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 r...

Ngày tải lên: 09/09/2015, 17:53

... 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...

Ngày tải lên: 03/01/2014, 19:44

... 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 h...

Ngày tải lên: 06/07/2014, 20:21

... 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...

Ngày tải lên: 11/01/2016, 17:01

... 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...

Ngày tải lên: 11/09/2015, 16:02

... 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 Develop...

Ngày tải lên: 05/09/2013, 16:30

... 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 conv...

Ngày tải lên: 13/05/2014, 00:55

... 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...

Ngày tải lên: 12/09/2015, 08:20

... 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...

Ngày tải lên: 14/09/2015, 14:09

... 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 para...

Ngày tải lên: 29/09/2015, 12:52

... 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 .....

Ngày tải lên: 30/09/2015, 10:11

... 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 penetrat...

Ngày tải lên: 05/09/2013, 09:08

... 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 i...

Ngày tải lên: 05/09/2013, 14:58

... 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 i...

Ngày tải lên: 05/09/2013, 16:30

... 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...

Ngày tải lên: 07/09/2013, 13:06