Power Electronics - Brossura

Bradley, D. A.

Brossura

ISBN 10: 1461291720 ISBN 13: 9781461291725

Casa editrice: Springer, 2014

Riassunto

The subject of power electronics originated in the early part of the twentieth century with the development and application of devices such as the mercury arc rectifier and the thyratron valve. Indeed many of the circuits currently in use and described in this book were developed in that period. However, the range of applications for these early devices tended to be restricted by virtue of their size and problems of reliability and control. With the development of power semiconductor devices, offering high reliability in a relatively compact form, power electronics began to expand its range and scope, with applications such as DC motor control and power supplies taking the lead. Initially, power semiconductor devices were available with only relatively low power levels and switching speeds. However, developments in device technology resulted in a rapid improvement in performance, accompanied by a corresponding increase in applications. These now range from power supplies using a single transistor to high voltage DC transmission where the mercury arc valve was replaced in the 1970s by a solid-state 'valve' using thyristor stacks. Developments in microprocessor technology have also influenced the develop­ ment of power electronics. This is particularly apparent in the areas of control, where analogue controllers are being replaced by digital systems, and in the evolution of the 'smart power' devices. These developments have in turn led to system improvements in areas such as robot drives, power supplies and railway traction systems.

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Contenuti

1 Power semiconductors.- Diode.- Thyristor.- Gate turn-off thyristor.- Asymmetric thyristor.- Triac.- Power transistor.- Power MOS.- Heat transfer and cooling.- Protection.- Application of power semiconductors.- 2 Converters.- Rectification.- Inversion.- Commutating diode.- Naturally commutated thyristor converters.- Regulation.- Power factor.- Transformer rating.- Converters with discontinuous current.- Converters with voltage bias.- 3 DC choppers, inverters and cycloconverters.- Forced commutation circuits.- DC choppers.- Voltage-sourced inverter.- Current-sourced inverter.- Inverter performance.- Cycloconverters.- 4 Applications I — Drives.- DC machines.- Variable-speed DC drives.- Case study-servo amplifier.- AC machines.- Slip-ring induction machines.- Synchronous machine.- Brushless machines.- Stepper motors.- Switched reluctance motor.- Traction drives.- Case study — the BR Maglev system.- 5 Applications II.- High-voltage DC transmission.- Case study — Cross-Channel link.- Voltage regulation.- Thyristor circuit-breakers.- Power supplies.- Case study — television receiver power supply.- Microelectronics and power electronics.- Case study — Microelectronic motor speed controller.- 6 Harmonics and interference.- Supply system harmonics.- DC system harmonics.- Inverter harmonics.- Integral cycle control.- Harmonic filters.- Radio-frequency interference.- Appendix 1 Three-phase systems.- Appendix 2 Fourier analysis.- Answers to problems.

Su questa edizione

• Editore: Springer
• Data di pubblicazione: 2014
• ISBN 10: 1461291720
• ISBN 13: 9781461291725
• Rilegatura: Copertina flessibile
• Numero di pagine: 166