IISc Bangalore Course , Prof. G. Narayanan

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IISc Bangalore Course , Prof. G. Narayanan

Contents:

Overview of power electronic converters : Electronic switches - DC - DC converters - DC - AC voltage source inverter - Voltage source and current source inverters - Multilevel inverter - diode clamped inverter - Multilevel inverter - flying capacitor inverter.

Applications of voltage source converter : Applications of voltage source converter I (motor drives, active rectifiers) - Applications of voltage source converter II (reactive current and harmonic compensation).

Purpose of pulsewidth modulation (PWM) : Review of Fourier series - Harmonic voltages and their undesirable effects.

Pulsewidth modulation at low switching frequency : Low switching frequency operation of a VSI I (square wave operation, one switching angle per quarter) - Low switching frequency operation of a VSI II (Two switching angles per quarter) - Selective harmonic elimination and THD optimized PWM.

Triangle-comparison based PWM : Sine-triangle modulation - Third harmonic injection PWM (THIPWM) - Bus-clamping PWM

Space vector-based PWM : Concept of space vector - Conventional space vector PWM and bus-clamping PWM - A unified perspective of triangle-comparison and space vector based PWM - Advanced bus-clamping PWM.

Analysis of line current ripple : Transformation from stationary reference frame to synchronously revolving dq reference frame - Volt-second balance and instantaneous error voltage - Calculation of RMS line current ripple - Space vector-based hybrid PWM for reduced line current ripple.

Analysis of dc link current : Inverter state and dc link current - Average and RMS values of dc link current.

Analysis of torque ripple : Calculation of harmonic torques and RMS torque ripple - Hybrid PWM techniques to reduce ripple torque.

Inverter loss : Evaluation of conduction loss - Dependence of switching loss on power factor and modulation method - PWM techniques for reduced switching loss.

Effect of inverter dead-time : Effect of dead-time with continuous modulation - Effect of dead-time with discontinuous or bus-clamping PWM.

Overmodulation : Per-phase approach to overmodulation - Space vector approach to overmodulation - A perspective from the synchronously revolving d-q reference frame.

PWM for multilevel inverters : Extension of sine-triangle modulation to three-level inverters - Extension of conventional space vector modulation to three-level inverters - Analysis of line current ripple and torque ripple.

Overview of power electronic converters : Electronic switches - DC - DC converters - DC - AC voltage source inverter - Voltage source and current source inverters - Multilevel inverter - diode clamped inverter - Multilevel inverter - flying capacitor inverter.

Applications of voltage source converter : Applications of voltage source converter I (motor drives, active rectifiers) - Applications of voltage source converter II (reactive current and harmonic compensation).

Purpose of pulsewidth modulation (PWM) : Review of Fourier series - Harmonic voltages and their undesirable effects.

Pulsewidth modulation at low switching frequency : Low switching frequency operation of a VSI I (square wave operation, one switching angle per quarter) - Low switching frequency operation of a VSI II (Two switching angles per quarter) - Selective harmonic elimination and THD optimized PWM.

Triangle-comparison based PWM : Sine-triangle modulation - Third harmonic injection PWM (THIPWM) - Bus-clamping PWM

Space vector-based PWM : Concept of space vector - Conventional space vector PWM and bus-clamping PWM - A unified perspective of triangle-comparison and space vector based PWM - Advanced bus-clamping PWM.

Analysis of line current ripple : Transformation from stationary reference frame to synchronously revolving dq reference frame - Volt-second balance and instantaneous error voltage - Calculation of RMS line current ripple - Space vector-based hybrid PWM for reduced line current ripple.

Analysis of dc link current : Inverter state and dc link current - Average and RMS values of dc link current.

Analysis of torque ripple : Calculation of harmonic torques and RMS torque ripple - Hybrid PWM techniques to reduce ripple torque.

Inverter loss : Evaluation of conduction loss - Dependence of switching loss on power factor and modulation method - PWM techniques for reduced switching loss.

Effect of inverter dead-time : Effect of dead-time with continuous modulation - Effect of dead-time with discontinuous or bus-clamping PWM.

Overmodulation : Per-phase approach to overmodulation - Space vector approach to overmodulation - A perspective from the synchronously revolving d-q reference frame.

PWM for multilevel inverters : Extension of sine-triangle modulation to three-level inverters - Extension of conventional space vector modulation to three-level inverters - Analysis of line current ripple and torque ripple.

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Pulse width Modulation for Power Electronic Converters by Dr. G. Narayanan,Department of Electrical Engineering,IISc Bangalore.For more details on NPTEL visit httpnptel.ac.in

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- 1.Electronic switches
- 2.DC -- DC converters
- 3.DC -- AC converters
- 4.Multilevel converters - I
- 5.Multilevel converters - II
- 6.Applications of voltage source converter -- I
- 7.Applications of voltage source converter -- II
- 8.Applications of voltage source converter -- III
- 9.Purpose of PWM-I
- 10.Purpose of PWM-II
- 11.Low switching frequency PWM - I
- 12.Low switching frequency PWM -- II
- 13.Selective harmonic elimination
- 14.Off-line optimized pulsewidth modulation
- 15.Sine-triangle pulsewidth modulation
- 16.Harmonic injection pulsewidth modulation
- 17.Bus-clamping pulsewidth modulation
- 18.Triangle-comparison based PWM for three-phase inverter
- 19.Concept of space vector
- 20.Conventional space vector PWM
- 21.Space vector based bus-clamping PWM
- 22.Space vector based advanced bus-clamping PWM
- 23.Harmonic analysis of PWM techniques
- 24.Analysis of RMS line current ripple using the notion of stator flux ripple
- 25.Evaluation of RMS line current ripple using the notion of stator flux ripple
- 26.Analysis and design of PWM techniques from line current ripple perspective
- 27.Instantaneous and average dc link current in a voltage source inverter
- 28.DC link current and DC capacitor current in a voltage source inverter
- 29.Analysis of torque ripple in induction motor drives - I
- 30.Analysis of torque ripple in induction motor drives - II
- 31.Evaluation of conduction loss in three-phase inverter
- 32.Evaluation of switching loss in three-phase inverter
- 33.Design of PWM for reduced switching loss in three-phase inverter
- 34.Effect of dead-time on inverter output voltage for continuous PWM schemes
- 35.Effect of dead-time on inverter output voltage for bus-clamping PWM schemes
- 36.Analysis of overmodulation in sine-triangle PWM from space vector perspective
- 37.Overmodulation in space vector modulated inverter
- 38.PWM for three-level neutral-point-clamped inverter -- I
- 39.PWM for three-level neutral-point-clamped inverter - II
- 40.PWM for three-level neutral-point-clamped inverter - III

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