Controller Design of Voltage Source Converter Using Nyquist Array

In this paper a controller is designed for voltage source converters (VSC) using Nyquist array. Real systems existing in industry are nonlinear systems with multiple inputs and multiple outputs (MIMO). Such systems are always affected by different undesired factors like noise and distortion. But multivariable control design for linear systems is based on theories which are robust against noise, disturbances and uncertainties. DC and AC part of VSC are affected with disturbances which should be controlled. Thus, a Nyquist array is applied to VSC to study design and analysis of multivariable control based on the presented theories. The proposed controller is illustrated by simulation.

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