This paper presents an investigation of a voltage and frequency controller for an isolated asynchronous generator (IAG) driven by a wind turbine and supplying 3-phase 4-wire loads to the isolated areas where a grid is not accessible. The control strategy is based on the indirect current control of the VSC (voltage source converter) using the frequency PI controller. The proposed controller cons...

During the last three decades, reliability analysis of power systems considering transformers, breakers, transmission lines, and generators failure has been widely applied. This analysis has been done especially in the generation and transmission levels and is mainly restricted to high voltage alternating current (HVAC) systems. HVDC transmission systems are becoming increasingly popular when c...

A tutorial account of variable structure control with sliding mode is presented in this paper. The purpose is to introduce in a concise manner the fundamental theory, main results, and practical applications of this powerful control system design approach. This approach is particularly attractive for the control of nonlinear systems. Prominent characteristics such as invariance, robustness, ord...

With the advance of insulated gate bipolar transistor (IGBT) converters, Multi-Terminal DC (MTDC) based on the voltage-source converter (VSC) has developed rapidly in renewable and electric power systems. To reduce the copper loss of large capacity and long distance DC transmission line, an improved droop control design based on optimal power sharing in VSC-MTDC integrating offshore wind farm i...

This article presents an energy regulator based on a Model Predictive Control (MPC) algorithm for Voltage Source Converter (VSC). The MPC is formulated to optimise the converter performance according weights defined in objective function that trades off additional features, such as current harmonic distortion, reactive power tracking and DC bus voltage oscillation. Differently from most approac...

In this paper three leg Voltage source converter (VSC) based Hybrid Active Power filter (HAPF) is proposed for existing problems of harmonics, reactive power compensation, high total harmonic distortion (THD) and Power factor improvement for three phase non linear loads. In the system, a hybrid active power filters which is the combination of active filter and passive filter. The reference curr...

The Esprit VISCOUNT project was formed by a consortium of European industrial and academic partners. It seeks to exploit emerging distributed object technologies to develop a Virtual Software Corporation (VSC) a geographically distributed software development environment populated with the next generation of CSCW software engineering tools. The central technical objective of the VISCOUNT projec...

The characteristics of Static Synchronous Series Compensator (SSSC) based on six-pulse Voltage Source Converter (VSC), which is inserted in series into a three phase inductive system, are analyzed and calculated in detail in its inductive and capacitive operation modes, including the AC, DC current and DC capacitor voltage in one period. And the expressions for them are derived in order to asse...

The world of very small companies (VSC) is characterized by a great diversity in terms of quality and behavior. Consequently, the principles for economic evaluation used today on medium to big sized companies cannot directly be used on VSC that must be grouped with companies of similar behavior. The purpose of the present study, conducted for the French Ministry of Finance, was to find an origi...

This paper proposes Fuzzy Logic Based STATCOM. It regulates the voltage at the point of common coupling (PCC) by injecting reactive power. This device also plays a vital role in enhancing stability for small and large transient disturbances in power system. Simulations using MATLAB / SIMULINK are carried out to verify the performance of STATCOM using fuzzy controller. The result shows that fuzz...