Modeling and control of DFIG-based variable-speed wind-turbine

A novel geared infinitely variable transmission (IVT) that can generate a continuous output-to-input speed ratio from zero to a certain value is developed and analyzed. The principle of changing the output-to-input speed ratio is to use a crankslider mechanism; the output-to-input speed ratio is controlled by adjusting the crank length. Since the crank-slider mechanism can lead to relatively large variation of the output-to-input speed ratio in one rotation of the crank, the instantaneous input and

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“…The force exerted by the carrier on the planetary shaft is denoted by 9 F , as shown in Fig. 25: Fig.…”

Section: Control Modulementioning

confidence: 99%

Dynamic Analysis of a Novel Geared Infinitely Variable Transmission

Wang

Zhu

2014

Volume 4B: Dynamics, Vibration, and Control

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“…(2) Form in, l2= lm 2 -lslr; uqr*, udr* is the new control quantity after introducing feed forward compensation [14,15].…”

Section: The Model Of Doubly-fed Induction Generatormentioning

confidence: 99%

Effect of Wind Farm Based on Doubly-fed Induction Generator on Transient Out-of-step of Power Grid

Chen¹,

Li²,

Chen³

et al. 2017

dtmse

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Abstract.To research the influence of wind farm based on doubly-fed induction generator on transient out-of-step characteristics of power grid. The single-machine infinite-bus model of wind-thermal-bundled system and a dynamic model of doubly fed wind farm are built by PSD-BPA software. The influence of proportion of wind connected, reactive power compensation, integration position and different fault point on transient out-of-step of power grid as well as the variations of thermal power angle and the action time of splitting device are investigated and compared. The conclusion is as follows: the proportion of wind connected and converters capacity are larger, wind farms have reactive power compensation, the better the transient out-of-step for wind-thermal-bundled sending system is restrained when the integration position of wind farms are in sending system.

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“…The grid-side converter is connected to electric utility through a filter. Its main objective is to maintain the DC link capacitor voltage by exchanging the active power with the grid [3]. This paper aims to model the variable speed operation of the DFIG configuration for given wind speed profiles so as to observe the control response and Maximum Power Point Tracking (MPPT) performance during wind speed changes.…”

Section: Introductionmentioning

confidence: 99%

Modeling and MPPT Control in DFIG-Based Variable-Speed Wind Energy Conversion Systems by Using RTDS

Kim¹,

Lim²,

Jung³

et al. 2011

Journal of International Council on Electrical Engineering

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-The generating systems use Doubly-Fed Induction Generators (DFIGs) to achieve high conversion efficiency and to reduce the installation cost. This paper presents a modeling and Maximum Power Point Tracking (MPPT) control method of DFIG-based variable-speed wind energy conversion system. The generator considered is a wound rotor induction machine whose stator is connected directly to the grid and the rotor is fed through back-to-back Pulse-Width Modulation (PWM) converters. Stator flux-oriented vector control is applied to control the active and reactive current loops independently. The MPPT control method in a Wind Energy Conversion System (WECS) is proposed. The proposed control solution aims at driving the position of the operating point near to optimality. This is a very important aspect to maintain DFIGs efficiently in a variable wind speed. The wind generator is modeled in RSCAD program which is interfaced with the Real Time Digital Simulator (RTDS).

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Modeling and control of DFIG-based variable-speed wind-turbine

Cited by 137 publications

References 3 publications

Dynamic Analysis of a Novel Geared Infinitely Variable Transmission

Dynamic Analysis of a Novel Geared Infinitely Variable Transmission

Effect of Wind Farm Based on Doubly-fed Induction Generator on Transient Out-of-step of Power Grid

Modeling and MPPT Control in DFIG-Based Variable-Speed Wind Energy Conversion Systems by Using RTDS

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