Power Seniconductor Drives (EEE 3-2)



Course Objectives: 
The objectives of the course are to make the students learn about:
 The operation of electric motor drives controlled by power electronic converters.
 The stable steady-state operation and transient dynamics of a motor-load system.
 The operation of the chopper fed DC drive.
 The distinguishing features of synchronous motor drives and induction motor drives.

UNIT – I
CONVERTER FED DC MOTORS
Classification of Electric Drives, Basic elements of Electric Drive, Dynamic Control of a Drive system, Stability analysis, Introduction to Thyristor Controlled Drives, Single Phase, Three Phase Semi and Fully Controlled Converters Connected to D.C Separately Excited and D.C Series Motors – Continuous Current Operation – Output Voltage and Current Waveforms – Speed and Torque Expressions – Speed – Torque Characteristics- Problems.

UNIT – II
FOUR QUADRANT OPERATION OF DC DRIVES
Introduction to Four Quadrant Operation – Motoring Operations, Electric Braking – Plugging, Dynamic and Regenerative Braking Operations. Four Quadrant Operation of D.C Motors by Dual Converters – Closed Loop Operation of DC Motor (Block Diagram Only)

UNIT – III
CHOPPER FED DC MOTORS
Single Quadrant, Two Quadrant and Four Quadrant Chopper Fed DC Separately Excited and Series Excited Motors – Continuous Current Operation – Output Voltage and Current Wave Forms – Speed Torque Expressions – Speed Torque Characteristics – Problems on Chopper Fed D.C Motors

UNIT – IV
CONTROL OF INDUCTION MOTOR
Induction Motor Stator Voltage Control and Characteristics. AC Voltage Controllers –Waveforms – Speed Torque Characteristics - Stator Frequency Control andCharacteristics. Voltage Source and Current Source Inverter - PWM Control –Comparison of VSI and CSI Operations – Speed Torque Characteristics – Numerical Problems on Induction Motor Drives – Closed Loop Operation of Induction Motor Drives (Block Diagram Only) – Principles of Vector Control Static Rotor Resistance Control – Slip Power Recovery – V/f control of Induction Motor – Their Performance and Speed Torque Characteristics – Advantages- Applications – Problems

UNIT – V
CONTROL OF SYNCHRONOUS MOTORS
Separate Control & Self Control of Synchronous Motors – Operation of Self Controlled Synchronous Motors by VSI and CSI Cycloconverters. Load Commutated CSI Fed Synchronous Motor – Operation – Waveforms – Speed Torque Characteristics – Applications – Advantages and Numerical Problems – Closed Loop Control Operation of Synchronous Motor Drives (Block Diagram Only), Introduction to variable frequency control.

Study Material's for Power Semiconductors Drives

Important Questions(QB): Download

Unit-1:
Electrical Drives: Download

Unit-2:Four Quadrant Operation of Dc Drives: Download

Unit-3:
Copper Fed dc Drives: Download
Dc Drives: Download
Dc FED Copper[PPT]: Download

Unit-4:
Control Of Induction Motor: Download
Induction Motot[PPT]: Download
Speed Control of Induction Motor: Download

Unit-5:
Synchronous Motors: Download
Synchronous Motors (Part-II): Download
Synchronous Motor Drives(PPT): Download



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