Power Electronics Converters and Applications Laboratory
Test the proper functioning of power electronic switches SCR, IGBT, SCS and TRIAC.
Testthe properfunctioning of DIAC to determine the break over voltage.
Determine the latching current and holding current using V-I characteristics of SCR.
Testthe variation of R, C in R and RC triggering circuits on firing angle of SCR.
Testthe effect of variation of R, C in UJT triggering technique.
Perform the operation of Class A, B, C turn off circuits.
Perform the operation of Class D, E, F turn off circuits.
Use CRO to observe the output waveform of half wave-controlled rectifier with resistive load and determine the load voltage.
Use CRO to observe theoutputwaveformof Fullwave-controlledrectifierwithRload,RL load,freewheeling diode and determine the load voltage.
Determine the firing angle using DIAC and TRIAC phase-controlled circuit on output power under different loads such as lamp, motor or heater
Simulate above firing angle control on SCILAB software
Perform speed control of DC series / DC separately excited motor using SCR.
Perform speed control of 3-phase Induction motor using PWM inverter. Interpret speed-torque characteristics. Use variable voltage variable frequency drive.