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This paper presents modelling, simulation and analysis of novel control strategies for variable speed wind turbines driven by a Permanent Magnet Synchronous Generators (PMSG) connected to the grid. The machine side controller is designed to match Maximum Power Point Tracking (MPPT) to obtain high extraction of wind power while connected to a the grid, and the grid side controller fixes the DC voltage...
This paper proposes two effective maximum power point tracking (MPPT) algorithms for two different wind energy conversion systems connected to the grid using permanent magnet synchronous generator (PMSG). The wind turbine (WT) is connected to the grid via back-to-back PWM-VSC for the first scheme, whereas, the WT is connected to the grid via diode-bridge rectifier, boost converter and the grid side...
The paper presents a model of direct driven wind electric generator (WEG) integrated to grid. Higher efficiency, less maintenance and better performance of the direct driven Permanent magnet synchronous generator (PMSG) make it most attractive among wind electric conversion systems. Pitch angle controlled variable speed wind turbine, PMSG and a back to back converter for optimum operation under integrated...
A new converter topology for a permanent magnet synchronous generator based variable speed wind turbine is presented in this paper. Main focus is on a combined topology of a controlled rectifier and a brand new step-up isolated DC/DC converter. This topology (controlled rectifier coupled with a quasi-Z-source based galvanically isolated step-up DC/DC converter) is essential to generate a regulated...
With the growing of electrical energy demand, wind energy gains higher potential and plays a vital role in energy sectors. Direct driven permanent magnet synchronous generator (PMSG) with a full size back-to-back converter set is one of the promising technologies employed with wind power generation. This paper focuses on developing a control scheme of PMSG-based wind turbines to obtain maximum wind...
This paper proposes a new control strategy using less number of sensors for variable speed wind energy conversion system (WECS). Maximum Power Point Tracking (MPPT) algorithm, and near unity power factor correction control (UPF) are achieved at the generator side using direct driven Permanent Magnet Synchronous Generator (PMSG). The PMSG operates at variable wind speed connected to a full controlled...
The paper studies the performance of variable speed wind turbine (VSWT) configuration with non-inverting buck-boost converter. The wind turbine systems consist of permanent magnet synchronous generator (PMSG) connected to diode rectifier, DC chopper and load. New control strategy, based on the maximum power point tracking (MPPT) and limited power point tracking (LPPT) algorithms is used to improve...
This paper presents the dynamic operation and control strategies of a hybrid wind-diesel-battery energy storage based power supply system for isolated communities are investigated. Control strategies for voltage and frequency stabilization and efficient power flow among the hybrid system components are developed. The voltage and frequency of the hybrid wind-diesel system is controlled either by a...
This paper presents a Model Reference Adaptive Control (MRAC) approach for a Wind Energy Conversion System (WECS) to track the maximum power point. This WECS includes a permanent magnet synchronous generator (PMSG) fed by a matrix converter. Since the mechanical power generated by the wind turbine is a function of its shaft speed at a given wind velocity, the proposed controller provides the desired...
In this paper, two three-phase three-level neutral point clamped (NPC) converters connected back-to-back are used for a direct drive wind power generator. A permanent magnet synchronous generator (PMSG) is used as the generator, which is driven by the wind turbine. Main problem of voltage unbalance in each electrolyte capacitor is controlled by using a simple chopper control circuit. A simple hardware...
In the high power direct drive wind energy conversion systems, the power factors of both the generator-side converter and the grid-side converter are controlled to one in order to make full use of the capability of the power converters. In this paper, a novel sensorless unity power factor control method based on the reference coordinate system rotating synchronously with the voltage of the generator-side...
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