High efficiency and digitally controlled AC DC converter with power factor correction and fast output voltage regulation
High efficiency and digitally controlled AC DC converter with power factor correction and fast output voltage regulation
... results at 230VAC and 0.4p.u load with sample correction and with CCM-DCM control 141 3.49 Experimental results at 230VAC and 0.1p.u load without sample correction and with CCM control ... load efficiency and poor light load power factor are the two major problems hindering the achievement of high energy efficiency and high power factor across the complete load range With the increasing ... results at 230VAC, full load with sample correction and with CCM-DCM control 140 3.47 Experimental results at 230VAC and 0.4p.u load without sample correction and with CCM control...
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A fuzzy logic CC PWM three phase AC DC converter
... output voltage variation is very limited (5 2%) and both a fast recovery of the rated DC voltage and the accurate input currents tracking are obtained Finally the control has been tested for a reference ... proposed CC- PWM AC/ DC actual power factor PF and can be much smaller than the theoretical one, computed for PF= This behaviour can be recognised in Fig that shows the system evolution at startup, ... previous drawbacks, a control technique based on the fuzzy logic is proposed Such a controller is able to manage the energy exchange by taking into account the actual evolution of the electric quantities...
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Power factor correction and harmonic filtering - Hiệu chỉnh hệ số công suất và lọc sóng hài ppt
... Active power Q = Reactive power S = Apparent power © Schneider Electric - all rights reserved L - Power factor correction and harmonic filtering Reactive energy and power factor L - Power factor correction ... Electric - Electrical installation guide 2009 © Schneider Electric - all rights reserved L - Power factor correction and harmonic filtering Power factor correction of induction motors L - Power factor ... main motor-controlling circuit-breaker or contactor, as shown in Figure L26 8 Example of an installation before and after power- factor correction L - Power factor correction and harmonic filtering...
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AN1208 integrated power factor correction (PFC) and sensorless field oriented control (FOC) system
... System Sensorless Field Oriented Control (FOC) System Ia a, b, c to α −β Ib 3Φ Stator System DS01208A-page AN1208 Power Factor Correction (PFC) PWM Θ Current Control VAVG VAC SVM AN1208 Digital Power ... - AN1162, Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM) (DS01162) - AN1206, Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM) Using Field Weakening ... Sinusoidal Control of PMSM Motors with dsPIC30F DSC (DS01017) - AN1078, Sensorless Field Oriented Control of PMSM Motors (DS01078) • For Power Control see: - AN1106, Power Factor Correction in Power...
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Analysis, design and implementation of high performance control schemes for three phase PWM AC DC voltage source converter
... ANALYSIS, DESIGN AND IMPLEMENTATION OF HIGH PERFORMANCE CONTROL SCHEMES FOR THREE PHASE PWM AC- DC VOLTAGE SOURCE CONVERTER XINHUI WU (B.Eng(Hons.), SJTU, Shanghai, China) A THESIS SUBMITTED FOR ... advantage of providing high dynamic performance Hence, this thesis is aimed at developing active control solutions to achieve high performance for three phase PWM AC- DC voltage source converters ... the dc output voltage Hence, the performance of three phase PWM AC- DC voltage source converter under the generalized supply voltage conditions can be improved either by voltage harmonics control...
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Analysis and performance of high efficiency synchronous reluctance machines
... manufacturing Analysis and performance The principle of operation of reluctance synchronous machines (RSMs) is based on existence of variable reluctance in the air gap of the machine, high reluctance ... P.J and Agu, L.A Theory and Performance of Polyphase Reluctance Machines Proc IEE, 111(8), pp 1435-1445, 1964 [2] Lawrenson, P.J and Gupta, S.K Developments in the Performance and Theory of Segmental-rotor ... Theory of Segmental-rotor Reluctance Machines Proc IEE, 114(5), pp 645-653, 1967 [3] Cruickshank, A.J.O., and Menzies, R.W and Anderson, A.F Theory and Performance of Reluctance Motors With Axially...
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A digitally controlled switch mode power supply based on matrix converter
... RATANAPANACHOTE et al.: DIGITALLY CONTROLLED SWITCH MODE POWER SUPPLY Fig Conventional telecommunication switch mode power supply [1] Fig 125 Proposed digitally controlled switch mode power supply ... Department of Elecrical Engineering, Chungnam National University, Daejeon, Korea His research interests are high power converter, ac/dc, dc/ac and ac/ac converter topologies, power quality and ... in a matrix formation The fictitious dc voltage, , is derived from the rectifier mode of operation (1) is input angular A Rectifier Mode of Operation As detailed in the earlier section, matrix converter...
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A soft switch back to back bi directional DC DC converter and the FPGA based digital control design
... converters The main focus of this thesis is the analysis and design of a soft switching bi- directional DC- DC converter, including the circuit design and the FPGA based digital control design 1.1 Bi- directional ... mode, the bi- directional converter transfers power from the fuel cell to the battery or ultra-capacitor, and the energy is stored there On the other hand, if the AC load like a traction motor can ... two half bridges together, we can obtain the back- to -back bi- directional converter 1.3 Control Analysis and Design of the APHB converter To provide power to the load with high quality, the output...
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Pem fuel cell stack modeling and design of DC DC converter for fuel cell energy system
... PEM FUEL CELL STACK MODELING AND DESIGN OF DC/ DC CONVERTER FOR FUEL CELL ENERGY SYSTEM KONG XIN (M.Eng., XJTU, P.R.China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... the fuel cell stack modelling, the other aim of the research is to design a proper DC/ DC converter for fuel cell based power supply After comparison and discussion of possible candidates of DC/ DC ... Survey of DC/ DC Converters 5.1 Requirements of the Selection of DC/ DC Converter Topology 5.2 Survey of DC/ DC Converter Topologies 5.2.1 Voltage-fed DC/ DC Converter Topologies...
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Analysis and design of power electronic cell for modular power electronic systems AC DC operation
... of AC/ DC mode (Output inductance Lout of DC /AC mode): Lin = 6.74mH • Input capacitance of AC/ DC mode (Output capacitance Cout of DC /AC mode): Cin = 3.76uF • DC capacitor: Cdc = 600uF For AC/ DC ... relationship omitted for AC/ DC operation This capacitor block will be added to standard cell if the cell works in DC /AC mode Hence, the following parameter for UPEC AC/ DC and DC /AC operation are adopted: ... cell (UPEC) The philosophy of UPEC is to design standard cells, which can implement any of converter operation modes such as AC/ DC, AC/ AC, DC /AC and DC/ DC in single phase, paralleled phases and...
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Characterization of high efficiency pseudo bilayer organic solar cells and
... SILICON SOLAR CELLS 17 AMORPHOUS SILICON SOLAR CELLS 19 DYE SENSITIZED SOLAR CELLS 21 PEROVSKITE SOLAR CELLS 23 ORGANIC SOLAR CELLS ... recent technologies that have shown a lot of potential such as dye sensitized solar cells, perovskite solar cells and organic solar cells There is a lot of research that is being carried out on ... stable and they degrade over time [16] Dye sensitized solar cells Dye sensitized solar cells (DSSCs) are one of the new breed of solar cells that are currently been researched about At the heart of...
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EMPIRICAL STUDY ON EFFICIENCY AND SUSTAINABILITY OF SOIL PURIFICATION FACILITY FORDISCHARGED POLLUTANTS FROMROAD SURFACE
... decrease of penetration capacity and purification efficiency during continuous use of the facility was investigated The facility consisted of two tanks In one of the tanks, continuous use of the facility ... Journal of Water and Environment Technology, Vol.3, No.2, 2005 In this study, purification of storm water runoff from road surface using a soil penetration demonstration experiment facility ... replaced to consider measures against clogging by analyzing the recovery of soil contents, penetration efficiency and purification efficiency Sustainability was analyzed by modeling long-term mass...
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CFD for hydrodynamic efficiency and design optimization of key elements of SHP
... utility of the CFD numerical simulations as a tool for design and optimization of hydropower performance and flow behavior through hydromechanical devices or hydraulic structures of intake and outlet ... out of the best efficiency point (BEP) Figure Change of the runner speed and the frequency of vortex at the draft tube of a Francis turbine One of the most important concerns on turbine runner and ... Portugal) and has few publications She is researcher under the scientific domain of water and energy, CFD for SHP and participates in the FCT Project - PTDC/ECM/68694/2006 – Vulnerability and behaviour...
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Energy efficiency and cost analysis of canola production in different farm sizes
... production in different farm sizes in terms of energy use efficiency and economical analysis They reported that, both the total energy input and output energy in apricot production decreased when farm ... the main objective of this study was to compare the energy use and economic efficiencies of canola production in different farm sizes in Golestan province of Iran Materials and methods The investigation ... using the Microsoft Excel spreadsheet and SPSS 17.0 software programs Results and discussion 3.1 Analysis of input-output energy use in canola production The amount of inputs and outputs for canola...
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a study on the problems in teaching english speaking skills to the minority students at sonla ethnic boarding high school and so
... Minority students at Son La Ethnic Boarding High School and some Suggested Solutions with the hope to make a small contribution to the quality of teaching and learning speaking skills at Son La Ethnic ... transactional and interpersonal skills Skills in talking short and long speaking in turns Skills in the management of interactions Skills in negotiating meaning Conversational listening skills ... learning of speaking skills at Son La Ethnic Boarding High School - Investigating the areas of difficulties and obstacles that the teachers at SEBH have encountered when teaching the speaking skills...
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Từ khóa: high efficiency belt centerless grinding of ceramic materials and hardened tool steelhybrid rice has a vigorous root system strong culm thick leaves and high photosynthetic efficiency and thus significant yield advantage over conventional inbred rice caas haas 1991 further hybrid riac machines controlled as dc machines brushless dc machines electronicsac dc ac and dc ac dc convertersac dc and the dcdudc to dc convertersmallsignal zdomain analysis of digitally controlled convertersperiod of high inflation and low economic growthbộ đổi nguồn ac dchow to make a paper airplane that flies far and high and fasthaving fun at work high productivity and profitsenergy efficiency and power plant calculationsplc s7200 cpu 224 ac dc relayremote speed control of ac dc motor pdf59 many ways to go a active high inputs and output b active high inputs active loBáo cáo quy trình mua hàng CT CP Công Nghệ NPVNghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt namNghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt namGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANQuản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninhPhát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninhNghiên cứu, xây dựng phần mềm smartscan và ứng dụng trong bảo vệ mạng máy tính chuyên dùngNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Định tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíTổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)Tăng trưởng tín dụng hộ sản xuất nông nghiệp tại Ngân hàng Nông nghiệp và Phát triển nông thôn Việt Nam chi nhánh tỉnh Bắc Giang (Luận văn thạc sĩ)Tranh tụng tại phiên tòa hình sự sơ thẩm theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn xét xử của các Tòa án quân sự Quân khu (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtTÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ