Basics of Power Electronics in tamil

OBJECTIVES: POWER ELECTRONICS

*Explain the scope and application of power electronics.

*Explain the operating region and rating of SCR.

*Draw, explain and state the application for commutation circuits and trigger circuits of SCR.

*Familiarize the phase controlled rectifier and know the applications of the phase controlled rectifier.

*Draw and describe the working of half wave controlled rectifier circuit with R and RL load, single phase Semi Converter Bridge, Single phase full Converter Bridge for RL load, single phase and three phase full converter with RL load.

*Familiarizes the dual converter and twelve pulse converters.

*Study the complete protection of converter circuits.

*Understand the working choppers and inverters.

*Know the applications of choppers and inverters.

*Explain the various types of choppers with circuit diagram.

*Describe the various methods of inverters with circuit diagram.

*Failure of AC voltage controller & cyclo converter.

*Understand the application of power electronics devices as CB,UPS and VAR compensator Understand the control of DC Drives.

*Know the various methods of speed control of DC drives. Familiarize the control of AC drives.
Know the torque - speed characteristics of three phase induction motor.

*Study the speed control of three phase induction motor using PWM and slip power recovery scheme.

*Understand the closed loop control of AC drive. Know the operation of single phase and three phase cyclo converter.

*Understand the micro controller based fault diagnosis in three phase thyristor converter circuits.

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