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LECTURE NOTES

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DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING COURSE: POWER ELECTRONICS BRANCH: EEE CLASS: III/I Sem. YEAR: 2013-14 LECTURE NOTES SHRI VISHNU ENGINEERING COLLEGE FOR WOMEN VISNUPUR, BHIMAVARAM - 534202 DEPARTMENT OF EEE SVECW Page 2 INDEX S. NO. CONTENT PAGE NO. 1 UNIT I: POWER SEMICONDUCTOR DEVICES 3 - 32 2 UNIT II: FIRING AND COMMUTATION CIRCUITS OF SCR 33 - 50 3 UNIT III: SINGLE PHASE HALF CONTROLLED CONVERTERS 51 - 60 4 UNIT IV: SINGLE PHASE FULLY CONTROLLED CONVERTERS 61 - 70 5 UNIT V: THREE PHASE LINE COMMUTATED CONVERTER 71 87 6 UNIT VI: AC VOLTAGE CONTROLLERS & CYCLO CONVERTERS 88 99 DEPARTMENT OF EEE SVECW Page 3 Unit-1 Power Semi Conductor Devices DEPARTMENT OF EEE SVECW Page 4 INTRODUCTION TO POWER ELECTRONICS: Power Electronics is a field which combines Power (electric power), Electronics and Control systems.

Insulated Gate Bipolar Transistors (IGBT's). Static Induction Transistors (SIT's). The Thyristors can be subdivided into different types Forced-commutated Thyristors (Inverter grade Thyristors) Line-commutated Thyristors (converter-grade Thyristors) Gate-turn off Thyristors (GTO). Reverse conducting Thyristors (RCT's).

  Gate, Transistor, Insulated, Bipolar, Insulated gate bipolar transistor

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Insulated Gate Bipolar Transistors (IGBT's). Static Induction Transistors (SIT's). The Thyristors can be subdivided into different types Forced-commutated Thyristors (Inverter grade Thyristors) Line-commutated Thyristors (converter-grade Thyristors) Gate-turn off Thyristors (GTO). Reverse conducting Thyristors (RCT's).

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