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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...
In this paper, a new control strategy is proposed to improve the performance of a wind generator system composed of a three-phase PMSG and a Back-to-Back three-phase to single phase converter. With the use of the large inductance of the synchronous generator, the control method minimizes the generator torque ripple when the system supplies a single-phase load. The problem arises from the fact that...
In this paper, we present a performance study of a variable pitch wind turbine with a Permanent Magnet Synchronous Generator (PMSG). The control strategy used Maximum Power Point Tracking (MPPT) below the rated speed, which corresponds to low and high wind speed, and the maximum energy can be captured from the wind. The Pitch angle control which is the most common means for adjusting the aerodynamic...
This paper analyses the behaviour of a full-converter wind generation system with a back-to-back conversion structure using Neutral Point Clamped (NPC) converters during network faults. A Permanent Magnet Synchronous Generator (PMSG) is used as the generator. The main problems of this structure during voltage sags are firstly, the accumulation of power in the DC-link due to the reduction of power...
This paper presents a novel Adaptive Network-Based Fuzzy Inference System(ANFIS) for the optimal control of permanent magnet synchronous generator (PMSG) to extract maximum power without the need of speed & position sensors or any complex estimating algorithm. The control algorithm determines the optimal value of torque controlling current component as a function of change in output power. The...
The paper presents a control strategy for a wind energy conversion system (WECS) for an optimal extraction of power from the wind. The topology of the system consists of a permanent magnet synchronous generator (PMSG), a diode bridge rectifier, a hybrid dc-dc converter which lowers the dc voltage, a supercapacitor and an inverter. However, the grid side inverter is not subject to this paper research...
When the wind speed is between the cut-in and the rated wind speed, the generator control aims at maximum energy capture. The third-order nonlinear model of the Permanent magnet synchronous generator (PMSG)-based wind power conversion system (WECS) is established. In order to ensure maximum energy capture under rated wind speed, firstly, the nonlinear model is linearized around different operating...
In order to get the maximum power from the wind, the variable-speed turbine should run at different speed when wind speed changes.The dynamic characteristics of the control system must be properly defined and designed to achieve satisfactory generated power quality and system security, availability and reliability. Therefore great attention has to be kept in the theoretical design task, as well as...
The main control strategy for permanent magnet synchronous generator (PMSG) in wind power system is vector control rather than direct torque control (DTC) or direct power control (DPC). This paper do detail job to analyze the custom PMSG vector control strategy, point out characteristics for each current control scheme, expatiated on restrictions of generator side converter control. Based on improve...
Back to back full-size PWM converter is widely used in direct drive wind power system (DDWPS). It is the most cost-effective converter topology verified in field application. The characteristics of back to back full-size converter of DDWPS based on permanent magnetic synchronous generator (PMSG) are researched on in detail through a precise simulation and an experiment. The control strategy is given...
Electric utility deregulation has made it possible for power producers and suppliers (PPSs) to enter the electricity market in Japan. PPSs are supposed to achieve 30-minute balancing control for stable supply of electrical power, in which energy demand and energy supply should be matched within thirty minutes. Meanwhile, load rejection and instantaneous voltage drop greatly affect turbine shafting,...
This paper presents a novel control strategy for the operation of a direct drive permanent magnet synchronous generator (PMSG) based stand alone variable speed wind turbine. The control strategy for the generator side converter with maximum power extraction is discussed. The stand alone control is featured with output voltage and frequency controller capable of handling variable load. The potential...
A variable-speed wind power generation system, based on direct torque control (DTC) of an interior permanent magnet synchronous generator (IPMSG), is proposed herein. The proposed system can achieve the MPPT control without wind speed in addition to the speed and position sensorless control as well as the current control method. DTC has several advantages such as simple system configuration, easy...
A novel control strategy for the operation of a permanent magnet synchronous generator (PMSG) based stand alone variable speed wind turbine is presented in this paper. The direct drive PMSG is connected to the load through a switch mode rectifier and a vector controlled pulse width modulated (PWM) IGBT-inverter. The generator side switch mode rectifier is controlled to achieve maximum power from the...
A novel maximum power point tracking (MPPT) strategy is presented in the paper. When wind speed varies, the wind turbine could obtain a big torque difference by adopting the novel strategy to achieve the aim of tracking the optimum turbine speed fleetly. The square wave permanent magnet synchronous generator (PMSG) is adopted in this paper for considering the characteristic of the diode rectifier-Boost...
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