(Solved): *4. a) Suppose a full-bridge square wave inverter has an RL load with R=15\Omega and L=20mH. The in ...

*4. a) Suppose a full-bridge square wave inverter has an RL load with

and

. The inverter's switching frequency is

and the dc input voltage is

. Express the load current, io( t ), in Fourier series and calculate THD. Also, Calculate the power absorbed by the load and the fundamental frequency component of the power. b) For a three-source seven-level inverter, write down the design equations needed to select values of

, and

such that the third and fifth harmonic frequencies