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Unformatted text preview: Power Systems I Solving Nonlinear ODE Objective Time domain solution of a system of differential equations Given a function or a system of functions: f ( x ) or F(x) Seek a time domain solution x ( t ) or x( t ) which satisfy f ( x ) or F(x) Integration of the differential equations Linear equations  Closed form solutions: Laplace transforms Nonlinear equations  Frequently no closed form solutions: Numerical integration Taylor Series Euler RungaKutta Power Systems I Solving Nonlinear ODE Taylor Series Consider Then by expansion = = = + + + + + = + t c c x k x t c t c c x k x t c t c t c k x k x x h x h x h x h x h t x iv 3 2 1 2 3 2 1 1 3 3 2 2 1 2 1 6 2 3 2 ! 4 ! 3 ! 2 ) ( ) ( x f dt dx = Power Systems I Solving Nonlinear ODE Eulers Method First term of the Taylors series only is used ( ) ( ) k k k k k k k k x kh x t x h k c h k c kh c c x c h x t c t c t c c x c h x x h t t t c t c t c c x c x t c t c t c c x c x x y h t e x h x h t x = + = + = + = = = + + + + + + = + + = + + + ) ( ) ( ) ( ) , ( ) ( 3 3 30 2 2 20 10 00 01 3 30 2 20 10 00 01 1 1 3 30 2 20 10 00 01 3...
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This note was uploaded on 02/01/2012 for the course EEL 4213 taught by Professor Thomasbaldwin during the Fall '11 term at FSU.
 Fall '11
 THOMASBALDWIN

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