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Gert Kruger


Last seen: environ un mois ago
22 total contributions since 2015

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Submitted


Resonant DC-link inverter simulation models
Various resonant DC-link inverter simulation models are explored using different controllers.

5 mois ago | 6 downloads |

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Submitted


PV array with algebraic loop broken
PV array with filter corrected to solve the algebraic loop problem.

environ un an ago | 62 downloads |

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Answered
algebraic loop problem in PV array block
The reason why there is an algebraic loop: The V-Filter and I-Filter in the model, for the computation of Vd, is supposed to br...

environ un an ago | 0

| accepted

Answered
Algebraic loop error in PV panels (in filter block)
The reason why there is an algebraic loop: The V-Filter and I-Filter in the model, for the computation of Vd, is supposed to br...

environ un an ago | 0

Answered
How to initialize outpt of a matlab function block in simulink to zero
You can add a persistent variable and check if it is empty. If it is empty, then it means it is the first time the Matlab functi...

environ un an ago | 0

Answered
How to solve algebraic loop error??
PV panel model with fixed algebraic loop: https://www.mathworks.com/matlabcentral/fileexchange/71682-pv-array-with-algebraic-loo...

environ un an ago | 0

Answered
How to connect two power grids in SimPowerSystem through DC_link?
Sorry, this answer is four years late: The 3-phase voltage sources you used to represent the grids are both tied to ground, t...

plus d'un an ago | 0

Answered
Matrix interpolation in the direction of the third dimension
Here is my attempt at answering your question. I imagine that there are N matrices each with size nxn. Example matrices: %% n...

plus d'un an ago | 1

Submitted


Newton-Raphson reciprocal approximation , 1/x and 1/sqrt(x)
The Newton-Raphson approximation of the reciprocal, i.e. 1/x and square root reciprocal is provided along with accuracy testing ...

plus d'un an ago | 1 download |

Answered
why PV panels gives algebraic loop errors?
The provided suggestion of the unit delay is a work around, but it does not provide the reason for the presence of the algebraic...

plus d'un an ago | 2

Submitted


On-line simplex search
A reentrant version of the well-known Simplex search (Nelder-Mead) optimization is provided.

plus d'un an ago | 2 downloads |

Solved


Create a square matrix of multiples
Given an input, N, output a matrix N x N with each row containing multiples of the first element of each row. This also applies...

plus d'un an ago

Solved


Is my wife right?
Regardless of input, output the string 'yes'.

plus d'un an ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

plus d'un an ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

plus d'un an ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

plus d'un an ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

plus d'un an ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

plus d'un an ago

Solved


Add a block to a model
Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/add-block-eqn.png>> In this case, the slope of...

plus d'un an ago

Solved


Connect blocks in a model
Connect the blocks in the model to produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/connect-blocks...

plus d'un an ago

Submitted


Real time tunable filters
A library of first and second order filters whose parameters can be tuned in real-time.

presque 3 ans ago | 7 downloads |

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Answered
Can matlab give me difference equation from transfer fucntion
syms z; H = (1-z^-1) / (1-3*z^-1+2*z^-2); [N, D] = numden(H); Nc = eval(coeffs(N)); %Get coeffs and evaluatle symbolic ...

environ 5 ans ago | 1