Q4- Below figure shows a single phase semi-converter circuit. Assume the output current is constant and ripple free. For a thyristor firing angle of
\alpha , a) Sketch
v_(0),i_(s),i_(D1),v_(r1)waveforms, b) Indicate the devices in conduction, design, d) Derive an expression for the average output voltage, e) In this converter, the fundamental component of the
ACside current can be controlled independent of the DC current. Explain how this is possible.
