POWER Electronics
Preamble:
The usage of power elctronics in day to day life has enhanced in recent years. it’s necessary for student to know the basic principles behind of these converters. This course covers characteristics of semiconductor devices, ac/dc, dc/dc, ac/ac and dc/ac converters. The importance of victimization pulse breadth modulated techniques to get prime quality power provide (dc/ac converter) is additionally mentioned very well during this course.
Learning Objectives:
• to check the characteristics of assorted power semiconductor devices and to style firing circuits for SCR.
• to know the operation of single part full–wave converters and analyze harmonics within the input current.
• to check the operation of 3 part full–wave converters.
• to know the operation of various styles of DC-DC converters.
• to know the operation of inverters and application of PWM techniques for voltage management and harmonic mitigation.
• to investigate the operation of AC-AC regulators.
UNIT–I:
Power Semi-Conductor Devices Thyristors–Silicon controlled rectifiers (SCR’s) –Characteristics of power MOSFET and power IGBT– Basic theory of operation of SCR–Static characteristics– activate and switch off methods–Dynamic characteristics of SCR– Snubber circuit design– Basic necessities of gating circuits for SCR, IGBT and MOSFET.
UNIT–II:
AC-DCSingle-Phase Converters 1-phase [*fr1] wave controlled rectifiers – R load and RL load with and while not freewheeling diode – 1-phase full wave controlled rectifiers – center tapped configuration and bridge configuration- R load and RL load with and while not freewheeling diode – continuous and discontinuous conductivity – result of supply inductance in 1-phase totally controlled bridge rectifier with continuous conductivity.
UNIT–III:
AC-DC3-Phase Converters 3-phase [fr1] wave and Full wave uncontrolled rectifier – 3-phase [fr1] wave controlled rectifier with R and RL load – 3-phase totally controlled rectifier with R and RL load – 3-phase semi controlled rectifier with R and RL load.
UNIT–IV:
DC–DC Converters Analysis of Buck, boost and buck, buck-boost converters in ContinuousConduction Mode (CCM) and Discontinuous conductivity Modes (DCM) – Output voltage equations victimization voltsec balance in CCM & DCM output voltage ripple current, ripple for CCM solely – Principle operation of forward and fly back converters in CCM.
UNIT – V:
DC–AC Converters 1- part halfbridge and full bridge inverters with R and RL masses – 3-phase sq. wave inverters – 1200 conductivity and 1800 conductivity modes of operation – PWM inverters – Quasi-square wave pulse breadth modulation – curved pulse breadth modulation – interference of shoot through fault in Voltage supply electrical converter (VSI) – Current supply electrical converter (CSI) – Introduction to motor vehicle ordered Commutated Current supply electrical converter (ASCCSI) .
UNIT – VI:
AC – AC Regulators. Static V-I characteristics of TRIAC and modes of operation – 1-phase AC-AC regulator point management and integrated cycle management with R and RL load – For continuous and discontinuous conduction- 3-Phase AC-AC regulators with R load solely – electrical device faucet ever-changing victimization parallel Thyristors.
Learning Outcomes:
Student ought to be ready to
• justify the characteristics of assorted power semiconductor devices and analyze the static and dynamic characteristics of SCR’s.
• style firing circuits for SCR.
• Explain the operation of single part full–wave converters and analyze harmonics within the input current.
• justify the operation of 3 part full–wave converters.
• Analyze the operation of various styles of DC-DC converters.
• justify the operation of inverters and application of PWM techniques for voltage management and harmonic mitigation.
• Analyze the operation of AC-AC regulators.
Text Books:
one. Power Electronics: Circuits, Devices and Applications – by M. H. Rashid, learner Hall of Bharat, 2d edition, 1998
2. Power Electronics: necessities & Applications by L.Umanand, Wiley, Pvt. Limited, India, 2009
Reference Books:
one. components of Power Electronics–Philip T.Krein.oxford.
2. Power natural philosophy – by P.S.Bhimbra, Khanna Publishers.
3. Thyristorised Power Controllers – by G. K. Dubey, S. R. Doradla, A. Joshi and R. M. K.Sinha, New Age International (P) restricted Publishers, 1996.
4. Power natural philosophy reference work by Muhammad H.Rashid, Elsevier.
5. Power Electronics: converters, applications -by Nedmohan, Tore M. Undeland, Jerome Robbins by Wiley Bharat Pvt. Ltd.
6. Power convertor Circuits -by William Shepherd, Li zhang, CRC Taylor & Francis cluster.