Power Electronics Lab


Power electronic circuits are the backbone of almost every modern convenience. Automobiles, cell-phones, laptop and desktop computers, television sets, and kitchen appliances, among many other systems, require power electronics circuits to convert electrical energy to a useful form. This laboratory teaches the techniques for efficiently processing electrical energy into other forms. This gives a experience for the UG and PG students in designing circuits and building and debugging the design of the power electronics circuitry.


Course Objectives



To plot the VI characteristics of SCR
To plot the static characteristics of IGBT & MOSFET
SCR turn-on circuit using synchronized UJT relaxation oscillator.
SCR Digital triggering circuit for a single-phase controlled rectifier and A.C. voltage controller.
Single-phase controlled full-wave rectifier with R and R-L loads.
A.C. voltage controller using TRIAC and DIAC combination connected to R and R-L loads.
Speed control of a separately excited D.C. motor using an IGBT or MOSFET chopper.
Speed control of D.C. motor using single semi converter
Speed control of a stepper motor.
Speed control of universal motor using A.C. voltage controller.
MOSFET OR IGBT single phase full bridge inverter connected to R load.
Study of commutation using LC circuits and auxiliary circuits.


Course Outcomes



Able to understand the working of SCR in forward region.
Able to determine the device parameters such as forward résistance, latching current, holding current.
Able to understand the working of IGBT & MOSFET by calculating thresh hold voltages.
Able to determine the drain resistance, Trans-conductance & amplification factor.
Able to understand and design UJT triggering circuit for half wave & full wave rectifier.
Students will be able to understand the SCR Digital triggering circuit for a single-phase controlled rectifier and A.C. voltage controller.
Students will be able to calculate o/p rms voltage for different values of delay angle.
Students will be able to understand the semi converter for R and R-L loads.
Students will be able to understand the full converter for R and R-L loads.
Students will be able to understand the TRIAC and DIAC combination connected to R and R-L loads.
Able to understand the Speed control of a separately excited D.C. motor using an IGBT.
Able to understand the Speed control of a separately excited D.C. motor using an MOSFET chopper
Able to understand the Speed control of D.C. motor using single semi converter
Students will be able to Speed control of a stepper motor.
Students will be able to Speed control of universal motor using A.C. voltage controller.
Students will be able to understand MOSFET OR IGBT single phase full bridge inverter connected to R load.
Study of commutation using LC circuits and auxiliary circuits.


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Mysore Road, Kumbalagodu,
Bangalore - 560074, Karnataka, India.
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