A VSI connects a large battery storage system to an ac utility grid. One phase of the circuit is shown in Figure 5.47. The inverter bridge has relative phase angle 8 and is set so its wanted component lags the ac voltage by an angle o. For 8 = 45° and 6 = -30°. what is the average power per phase flowing to the ac source? What if Ø = + 30°? HIA L = 40 mH 2400 V lour 2000 V ms 60 Hz FIGURE 5.47 VSI to interface between a large battery and a 2000 V 60 Hz source.