Q:

The circuit of Fig. E1.1.1 represents a phase-controlled, three-phase thyristor rectifier. The balanced input line-to-line voltages are v _ab = 240 sin ?t, v _bc = 240 sin( ?t ? 120 ), and v _ca = 240 sin( ?t ? 240 ), where ? = 2 ?f and f = 60 Hz. Each of the six thyristors can be modeled by a self-commutated electronic switch and a diode in series, as is illustrated in Fig. E1.1.2. Use the following PSpice models for the MOSFET and the diode:

• Model for self-commutated electronic switch (MOSFET):

  • .model SMM NMOS(Level = 3 Gamma = 0 Delta = 0 Eta = 0 Theta = 0 Kappa = 0 Vmax = 0

  • + XJ = 0 TOX = 100 N UO = 600 PHI = 0.6 RS = 42.69 m KP = 20.87 u L = 2 u

  • + W = 2.9 VTO = 3.487 RD = 0.19 CBD = 200 N PB = 0.8...