HP an 1293 free download

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Sequential Shunt Regulation Application Note 1293 Regulating Satellite Bus Voltage Figure 1 SAS Satellite + HP-IB SAS #1 Control - Battery Control Load Bus CKT Cap + Control SAS #2 Control Signals - Figure 2 I Isc + Imp Pmp SAS #N Control - RL Vmp Voc V The sequential shunt regulator is example, let's assume operation Figure 2 widely used for regulating the at the maximum power point. Isc= short circuit current satellite bus voltage. A simplified When the shunt is open, the Imp= current at the maximum power sequential shunt concept is current to the load will be Imp Vmp= voltage at the maximum power shown in Figure 1. (current at the maximum power Voc= open circuit voltage The HP E4350B/E4351B Solar point). When the shunt is closed, Pmp= maximum power point Array Simulators (SAS) are ideal the current in the shunt is Isc RL= load line for this type of application. (short circuit current). Figure 3 Operating in this mode, the shows the output waveforms current either flows into the load across one SAS. The output or into the shunt control FETs. current of the SAS is basically The shunt control FET will be constant because the difference referred to as the shunt or the between Imp and Isc is usually switch for the remainder of the small but the voltage changes paper. Figure 2 shows a typical from a short (switch on) to Vmp solar array I-V curve. As an (switch off). Figure 3