$1.$ Specify a suitable PWM switching frequency, a line inductance $\backslash ($ L $\backslash )$ and a DC link voltage for the inverter. Comment on the specifications. What is the minimum dc$-$link voltage required for the inverter to grid connection requirment?

$2.$ Explain how the PWM signals are generated.

$3.$ Present the output current and voltage waveforms. Comments on the effects of the switching frequency and the inductor on the ripple $($THD$)$ of the output current.

$4.$ How to achieve $6$ A $($RMS$)$ output current with a leading output power factor of $0\mathrm{.}866$ for the inverter? Present the output current and voltage waveforms.

$5.$ Assume $\backslash (\backslash$pm $10\backslash \%\backslash )$ variation for the grid voltage, what is the minimum DC link voltage required for the grid connection?

Figure $2$