Syllabus: Power Electronics, Sem- 4th, Course: BE (EE)

SUBJECT: POWER ELECTRONICS 

SEMESTER- 4th Subject Code: 3TBEX 405

Course: BE EE Theory Max. Marks: 50, Theory Min. Marks: 17

COURSE OBJECTIVE:

  • To provide the students a deep insight into the working of different switching devices concerning their characteristics
  • To analyze different converters and control their applications.
  • To study advanced converters and switching techniques implemented in recent Technology.

Syllabus:

  • Unit – I Advantages and application of power electronic devices characteristics, Symbol & application of power diodes, power transistors, GTO, Triac, Diac, Power MOSFET, IGBT, LASCR, Fast recovery diode, Schottky diode MCTs. Principle of operation of SCR, two transistor analogy, brief idea of construction of SCR, Static characteristics of SCR, Condition of turn on & off of SCR. Gate characteristics, Method for turning on of SCR, Turnoff methods, different commutation techniques (Class A, B, C, D, E, & F Commutation) firing of SCR, Use of pubic transformer and op to isolator in firing, Resistance firing Ckt, Resistance capacitance firing circuit, UJT firing cut, and ramp triggering, firing for 3-Φ circuit. SCR rating & protection of SCR over voltage, over current, Superior firing, Design of Snubber circuit and protection of gate of SCR, heating, cooling & mounting of SCR series and parallel operation of SCR, String efficiency & problems associated with series and parallel operation of SCR.
  • Unit – II Operation and analysis of single phase (Half wave & Full Wave) and multiphase (Three Phase) uncontrolled and controlled rectifier circuit with resistive, resistive & inductive load (continuous & non-continuous conduction, few small & very large inductive loads) and RLE loads. Estimation of average load voltage and load current for above rectifier circuits active and reactive power input. Effect of freewheeling diode and source inductance on the performance of these rectifier circuits. Comparison of mid-point& Bridge rectifier circuits.
  • Unit – III Series and parallel inverter, Voltage source & current source inverter, Single phase and three phase bridge inverter, Self-cumulated inverters, Mc- Murray& MC Murray bed ford inverters, Voltage control of single phase and three phase bridge inverter, Harmonics & their reduction techniques.
  • Unit – IV Principle of chopper operation, Various control strategies in chopper, step up & step-up/step down choppers, chopper configuration (Type A, B, C, D, & E), Steady state analysis of chopper circuits, Current & voltage commutation of chopper circuits Jones & Morgens chopper
  • Unit - V Single phase (mid-point& bridge configuration) and three phase cyclo convertor configuration and operating principles. AC voltage controllers (using SCRs &Traics) single phase full wave controller with R and RL load, Estimation of RMS load voltage, RMS load current and input power factor, three-phase AC voltage controller (Without analysis) Dual converter Switched mode voltage regulator buck, book & Boost, Ck regulators.

Course Outcome:

At the end of the course, students will have the ability to

  • Articulate the basics of power electronic devices
  • Express the design and control of rectifiers and inverters.
  • Design of power electronic converters in power control applications
  • Ability to express characteristics of SCR, BJT, MOSFET and IGBT.
  • Ability to express communication methods.
  • Ability to design AC voltage controller and Cyclo Converter.
  • Ability to design Chopper circuits and inverter circuits.

List of Experiments:

  • VI characteristics of SCR
  • VI characteristics of DIAC
  • VI characteristics of BJT
  • Characteristics of TRIAC
  • VI characteristics of MOSFET transfer characteristics of MOSFET
  • Output characteristics of IGBT
  • Transfer characteristics of IGBT
  • Single phase SCR half-controlled converter with R load
  • 1Φ SCR fully controlled converter with R-load
  • Study of 3Φ SCR half-controlled converter
  • Study of 3Φ SCR fully controlled converter
  • Study of classes of commutation A, B, C, D, E, F.

Text Books:-

  1. Power Electronics by S.N. Singh
  2. Dr. P.S. Bhimbhra, Power Electronics, Khanna Pub

Reference Books:

  1. M.H. Rashid, Power Electronics Circuits, Devices and Applications, Pearson Education, Singapore, 1993.
  2. POWER ELECTRONICS HANDBOOK, MUHAMMAD H. RASHID
  3. M Ramsmoorthy, An Introduction to a transistor and their application, Affiliated East-West Press.
  4. P.C. Sen, Power Electronics, TMH. M.D. Singh, K.B. Khanchandani, Power Electronics, TMH, Delhi, 2001.
  6. Chakravarti A., Fundamental of Power Electronics and Drives, Dhanpat Ray & Co.,
  7. Vedam Subramanyam, Power Electronics New Age International Revised II ed. 2006.
  8. Randall Shaffer, Fundaments of Power Electronics with MATLAB Cengage Leaening 2008.

Job Opportunity:- Design Engineer

Employability Skill Developed:- performance and controlling skill of electrical machines


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