##### Power Electronics

- Introduction to Power Electronics
- Difference between Power Electronics and Linear Electronics
- Varieties of Power semiconductor Devices
- Classification of Power Diodes
- Silicon Controlled Rectifier (SCR)
- Introduction to MOSFET
- Introduction to the IGBT
- Base/Gate drive circuit
- Introduction to the GTO
- Power converter Topologies
- Protection of Power devices and converters
- Introduction to power semiconductor devices
- Review of P-N diode characteristics
- Volt-Ampere ( i-v ) characteristics of a p-n junction diode
- Construction and characteristics of Power Diodes
- Power Diode under Reverse Bias conditions
- Power Diode under Forward Bias Conditions
- Specifications related to forward bias operation of power diodes
- Switching characteristics of Power diodes
- Parameters defining the turn off characteristics of a Power diode
- Introduction to power BJT
- Basic Operating Principle of a Bipolar Junction Transistor
- Input and Output characteristics of NPN transistor
- Constructional Features of a Power BJT
- Output I-V characteristics of a Power Transistor
- Safe operating areas of a Power Transistor
- Switching characteristics of a Power Transistor
- Turn On characteristics of a Power Transistor
- Turn Off Characteristics of a Power Transistor
- Switching Trajectory and Switching Losses in a Power Transistor
- Base Drive Design of power transistor
- Power Darlington Transistor
- Introduction to Thyristors and Triacs
- Constructional Features of a Thyristor
- Basic operating principle of a thyristor
- Static output i-v characteristics of a thyristor
- Thyristor Gate Characteristics
- Thyristor ratings & Voltage ratings of a thyristor
- Current ratings of a thyristor
- Gate Specifications of a thyristor
- Switching Characteristics of a Thyristor
- Turn on Switching Characteristics of thyristor
- Turn off Switching Characteristics of Thyristor
- Introduction to The Triac
- Construction and operating principle of Triac
- Steady State Output Characteristics and Ratings of a Triac
- Triac Switching and gate trigger circuit
- Features of GTO
- Constructional Features of GTO
- Operating principle of GTO
- Steady state output and gate characteristics of a GTO
- Dynamic characteristics of a GTO
- GTO gate drive circuit
- GTO Ratings - Steady state voltage and current rating
- GTO Ratings - Gate specification & Specifications related to the switching performance
- Features of MOSFET
- Constructional Features of a Power MOSFET
- Operating principle of a MOSFET
- Steady state output i-v characteristics of a MOSFET
- Safe operating area of a MOSFET
- Circuit models of a MOSFET cell
- Switching waveforms of MOSFET
- MOSFET Gate Drive
- MOSFET Ratings
- Features of IGBT
- Constructional Features of an IGBT
- Operating principle of an IGBT
- Steady state characteristics of an IGBT
- Switching characteristics of IGBT
- Gate Drive Circuit of an IGBT
- IGBT ratings and safe operating area
- Soft and Hard Switching & Losses of semiconductors
- Conduction,Blocking & Switching Losses of Semiconductors
- Diode as semiconductor device
- Soft switching of diode

- Introduction to Rectifiers
- Terminologies used in Single Phase Uncontrolled Rectifier
- Single phase uncontrolled half wave rectifier with resistive Load - Circuit Diagram & Waveforms
- Single phase uncontrolled half wave rectifier with inductive load- Circuit Diagram & Waveforms
- Single phase uncontrolled half wave rectifier with capacitive Load - Circuit Diagram & Wave forms
- Split supply Single Phase Uncontrolled Full wave rectifier supplying R-L Load - Circuit Diagram & Waveforms
- Split supply Single phase uncontrolled full wave rectifier supplying a Capacitive Load- Circuit Diagram &Waveforms
- Single phase uncontrolled full bridge rectifier supplying R-L-E Load - circuit diagram &Waveforms
- Single phase uncontrolled full bridge rectifier supplying R-L-E Load -Input Current waveform
- Continuous Conduction Mode and Discontinuous conduction mode
- Single phase fully controlled halfwave rectifier with resistive Load -Circuit Diagram & Waveforms
- Single phase fully controlled halfwave rectifier with R-L Load - circuit Diagram & waveforms
- Single phase fully controlled bridge converter supplying an R-L-E load- Circuit Diagram & Conduction Table
- Operation of single phase fully controlled bridge converter in the continuous conduction mode
- Input current and its fundamental component of a fully controlled bridge rectifier
- Operation of a single phase fully controlled bridge rectifier in DCM
- Inverter Mode of operation in single phase fully controlled converter
- Operating principle of a single phase half controlled bridge converter
- Single phase half controlled converter in the continuous conduction mode
- Variation of average output voltage as a functionof firing angle
- Input current waveform of half controlled converters
- Single phase half controlled converter in the discontinuous conduction mode
- Introduction to Three Phase Uncontrolled rectifier
- Operating principle of three phase half wave uncontrolled rectifier
- Operation of a 3 phase full wave uncontrolled bridge rectifier supplying an RLE load Waveforms
- Operation of a 3 phase full wave uncontrolled bridge rectifier supplying an RLE load Circuit diagram & conduction table
- Operation of a three phase uncontrolled bridge rectifier supplying a capacitive load Circuit diagram & Waveforms
- Introduction to Three Phase controlled bridge converter
- Operating principle of 3 phase fully controlled bridge converter
- Analysis of the 3 phase fully controlled bridge converter in the rectifier mode
- Analysis of the 3 phase fully controlled bridge converter in the inverting mode
- Higher pulse number converters
- Dual converters
- Gate Drive circuit for three phase fully controlled converter
- Operating principle of three phase half controlled converter
- DC-DC Converters
- Operation of single phase fully controlled converter with source inductance- circuit diagram & waveforms
- Three Phase Fully Controlled Converter With Source Inductance
- Power Factor Improvement & Extinction Angle Control
- Symmetrical Angle Control & Pulse Width Modulation Control
- Sinusoidal Pulse Width Modulation (SPWM) Control
- Filters
- Low pass (L-C) filter & Two stage Filter
- Harmonic Reductin,Low pass (L-C) filter circuit on ac side & Active Shaping of Input (line) Current

- DC-DC Converters
- Buck Converters (dc-dc)
- Boost Converters (dc-dc)
- Buck-Boost Converters (dc-dc)
- Control Strategies of DC-DC conversion
- Two mode operation of chopper ( Buck Converter DC-DC)
- Maximum and Minimum Values of the Load Current
- The Duty Ratio (k) for the Limit of Continuous Conduction & The Average Value of the Output Current
- Classification of forced commutation methods
- Class A, Self commutated by resonating the load & Class B, Self commutated by an L-C circuit
- Class C, C or L-C switched by another load carrying SCR & Class D, L-C or C switched by an auxiliary SCR
- Class E - External pulse source for commutation & Class F, AC line commutated
- Rate of rise of forward voltage, dv/dt
- Three phase phase angle converter & Commutation in PAC
- Input voltage waveform distortion & Three-phase converters
- Commutation in DC - DC choppers
- Introduction to regulated dc power supplies
- Linear regulated power supply
- SMPS versus linear power supply
- Types of Power Supplies
- Power supply specifications & some common types of SMPS circuits
- Basic Topology of Fly-Back Converter
- Principle of Operation of fly back converter
- Circuit Equations Under Continuous-Flux Operation
- Circuit Equations Under Discontinuous-Flux Mode & comparison
- A Practical Fly-Back Converter
- Introduction to Forward Type Switched Mode Power Supply
- Principle of Operation of Forward converters
- Modes of Circuit Operation - Forward Type Switched Mode Power Supply
- Relation Between Input and Output Voltage of FTSMPS
- Practical Topology of A Forward Converter Circuit
- Selection of Transformer Turns Ratio, Filter Circuit Inductor and Capacitor
- Analysis of CuK converter
- Expression for average output voltage and inductor currents
- Current ripple and voltage ripple calculations
- The SEPIC Converter
- Introduction to transformers in switched mode
- Governing Equations for Utility Transformer
- Transformer with Square-Wave Voltage and Bipolar Flux
- Transformer with Unipolar Flux
- Design of Inductor-Transformer

- How to Get AC Output From DC Input Supply?
- What If The Load Is Not Resistive?
- General Structure of Voltage Source Inverters
- Need For Isolated Gate-Control Signals For The Switches
- Classification of Voltage Source Inverters
- Harmonic Analysis of The Load Voltage And Load Current Waveforms
- Time Domain Analysis
- Frequency Domain Analysis
- Analysis Of The Single-Phase Full Bridge Inverter
- Voltage And Current Ratings Of Inverter Switches & Applications Of Square Wave Inverter
- Three-phase square wave VSI
- Determination Of Load Phase-Voltages
- Uses & Limitation of 3-Phase Square Wave Inverter
- Nature Of Pole Voltage Waveforms Output By PWM Inverters
- Harmonic Analysis Of Pole Voltage Waveform
- Trade Off Between Low Order And High Order Harmonics
- Brief Description Of Some Popular PWM Techniques
- Two-Level Versus Three-Level PWM Inverters
- Considerations On Switch Voltage And Current Ratings
- Introduction to sine PWM
- Analysis Of The Pole Voltage Waveform With A Dc Modulating Signal
- Pole Voltage Waveform With Sinusoidal Modulating Signal
- Modulation Index & Over-Modulation
- A 1-Phase Sine-PWM Inverter Of H-Bridge Topology
- Generation Of 3-Phase Sine-PWM Waveform
- A Typical Circuit For Generation Of PWM Waveforms
- More Output Voltage From The Same DC Bus Voltage
- Sine + 3rd Harmonic PWM Technique
- Space Vector PWM (SV-PWM) Technique
- Smoothly Rotating Space Voltage Vector From Inverter
- Algorithm For Producing Sinusoidal Output Voltages Using SV-PWM
- Some Other Popular PWM Techniques
- Single-phase Current Source Inverter
- Mode I operation of Single-phase Current Source Inverter
- Mode II operation of Single-phase Current Source Inverter
- Three-phase Current Source Inverter
- Commutation phases of Three Phase CSI
- Advantages and Disadvantages of CSI
- Load-Commutated CSI
- Equivalent circuit of Load commutated CSI
- Characteristics of Load commutated CSI and Output

- Operation of an AC-AC converter with resistive load
- Power Factor of an AC-AC converter with resistive load
- Operation of an AC-AC converter with inductive load
- PAC as a static switch & AC Chopper
- Three-phase, Three-wire AC Regulator with Balanced Resistive Load
- Three-phase Delta-connected AC Regulator with Balanced Resistive Load
- Comparison of the Different Circuits used for Three-phase AC Regulators
- Rating of the Parameters used in Three-phase AC Regulators
- Phase Angle Controller Circuit for Triac-based Single-phase AC Regulator
- TRIAC as PAC
- DIAC as PAC
- Basic Principle of Operation of cyclo-converters
- Single-phase to Single-phase Cyclo-converter Resistive (R) Load
- Discontinuous load current of single phase to single phase cyclo converter Inductive Load
- DC Link Converter
- Three-phase to Single-phase Cyclo-converter
- Continuous load current of single phase to single phase cyclo converter Inductive Load
- Advantages & Disadvantages of Cyclo-converter
- Mode of Operation of a Three phase to Single Phase Cycloconverter
- Cyclo-converter, using two three-phase half-wave converters
- Three-phase to Three-phase Cyclo-converter
- Analysis of the Cyclo-converter Output Waveform
- Control Circuit & Synchronising Circuit for Cyclo-converters
- Reference Voltage Sources
- Logic and Triggering Circuit
- Circuit for Converter Group Selection