The single-phase full-bridge inverter shown below is operated in the quasi-square-wave (QSW) mode (phase displacement control) at the frequency f= 100 Hz, with phase shift between half-bridge output voltages Va and vb. The load is an R-L load with R=10 2 and L = 20 mH. (a) Find so that the fundamental amplitude of the load voltage v, is 200 V. (b) For B= /2 sketch v, and i, (approximately). (c) For = /2 find the total average power supplied to th load. + V= 200 V V0 Vo load Vb0 JL.