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The influence of constant speed wind turbine in an electrical network during torque impact can lead various problems. The disturbances affect active power quality, reactive power and r.m.s. phase to phase voltage. In this paper, we propose an original system and control to solve firstly, the problems due to the brutal impact of active power and secondly the control of reactive power. The principle...
Wind turbine with proportion of its design and control concept, can produce electricity in different actual mode. This enables turbine to show a certain reaction in different faults. This operation, can be analyze and provide a suitable plan for construct, and also add to turbine control mechanism as necessity. The main goal of this paper is analyzing the stability of a fixed-speed wind turbine during...
In this paper, analysis of single-stage ac/dc converter for small-scale wind power generation system is proposed. The harmonic currents of wind generator are reduced so as to decrease the wind turbine noise. The proposed three-phase wind converter has zero-voltage switch in the active switches. Compared with a traditional two-stage converter, high efficiency and high step-up voltage ratio are also...
With increasing demand for energy, there is a growing tendency to employ renewable sources such as wind energy. Using large amounts of energy from wind arouses critical issues such as voltage variation and poor quality power supply. Several papers have been published on suggestions to improve performance of wind turbines during grid fault; however, to the authors' knowledge only a few papers address...
This paper proposes a hybrid parallel three-level converter topology for large wind turbine generation (WTG) systems and its control method. The proposed topology focuses on a machine side of a back-to-back converter. It consists of one conventional three-level neutral-point clamp (NPC) converter and numerous reduced-part converters, which are connected in parallel depending on rated power of a WTG...
The use of grid codes to supply energy means that wind turbines must connect to grids under both normal and abnormal conditions. It is therefore necessary to implement a fast and efficient method to enable a wind turbine to safely carry through in faulty conditions. This paper employs an optimized double decouple synchronous reference frame phase locked loop (ODDSRF-PLL) to correctly detect the amplitude...
This paper presents a review of modulation and control strategies for matrix converters applied to permanent magnet synchronous generator (PMSG) in wind power generation systems. Modulation techniques already discussed in scientific literature for the command of matrix converters are mostly divided into three categories: the scalar modulations, the pulse width modulations and the predictive control...
In islanding mode, the surge current during startup and shutdown of asynchronous wind turbine and its power fluctuations can be a significant challenge to the stable operation of micro-grid. Energy storage based micro-grid stability controller has been proved effective for micro-grid control. This paper analyses the performance of the micro-grid stability controller considering its capacity, the control...
In recent years, emphasis has been given on Renewable Energy based Microgrid (μGrid) systems because of their few advantages over Micro-generation (μGen) systems in terms of power quality, stability, reliability, economics etc. But the commercial installation of μGrid system is not yet progressing significantly. This paper presents the techno-economic aspects of μGen and μGrid system towards the sustainability...
This paper describes a design of a wind turbine pitch controller based on the disturbance accommodating control (DAC) theory. Wind turbine systems generally operate under stochastic environments, such as random wind inputs and noise corrupted sensor signals. Especially wind inputs can be treated as persistent disturbances and DAC can play a role in reducing effects of wind disturbances. By doing this,...
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