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Hi, I am performing a simple work to evaluate the transitory stability of the system shown attached when a three-phase fault happens in the substation S. Osorio. Due to this fault three-lines shown in the picture have been cut off from the system. Now the system lost its synchronism, I need to...

Hey guys is that possible to connect a single-phase pv system to a three-phase grid? If yes, how will it work? I mean, it can only be connected neutral-phase or between two phases. Will it supply only single phase load? And the surplus energy, does it can be delivered to the grid? Will it...

Hey guys I'm trying to perform a simulation in Matlab/Simulink to see the frequency variation with a load increase. I'm putting a AC voltage source behind a RL impedance with a PI model of the line. The first load is a RLC parallel load with P= 6kW Ql=1000 var and Qc=-1000 var. The second...

Hi guys, I'm trying to perform a project using PEM Fuel Cells, but I still don't know what approach I can give on this. I need an electrical approach. First I was thinking of using a fuel cell as a DG acting together with a three-phase inverter to provide active power to the grid...

Hi, I'd like to know how a IGBT works with a pulse generated by a pulse amplitude modulator (PAM). For me the amplitude of the pulse sent to the gate of igbt serves only to trigger it. I don't know how varying the amplitude can make any difference in the output waveform.

Does someone have any simulation of pi or pid controller to control the supply of oxygen in a fuel cell?

Hi guys I'm trying to perform a PD controller using simulink, but the result is different from the one I found using Matlab. First I've calculated y(t) of the system, where y(t) is the output. Then I ploted y(t) x t.