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Calculate and draw the snubbing network

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Reference no: EM13866432

1. An SCR has the following specifications:

  • VDRM = 800 V
  • VDSM = 1000 V
  • ITM  =  60 A
  • ITSM = 600 A
  • dV/dt = 120 V/μS
  • dI/dt =  100 A/μS
  • IDSM  = IRSM =  70 μA
  • Cj = 60 pF

Calculate and draw the snubbing network for the SCR if it is used in a single phase of a 480 V with a single phase circuit load of 12 kW.  Calculate components by the resonant method.

2. Draw and explain the best forced current sharing method for parallel SCRs.  Also explain why forced current sharing is necessary.

3. The circuit below has an input line voltage of 480 V rms, and a highly inductive load.  Calculate the output voltage at α = 45 0, 900, and 1350.

2222_Calculate the output voltage.jpg

4. Repeat Problem 4 for the circuit shown below.

354_circuit Diagram 1.jpg

Reference no: EM13866432

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