Power Electronics pptx

... there is a 1 2 Power Electronics Power input Power processor Power output Load Measurement Control signal Controller Reference v i i i i O v O FIGURE 1.1 Block diagram of a power electronics system. possibility ... Resistance (Ω) p, P Instantaneous power, Rated/real power (W) q, Q Instantaneous reactive power, Rated reactive power (VAR) s, S Instantaneous apparent power,...

Ngày tải lên: 19/03/2014, 10:20

... 732-737 Average power and Fourier series, 542-543 modeled by power source element, 375-379, 423-428, 438-447 in nonsinusoidal systems, 542-555 predicted by averaged models, 57 power factor, 546-550 sinusoidal ... factor F H , 488-490 Harmonics in power systems average power vs. Fourier series, 542-543 distortion factor, 548 harmonic standards, 555-559 neutral currents, 552-553 powe...

Ngày tải lên: 13/12/2013, 01:15

... and high power factor (PF) if the source is ac voltage. Some special power supplies require controlled direction of power flow. Basically two types of power supplies are required: dc power supplies ... 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 A...

Ngày tải lên: 19/10/2013, 11:15

... de- flecting plates. dc power Symbol, P dc . Unit, watt. The power in a dc circuit; P dc = EI, where E is in volts and I is in amperes. Compare AC POWER. Also see POWER. dc power supply A power unit that ... REFER- ENCE ACOUSTIC POWER (10 –6 W). dBrn Abbreviation for decibels above reference noise. A level of 0 dBrn is defined as noise power of 10 –9 W (1 nanowatt). dBrnc Noise...

Ngày tải lên: 10/12/2013, 06:15

... trên slide PowerPoint khi ñang trình bày bài giảng của mình. Lưu ý: - Trong bài hướng dẫn này, chương trình PowerPoint ñược sử dụng là PowerPoint 2003, tuy nhiên với các phiên bản PowerPoint ... - ðể chèn file Flash vào PowerPoint, chúng ta thực hiện như sau: - Mở chương trình PowerPoint trên máy tính, tạo một file PowerPoint mới hoặc mở một bài giảng PowerPoint có sẵn. - Và...

Ngày tải lên: 11/12/2013, 17:15

... 16:42:05] CoPEC CoPEC Colorado Power Electronics Center University of Colorado, Boulder About CoPEC Research Publications Students Faculty Courses Textbook: Fundamentals of Power Electronics Power Electronics ... (6 of 6) [25/04/2002 16:42:05] Fundamentals of Power Electronics Fundamentals of Power Electronics Second Edition Up To instructors of Power Electronics co...

Ngày tải lên: 13/12/2013, 01:15

... and Power Supply Estimated time: 45 Minutes Objective In this lab, identify the type of computer case to be used, the form factor of the unit, and the voltage selector switch on the power ... USB (Make sure it matches the connector on the Motherboard). Power Supply AT __________ ATX _________ Other _________ Power Supply Wattage _______ Step 2 Examine the screws...

Ngày tải lên: 21/12/2013, 19:15

... F.G.Turnbull; Power electronic control of AC motors, Oxford: Pergamon Press, 1988. [3] B.K.Bose; Power electronics and AC drives, Englewood Cliffs: Prentice-Hall, 1986. ENGNG3070 Power Electronics ... widths leads to subsequent difference in the values of the first harmonic of the output ENGNG3070 Power Electronics Devices, Circuits and Applications  E Levi, Liverpool John Moor...

Ngày tải lên: 26/12/2013, 01:17