the PV installer and the reliability of the utility grid. Identifying the technical requirements for grid interconnection and solving the interconnect problems such as islanding detection, harmonic distortion requirements and electromagnetic interference are therefore very important issues for wi

10、despread application of PV systems. The control circuit also provides sufficient control and protection functions like maximum power tracking, inverter current control and power factor control. Reliability, life span and maintenance needs should be certified through the long-term operation of PV sys

11、tem. Further reduction of cost, size and weight is required for more utilization of PV systems. Using PV inverters with a variable power factor at high penetration levels may increase the number of balanced conditions and subsequently increase the probability of islanding. It is strongly recommended

12、 that PV inverters should be operated at unity power factor.Article Outline1. 2. 3. 4. 4.1. 4.2. 5. 6. 6.1. 6.2. 7. 8. 9. 光伏系統(tǒng)設(shè)計(jì)選型的優(yōu)化 聯(lián)網(wǎng)系統(tǒng)中各模塊的技術(shù)革新與效能整合提高  Renewable EnergyAn optimal sizing methodology based on an energy approach is described and applied to grid-connected photovoltaic syst

13、ems taking into account the photovoltaic module technology and inclination, the inverter type and the location. A model describing the efficiency for m-Si, p-Si, a-Si and CIS is used. The method has been applied on various meteorological stations in Bulgaria and Corsica (France). The main parameter

14、affecting the sizing is the inverter efficiency curve. The influence of the PV module technology seems less important except for amorphous photovoltaic modules for which special remarks have been made. The inclination on the PV system influences the performances particularly when the inverter is und

15、ersized compared to the PV peak power.Article Outline1. 2. 2.1. 2.2. 3. 4. 4.1. 4.2. 4.3. 4.4. 5. 6. 6.1. 6.2. 6.3. 7. 7.1. 7.2. 8.  低壓智能電力電子變換技術(shù)Electric Power Systems ResearchIn this paper an efficient design along with modeling and simulation of a transformer-less small-scale centralized DCbu

16、s Grid Connected Hybrid (WindPV) power system for supplying electric power to a single phase of a three phase low voltage (LV) strong distribution grid are proposed and presented. The main components of the hybrid system are: a PV generator (PVG); and an array of horizontal-axis, fixed-pitch, small-

17、size, variable-speed wind turbines (WTs) with direct-driven permanent magnet synchronous generator (PMSG) having an embedded uncontrolled bridge rectifier. An overview of the basic theory of such systems along with their modeling and simulation via Simulink/MATLAB software package are presented. An

18、intelligent control method is applied to the proposed configuration to simultaneously achieve three desired goals: to extract maximum power from each hybrid power system component (PVG and WTs); to guarantee DC voltage regulation/stabilization at the input of the inverter; to transfer the total prod

19、uced electric power to the electric grid, while fulfilling all necessary interconnection requirements. Finally, a practical case study is conducted for the purpose of fully evaluating a possible installation in a city site of Xanthi/Greece, and the practical results of the simulations are presented.

20、Article Outline1. 2. 2.1. 2.2. 2.2.1. 2.2.2. 2.2.3. 2.3. 2.3.1. 2.3.2. 2.3.3. 2.3.4. 2.3.5. 2.4. 2.5. 2.5.1. 2.5.2. 2.5.3. 3. 3.1. 3.2. 4. Appendix A. Appendix B.  Robotics and Computer-Integrated ManufacturingThis paper presents the design of a non-inverting synchronous buck-boost DC/DC power

21、converter with moderate power level for a solar power management system. The buck-boost requirement arises from the rapid changes in the atmospheric condition or the sunlight incident angle. The system mainly consists of the non-inverting synchronous buck-boost DC/DC power converter, MOSFET drivers,

22、 anti-cross conduction logic circuitry, feedback compensator, and PWM regulator. The system is capable of converting the supply voltage source to higher and lower voltages to the load terminal with voltage polarity unchanged. The voltage at the load terminal is controlled by continuously adjusting t

23、he duty cycle of the PWM regulator. Application of the buck-boost converter in battery management system design is also addressed.Article Outline1. 2. 3. 4. 5. 6. 7. 鋰電池陣列的應(yīng)用項(xiàng)目與管理方案    光伏和風(fēng)電系統(tǒng)仿真建模與數(shù)字化的模擬運(yùn)和行計(jì)算 風(fēng)電逆變器的系統(tǒng)運(yùn)行、非平衡狀態(tài)聯(lián)網(wǎng)和各種條件下的控制設(shè)計(jì)      &

24、#160; 氫發(fā)電和氫儲(chǔ)能系統(tǒng)的可靠性優(yōu)化設(shè)計(jì)方法 風(fēng)力/光伏發(fā)電平臺(tái) 元器件性能及其輸出約束A hybrid wind/photovoltaic/fuel cell generation system is designed to supply power demand. The aim of this design is minimization of annualized cost of the hybrid system over its 20 years of operation. Optimization problem is subject to reliable su

25、pply of the demand. Three major components of the system, i.e. wind turbine generators, photovoltaic arrays, and DC/AC converter, may be subject to failure. Also, solar radiation, wind speed, and load data are assumed entirely deterministic. System costs involve investments, replacement, and operati

26、on and maintenance as well as loss of load costs. Prices are all empirical and components are commercially available. An advanced variation of Particle Swarm Optimization algorithm is used to solve the optimization problem. Results reveal the impact of component outages on the reliability and cost o

27、f the system, so they are directly dependent on components' reliabilities, i.e. outages result in need for a larger generating system for supplying the load with the acceptable reliability. Additionally, it is observed that the inverter's reliability is an upper limit for the system's re

28、liability. Moreover, an approximate method for reliability evaluation of the hybrid system is proposed which considerably reduces the time and computations.Article Outline1. 2. 2.1. 2.2. 2.3. 2.4. 2.5. 2.6. 2.7. 2.8. 3. 3.1. 3.1.1. 3.1.2. 3.1.3. 3.1.4. 3.2. 3.3. 3.4. 4. 5. 6. 6.1. 6.2. 6.3. 7.  

29、; 智能電力系統(tǒng)的新分析方法 聯(lián)網(wǎng)光伏電站的逆變器容量選擇 參數(shù)計(jì)算 設(shè)備選型 匹配和整體組建A new simple analytical method for the calculation of the optimum inverter size in grid-connected PV plants in any location is presented. The derived analytical expressions contain only four unknown parameters, three of which are related to the inv

30、erter and one is related to the location and to the nominal power of the PV plant. All four parameters can be easily estimated from data provided by the inverter manufacturer and from freely available climate data. Additionally, analytical expressions for the calculation of the annual energy injecte

31、d into the ac grid for a given PV plant with given inverter, are also provided. Moreover, an expression for the effective annual efficiency of an inverter is given. The analytical method presented here can be a valuable tool to design engineers for comparing different inverters without having to per

32、form multiple simulations, as is the present situation. The validity of the proposed analytical model was tested through comparison with results obtained by detailed simulations and with measured data.Article Outline1. 2. 3. 4. 5. 5.1. 5.2. 6.     智能電力系統(tǒng)性能的整體離線測試 氫發(fā)電和儲(chǔ)能設(shè)施的復(fù)雜環(huán)境仿真O

33、cean Engineering海洋工程學(xué)學(xué)報(bào)Floating oscillating-bodies constitute an important class of offshore wave energy converters. The testing of their power take-off equipment (PTO) (high-pressure hydraulics, linear electrical generator or other) under realistically simulated sea conditions is usually regarded a

34、s a major task. A laboratory rig, consisting of a U-tube enclosing an oscillating column of water driven by a time-varying air-pressure, was devised to simulate the hydrodynamics of an oscillating buoy absorbing energy from sea waves, especially the inertia and the resonant frequency of the oscillat

35、ing body. The PTO force is applied (by means of a piston) on one of the ends of the U-tube oscillating water column, whereas the other end is subject to a controlled time-varying air pressure. This is found to provide a reasonably realistic way of testing the PTO system (including its control) at an

36、 adequate scale (say about 1:5 to 1:4), which would avoid the use of a much more expensive experimental facility (very large wave tank) or testing in real wind-generated sea-waves. The matching conditions that the U-tube geometry and the driving time-varying air pressure must meet to ensure an adequ

37、ate simulation are derived. These conditions leave some freedom to the U-tube rig designer and operator, allowing practical and engineering issues to be taken into account.Article Outline1. 2. 2.1. 2.2. 2.3. 2.4. 2.5. 2.6. 3. 4.   實(shí)時(shí)運(yùn)行條件與故障檢測系統(tǒng)：其相關(guān)算法回顧 Energy efficiency (EE) improveme

38、nt is one of the most important targets to be achieved on every society as a whole and in buildings in particular. Energy Smart Building aims to accelerate the uptake of EE, healthy buildings that by integrating smart technology and solutions consume radically little resources while enhancing the qu

39、ality of life. This paper addresses how uninterruptible power supply (UPS), particularly when configured in distributed DC mode, can become an Energy Efficient (EE) solution in high tech buildings, especially when integrated with complimentary Power Quality (PQ) measures. The paper is based upon PQ

40、audits conducted at different IT-intensive modern building. Some of the mayor objectives of the PQ studies were: detecting the main involved disturbances by PQ monitoring, identifying the power disturbances root causes, characterizing the electromagnetic compatibility level of equipments and install

41、ation and providing guidelines for implementing energy-efficiency solutions. It was found that the main problems for the equipment installed were harmonics and voltage sag (dip). Finally, this paper demonstrates the impacts of generalized electronic devices on the PQ of the buildings and the implications on energy uses.Computer Standards & InterfacesEmbedded systems and web browsers have started to provide two-dimensional vector graphics features, to finally support scalability of graphics outputs, while traditional graphics systems have focused o