This file will contain a MATLAB code that basically displays a figure whenever a range of frequencies are entered within the variables Fn1 to Fn4. One of these will be the Nyquist Variable; the ...

The stability is then analyzed, using the Nyquist criterion, in a straightforward manner. Numerical examples are given by the use of MATLAB. The result is that if the VSC-HVDC system using a single ...

The Nyquist plot is a fundamental tool in the investigation of the stability of control systems. Usually Nyquist polar diagrams are plotted in a linear scale and often, in particular when poles at the ...