speed control of three phase induction motor using pwm ppt

... of the degree of Bachelor of Engineering (Honours) in the division of Electrical Engineering, I present the following thesis entitled “Design and Implementation of a Three- Phase Induction Motor ... a control strategy that varies the frequency and voltage of the signal applied to the windings of the induction motor, while controlling the flux created in the air-gap of the induction motor. ... outputs of an induction motor, we can use this motor controller to control an induction machine. ã TMS320F243 DSP controller. This is manufactured by the Texas Instruments Company and is one of...

Ngày tải lên: 27/10/2013, 23:15

Ngày tải lên: 18/12/2013, 09:10

Ngày tải lên: 18/12/2013, 22:06

Ngày tải lên: 15/10/2013, 16:10

Ngày tải lên: 15/10/2013, 16:10

Ngày tải lên: 17/12/2013, 14:15

Ngày tải lên: 17/12/2013, 18:06

... coefficients of three- phase composite material more than that of two - phase composite material in [7]. So, embedding spherical inclusions into continous matrix phase of two - phase fiber composite ... coefficients of matrix and particle phase. 2 3 , K K : bulk moduli of matrix and particle phase. 2 2 G à = : shear modulus of matrix phase. 3 ξ : volume fraction of particle phase. 2 α : ... coefficients of three- phase composite material. This resembles case 3 when letting volume fraction of the fibre phase be constant and increasing step by step volume fraction of the particle phase. ...

Ngày tải lên: 28/03/2014, 13:20

... diag- nostic performance of the three software packages 4DM, ECTb, and QPS for quantification of MPS using a large group of consecutive patients. All MPS studies were classified by three physicians with ... 1:22 http://www.ejnmmires.com/content/1/1/22 Page 5 of 7 ORIGINAL RESEARCH Open Access Diagnostic evaluation of three cardiac software packages using a consecutive group of patients Lena Johansson 1 , Milan ... classifications, we used three very Figure 1 Case illustration of three patients. The polar map for the 4DM software is shown at left, for the ECTb software at center, and for the QPS software at right....

Ngày tải lên: 20/06/2014, 23:20

... prevent and control diseases In decreased order of efficacy In decreased order of efficacy 1. Implementing Biosecurity 2. Vaccination program 3. Medication Often we use these three in varies ... and spread of infectious diseases into and from a poultr y farm. y Biosecurity requires the adoption of a set of attitudes Biosecurity requires the adoption of a set of attitudes ... exudatesexudates exudatesexudates What are the costs of disease prevention & control What are the costs of disease prevention & control Yhldi tiYhldi ti Y ou s h ou ld i nves t ...

Ngày tải lên: 23/03/2014, 21:20

... 10 −4 . 3.3. Fuzzy logic control A fuzzy subset is expressed as a set of rules which take the form of linguistic expressions. These rules express experience of tuning the controller and are captured ... power (normalized) Fuzzy controller 1 Fuzzy controller 2 Packet type? Non-scaled transmission count Scaled transmission count I-pic P-pic B-pic ì5 ì3 ì2 Figure 2: Overview of the FLC of ARQ system. 3.4. Fuzzy logic control ... fullness 00.51 Degree of membership 0 0.5 1 Low Normal High (a) Normalized delay 00.51 Degree of membership 0 0.5 1 To o lo w l o w N o r m a l H i g h To o hi g h (b) Output of controller 1 00.51 Degree of membership 0 0.5 1 To...

Ngày tải lên: 21/06/2014, 22:20

... improve speed and accuracy of laboratory diagnosis. The third part of the project seeks to improve the production and efficacy of locally-manufactured E. coli vaccines. In the first six months of ... (Diagnosis and control of diarrhoea in suckling pigs) began with three objectives to solve this problem: 1. Production and testing of locally-produced E. coli vaccines 2. Development of a management ... 12 th to 30 th 2005 a) Brisbane: Tour of University of Qld School of Veterinary Science, University of Qld Molecular Biosciences Precinct and Department of Primary Industry Toowoomba Veterinary...

Ngày tải lên: 22/06/2014, 12:20

... to the activities of SOD (Figs. 6 Fig. 3 Effect of salinity on leaf transpiration rate of Sa, Sc and Rs Fig. 4 Effect of salinity on soluble sugar content in leaves of Sa, Sc and Rs ... 5 Effect of salinity on leaf membrance peroxidation in leaves, stems and roots of Sa Fig. 6 Effect of salinity on SOD activity in leaves, stems and roots of Sa Fig. 7 Effect of salinity ... research of Zhao [37] indicated that MDA content of the plant increased with the increase of salt concentration, whereas the activity of SOD and ATP enzyme reduced with the increase of salt...

Ngày tải lên: 05/07/2014, 23:21

Ngày tải lên: 10/08/2014, 02:20

Ngày tải lên: 10/08/2014, 02:20

Ngày tải lên: 10/08/2014, 02:20

Ngày tải lên: 10/08/2014, 02:20