Theory Power Electronics phần 1 pdf

... 30.3 Power Supplies DC Power Supplies•AC Power Supplies•Special Power Supplies 30.4 Converter Control of Machines Converter Control of DC Machines•Converter Control of AC Machines 30 .1 Power ... and capability,” Power Conversion , pp. 544–554, Oct. 19 89. B.W. Williams, Power Electronics, Devices, Drivers and Applications, New York: John Wiley, 19 87. 3...

Ngày tải lên: 08/08/2014, 03:20

... Fig. 30 .13 ), then the converter operates in CCM; otherwise DCM occurs. The three possible control methods [Severns and Bloom, 19 88; Hnatek, 19 81; Unitrode Corporation, 19 84; Motorola, 19 89; Philips ... Inverter-Fed AC Machines Control,” IEEE Power Electronics Specialists Conference, 19 87, pp. 4 91 496. P.C. Sen, Thyristor DC Drives, New York: John Wiley, 19 81. G. Venkataram...

Ngày tải lên: 08/08/2014, 03:20

... compared to ZCS QRCs. Double-Ended Resonant Converters.These converters [Sum, 19 88; Bhat, 19 91; Steigerwald, 19 88; Bhat, 19 92] use full-wave rectifiers at the output, and they are generally referred ... capacitor CÂ t (on the secondary side) is (30 .11 ) The peak voltage across C s and the peak current through CÂ t are given by (30 .12 ) (30 .13 ) (30 .14 ) The plot of converter gai...

Ngày tải lên: 08/08/2014, 03:20

... Bose, Power Electronics and AC Drives, Englewood Cliffs, N.J.: Prentice-Hall, 19 86. B.K. Bose, “Adjustable speed AC drives—A technology status review,” Proc. IEEE, vol. 70, pp. 11 6 13 5, Feb. 19 82. B.K. ... Industrial Electronics, vol. 38, no. 4, pp. 2 51 259, Aug. 19 91. A.K.S. Bhat, “Fixed frequency PWM series-parallel resonant converter,” IEEE Trans. Industry Applications, vol...

Ngày tải lên: 08/08/2014, 03:20

... to manifestation is all around you breaks down the mental barrier that mind power influence in not possible. When you are using your mind power to seduce others, there are a few factors that you need to know. ... this later). Prana is the name given to a powerful life-giving energy that is everywhere. It has many names: Orgone energy, Chi, Life-Force, Serpent Power, Light Spiral and tons...

Ngày tải lên: 07/08/2014, 19:22

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Ngày tải lên: 08/08/2014, 11:21

... list on the right. Choose the Power categories (Power_ Adjustments, Power_ Masking, Power_ Extras, Power_ Separations, Power_ Paths, and Power_ Playback) to reveal the power tool listings. The usage ... CORRECTION 13 7 Chapter 6 ■ Color and Tone Enhancement 13 9 Chapter 7 ■ Altering Composition 17 3 Chapter 8 ■ The Image Process in Action 211 PART IV ■ CONTROLLING AND ENHANCING...

Ngày tải lên: 09/08/2014, 12:21

... điểm Q: V DSQ = 15 V; I DQ = 3,5 mA Thay vào DCLL: R d +R s = (V DD – V DSQ ) / I DQ = (30 – 15 ) / 3,5 = 4,3 KΩ Từ đặc tuyến VA: V GSQ = -1 V ⇒ R s = - V DSQ / I DQ = 1V / 3,5 mA = 286 ... trình phân cực: v GS = SDDD RiV RR R − ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + 21 1 = V GG – i D R s trong đó: V GG = DD V RR R ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + 21 1 : Điện áp cung cấp cho cực cổng Nhận xét: R s :...

Ngày tải lên: 20/08/2012, 11:16

... (4-23). 11 2 t tr tb =29,5 0 C thì γ tr tb =1. 146 kg/m 2 t r =34 0 C thì γ l =1. 13 kg/m 2 . *Xác định vị trí mặt phẳng trung hoà .93,7 13 ,1 1 81, 1 . 20 10 1 10 1 22 2 1 1 m F F H h r ng = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + = ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + = γ γ ... chắn. 11 0 t ng = 22 0 C, ta có: γ ng = 1, 173 (kg/m 3 ) t r = 30 0 C, ta có: γ r = 1, 1 41 (kg/m 3 ) Thay vào công thứ...

Ngày tải lên: 23/08/2012, 15:54