Transcription of Power Semiconductor Devices - Pearson
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Power Semiconductor Devices - Pearson
1 CHAPTER1 Power Semiconductor INTRODUCTIONP ower Semiconductor Devices constitute the heart of modern Power electronic are used in Power electronic converters in the form of a matrix of on-off switches, and helpto convert Power from ac-to-dc (rectifier), dc-to-dc (chopper), dc-to-ac (inverter), and ac-to-ac atthe same (ac controller) or different frequencies (cycloconverter). The switching mode powerconversion gives high efficiency, but the disadvantage is that due to the nonlinearity of switches,harmonics are generated at both the supply and load sides.
Power diodes provide uncontrolled rectification of power and are used in applications such as electroplating, anodizing, battery charging, welding, power supplies (dc and ac), and variable-frequency drives. They are also used in feedback and the freewheeling functions of …
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