Variable Step Size IC MPPT Controller for PEMFC Power System Improving Static and Dynamic Performances

Fuel Cells ◽  
2017 ◽  
Vol 17 (6) ◽  
pp. 816-824 ◽  
Author(s):  
A. Harrag ◽  
S. Messalti
Keyword(s):  
Power System ◽  
Variable Step Size ◽  
Step Size ◽  
Variable Step ◽  
Dynamic Performances ◽  
Mppt Controller

Power System Stability Computer Simulation Using a Differential-Algebraic Equation Solver

2005 ◽  
Vol 4 (2) ◽  
Author(s):  
Jose Eduardo Onoda Pessanha ◽  
Osvaldo Saavedra ◽  
Alex Paz ◽  
Carlos Portugal
Keyword(s):  
Computer Simulation ◽  
Power System ◽  
Time Domain ◽  
Differential Algebraic Equations ◽  
System Stability ◽  
Variable Step Size ◽  
Variable Order ◽  
Differential Algebraic Equation ◽  
Step Size ◽  
Variable Step

The preset work tested a freely domain software for solving index zero and one systems of differential-algebraic equations, named as DASSL. The code encompasses an efficient variable step size and variable order based on BDF methods to solve a system of DAEs or ODEs. The code was applied in power systems time domain studies, i.e., synchronous machine angular transient stability and long-term voltage stability, using the Brazilian South-Southeast Equivalent Power System. Using this real power system model including fast and slow response control devices, it was possible to investigate the code capability in simulating different stability phenomena in the same run. The variable step size and variable order algorithm implemented in DASSL results in a very powerful tool for power system time domain computer simulation.

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