Single PWM Technique

Example $2$:

Consider a full$-$bridge single$-$phase inverter with input voltage equal to $400$ V $.$ This inverter is controlled by single PWM technique to generate a $3-$level half$-$wave symmetry waveform with amplitude and frequency of fundamental frequency equal to $220\sqrt[\phantom{2}]{2}$ and $50$ Hz $,$ respectively.

a$)$ Draw its power circuit.

b$)$ Obtain its switching table.

c$)$ Calculate the width of each generated pulses at the output voltage.

d$)$ Calculate the amplitude modulation index.

e$)$ Calculate the RMS value of output voltage.

f$)$ Draw the waveforms of reference and carrier signals.

g$)$ Obtain the waveform of output voltage.

h$)$ Design the trigger signals of switches.