speed control methods of 3 phase induction motor pdf

... designed to control a brush-less DC motor. However, by constructing a feedback loop that can detect the outputs of an induction motor, we can use this motor controller to control an induction ... the induction motor s many advantages are clearly explained. Wildi also presents the two types of induction motors: “the squirrel cage induction motor and the “wound motor . An explanation of ... Design………………………………. 9 3. 1. The basic control format…………………………… 9 3. 2. The existing motor controller……………………… 10 3. 3. Current sensing module……………………………… 11 3. 4. The speed sensor……………………………………...

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Ngày tải lên: 17/12/2013, 18:06

... 6,57 7,75 6, 73 5,56 - Experiment * 6,0 12 ,3 19,2 29,0 33 ,0 Analysis 6,5 13, 4 21,0 31 ,6 - 20%TiO 2 + 20%W800 + 60% AKAVINA polyester (sample type B) Error % 8 ,33 8,94 9 ,30 8,96 - Note: ... )            =+       ∂∂ ∂ + + ∂ ∂ + ∂ ∂ − ∂∂ ∂ ++ ∂ ∂ =+       ∂∂ ∂ + + ∂ ∂ + ∂ ∂ − ∂∂ ∂ ++ ∂ ∂ −= ∂ ∂ + ∂ ∂ 0 12 2 0 12 2 2 2 55 1 2 2 44 2 2 44 1 32 3 ,1 3 3 2 2 44 1 2 2 55 2 2 55 1 32 3 ,1 3 3 2 ψ ψψψ ϕ ϕϕϕ ψϕ I yxA DD xA D yA D I hyx w DD y w D I yxA DD yA D xA D I hyx w DD x w D hI z yx xyxyy yxy xyxyy yxx (3) ... bending deflection 3- phase composite Concentrate force Deflection (mm) 1kN 3kN 6kN 10kN Ultimate deflection Experiment * 7,6 14,2 20,8 32 ,4 34 ,3 Analysis 8,1 15 ,3 22,2 34 ,2 - 10%TiO 2 ...

Ngày tải lên: 14/03/2014, 13:20

Ngày tải lên: 21/07/2014, 16:21

... Methods of Payment in International Trade This guide explains the different methods of getting paid and the different levels of risks involved. You should note that none of the methods ... are to be made, possibly as part of an agreed schedule. However, they do not offer the documentary control of Letters of Credit to buyers and, as such they are an unconditional guarantee. Other ... some research? On the basis of this information, the exporter can start to think about his stance in terms of the payment risk ladder. 5 SITPRO Financial Guide: Methods of Payment in International...

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Ngày tải lên: 18/12/2013, 22:06

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Ngày tải lên: 15/10/2013, 16:10

... Thêm R add nối tiếp cuộn dây phần ứng Example 1: Example 2: Example 3: nh lut Bio-Savart: nh lut Faraday: ( ) BlIeF r r r ì= () l.Bve r r r ì= ...

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Ngày tải lên: 18/12/2013, 09:10

... new Windows Server 20 03 root ACL. Notice that this template can also be used to apply similar settings to the root of other disks. Figure 9.10: Windows Server 20 03 built-in local security ... Server 20 03 allows administrators to centrally manage, configure, and push security policy and other administrative settings to an entire site, domain, or organizational unit. Policies, officially ... default settings. Therefore, if you need to preserve your changes, create a copy of the default template(s), introduce officially approved changes into it, and maintain these copies as well as default...

Ngày tải lên: 21/01/2014, 04:20

... ++ = ++ F H G I K J ++ F H G I K J = ì +ì+ì = ì ++ bgb g b gb b g b g 2 2 5 23 4 5 6 836 3 10 6 33 34 10 2 6 036 10 6 836 3 10 4 11 632 9 3 g A block diagram for this open-loop system is shown below: ... Furthermore, the control of AC actuators was a difficult task at that time. Today, AC motors are also widely used as servo-motors, employing modern methods of phase- voltage control and frequency control ... angular speed ω c . Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 12 7. Control Design The objective of the exercise is to control the angular speed of the...

Ngày tải lên: 25/01/2014, 13:20

... tag-binding site. (B) The result of GLGI is conversion of 14 nucleotides of SAGE tag to a hundred bases of 3 cDNA fragment. This gure is reproduced from [34 ]. Fig. 2. Schematic of the high-throughput GLGI ... Cancer 33 , 252261. 33 van den Berg A, van der Leij J & Poppema S (1999) Serial analysis of gene expression: rapid RT-PCR analysis of unknown SAGE tags. Nucleic Acids Res 27, e17. 34 Chen ... lLofH 2 O, 15 lLof2m NaClO 4 , and 38 lL of 2-propanol. Precipitation mixture III: 64 lL of a 100% ethanol ⁄ 3 m NaAc mixture (25 : 1), 1 lL of glycogen (20 mgặmL )1 ; Roche), and 10 lLofH 2 O. Master...

Ngày tải lên: 07/03/2014, 00:20

... of pregnancy FEBS Journal 274 (2007) 33 5 133 62 ê 2007 The Authors Journal compilation ê 2007 FEBS 33 53 Acknowledgements Supported in part by a grant CA 935 42-2 from NIH, a grant DAMD17-01-1- 035 3 ... differentiation effect of pregnancy Y. E. Liu et al. 33 52 FEBS Journal 274 (2007) 33 5 133 62 ê 2007 The Authors Journal compilation ê 2007 FEBS Induction of accumulation of DPA and EPA to mammary ... differentiation effect of pregnancy Y. E. Liu et al. 33 56 FEBS Journal 274 (2007) 33 5 133 62 ê 2007 The Authors Journal compilation ê 2007 FEBS ratio 1 includes a wider range of n-6 and n -3 fatty acids...

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