power electronics control issues

... fully controlled controller, usually based on triacs, is shown in Fig 1.26 FIGURE 1.25 Envelope of control characteristics of a phase-controlled single phase ac voltage controller 18 CHAPTER / POWER ... switches Depending on the type, the switches can be uncontrolled, semicontrolled, or fully controlled The state of uncontrolled switches, the power diodes, depends on the operating conditions only ... Rao Single- and Multi-Chip Microcontroller Interfacing, 1999, G J Lipovski Control in Robotics and Automation, 1999, B K Ghosh, N Xi, and T J Tarn CONTROL IN POWER ELECTRONICS Selected Problems...

Ngày tải lên: 16/03/2014, 08:20

... power converters KEYWORDS Digital control in power electronics, Discrete time control theory, Half-bridge voltage source converters, Power converters, Power electronics P1: IML/FFX Morgan-FM ... DIGITAL CONTROL IN POWER ELECTRONICS 1.3 TRENDS AND PERSPECTIVES From the above discussion, it will be no surprise if we say that we consider the increasing diffusion of digital control in power electronics ... Introduction: Digital Control Application to Power Electronic Circuits 1.1 Modern Power Electronics 1.2 Why Digital Control ...

Ngày tải lên: 14/05/2014, 21:44

... KEYWORDS Digital control in power electronics, Discrete time control theory, Half-bridge voltage source converters, Power converters, Power electronics v Contents Introduction: Digital Control Application ... CONTROL IN POWER ELECTRONICS We have to admit that, in this complex scenario, the purpose of this book is very simple We just would like to introduce the reader to basic control problems in power ... MODERN POWER ELECTRONICS Classical power electronics may be considered, under several points of view, a mature discipline The technology and engineering of discrete component based switch mode power...

Ngày tải lên: 26/11/2015, 11:32

... Power electronics and motor control SECOND EDITION Power electronics and motor control SECOND EDITION W SHEPHERD L N HULLEY D T W LIANG ... 192 8Power electronics and motor control / W Shepherd, L N Hulley, D T W Liang - 2nd ed p cm Includes bibliographical references and index ISBN 0-521-47241-5 - ISBN 0-521-47813-8 (pbk.) Power electronics ... properties 8.1.2 R.m.s voltage and current 8.1.3 Power and power factor 8.1.3.1 Average power 8.1.3.2 Power factor 8.1.3.3 Reactive voltamperes and power factor correction 8.1.4 Worked examples...

Ngày tải lên: 29/04/2016, 09:46

... both controlling the equivalent reactance and the series voltage A control algorithm has been developed in order to facilitate power flow control with these combined characteristics The control ... a fixed maximum voltage D Current Feedback Control In order to test a simple secondary control system with the given primary control, a current flow control loop was implemented as illustrated ... calculated in primary control PLL algorithm was used as a current measurement The control parameters were adjusted V CONCLUSION The characteristics of a new power flow controller, the Magnetic...

Ngày tải lên: 15/10/2013, 16:12

Ngày tải lên: 15/10/2013, 16:37

... Converters 30.4 Converter Control of Machines Converter Control of DC Machines Converter Control of AC Machines Power Semiconductor Devices Kaushik Rajashekara The modern age of power electronics began ... waveforms, and high power factor (PF) if the source is ac voltage Some special power supplies require controlled direction of power ow Basically two types of power supplies are required: dc power supplies ... Power Electronics 30.1 Power Semiconductor Devices Thyristor and Triac Gate Turn-Off Thyristor (GTO) ReverseConducting Thyristor (RCT) and Asymmetrical Silicon- Controlled Rectier (ASCR) Power...

Ngày tải lên: 19/10/2013, 11:15

Ngày tải lên: 28/10/2013, 19:51

... Ideal rectifiers) controller schemes average current control, 634-636 current programmed control, 636-640 feedforward, 635-636 hysteretic control, 639-641 nonlinear carrier control, 641-645 modeling ... phase, 566 of peak detection rectifier, 548-550 of phase-controlled rectifier, three phase, 573 Power sink element (see Power source element) Power source element in averaged switch models current ... factor FH, 488-490 Harmonics in power systems average power vs Fourier series, 542-543 distortion factor, 548 harmonic standards, 555-559 neutral currents, 552-553 power factor, 546-550 root-mean-square...

Ngày tải lên: 13/12/2013, 01:15

... of Power Electronics Fundamentals of Power Electronics First Edition R W Erickson Power Electronics Group, University of Colorado at Boulder About the second edition A new textbook on power electronics ... of 6) [25/04/2002 16:42:05] Revision to Fundamentals of Power Electronics r r Electronics ECEN 5807 Power Electronics ECEN 5817 Power Electronics Major Features of the Second Edition q q q q ... CoPEC Colorado Power Electronics Center University of Colorado, Boulder About CoPEC Research Publications Students Faculty Courses Textbook: Fundamentals of Power Electronics Power Electronics in...

Ngày tải lên: 13/12/2013, 01:15

... W.Leonhard; Control of electric drives, 2nd Edition, Berlin: Springer-Verlag, 1996 J.M.D.Murphy, F.G.Turnbull; Power electronic control of AC motors, Oxford: Pergamon Press, 1988 B.K.Bose; Power electronics ... three phase induction machine is fed from PWM VSI controlled using voltage space E Levi, Liverpool John Moores University, 2002 105 ENGNG3070 Power Electronics Devices, Circuits and Applications ... insulation is of higher rating ị ị E Levi, Liverpool John Moores University, 2002 97 ENGNG3070 Power Electronics Devices, Circuits and Applications It is usually said that DC voltage utilisation...

Ngày tải lên: 26/12/2013, 01:17

... for the VCS with electromagnetic drive and power converter control circuits for its optimal control ´ ´ DESPOTOVIC AND STOJILJKOVIC: POWER CONVERTER CONTROL CIRCUITS FOR TWO-MASS VCS 465 Fig 22 ... the Professor of Power Converters and Power Converters Control in the Faculty of Electrical Engineering, University of Belgrade His research interests include the areas of power electronics, ac ... Phase Control A principal block diagram for implemented phase control is shown in Fig 17 It consists of the following functional units: ´ ´ DESPOTOVIC AND STOJILJKOVIC: POWER CONVERTER CONTROL...

Ngày tải lên: 03/01/2014, 19:16

... active power flow control Several other power electronic controllers have been built to provide adaptive control to key parameters of the power system besides voltage magnitude, reactive power ... electrical power networks The main plant components of the power network are described, together with the new generation of power network controllers, which use state-of-the-art power electronics ... concepts of reactive power control in power systems remain unchanged, state-of-the-art developments associated with power electronics equipment are dictating new ways in which such control may be achieved...

Ngày tải lên: 16/02/2014, 20:20

... and Perspective Figure 1.1 What is power electronics? Figure 1.2 Features of power electronics Figure 1.3 Why is power electronics important? Figure 1.4 Power electronics applications Figure 1.5 ... reduction, require dc power that is rectified from ac Heating control, light dimming control, and electronic welding control are Power Electronics and Motor Drives based on power electronics Modern ... conserve energy, particularly with power electronics, is far greater 10 Power Electronics and Motor Drives FIGURE 1.8 Energy saving with power electronics • CONTROL OF POWER BY ELECTRONIC SWITCHING...

Ngày tải lên: 05/03/2014, 09:32

Ngày tải lên: 05/03/2014, 10:21

... electronics, and the future offers the possibility of more effective control of the electric power grid using power electronics The Power Electronics Handbook is intended to provide a reference that ... of a textbook, Electric Power and Controls , published in 2001 He has authored or co-authored more than 25 papers in the areas of power systems, power electronics, pulsed -power systems, and engineering ... The power electronics handbook / edited by Timothy L Skvarenina p cm — (Industrial electronics series) Includes bibliographical references and index ISBN 0-8493-7336-0 (alk paper) Power electronics...

Ngày tải lên: 05/03/2014, 10:45

... Difference in the controlling shareholders’ mean voting power: Unifying minus nonunifying firms Voting power difference -2 -1 -1 -2 -3 -4 Full sample 37 Year Figure The mean voting power of controlling ... forms, controlling shareholders enjoy control (voting) power way beyond their cash flow rights We now examine to what extent business groups have replaced dual shares as a mechanism of control ... examine control- change statistics following unifications Did the decrease in the voting power of controlling shareholders trigger takeovers in unifying firms? To address this question, we code control...

Ngày tải lên: 07/03/2014, 01:20

... The complex permeability is mainly used in signal electronics and for low induction levels and is less often used in power electronics In power electronics the magnetic materials have a nonlinear ... tranformers for power electronics / Alex van den Bossche, Vencislav Valchev p cm Includes bibliographical references and index ISBN 1-57444-679-7 Electric inductors Electric transformers Power electronics Equipment ... components are presented in a suitable way for the needs and the applications of power electronics in textbooks on power electronics [3,4,5] Electromagnetic concepts and applications are described...

Ngày tải lên: 16/03/2014, 11:20