Optimal control of doubly-fed full-controlled induction wind generator with high efficiency

Hofmann, W.; Okafor, Frank

doi:10.1109/iecon.2001.975955

Cited by 16 publications

(4 citation statements)

References 3 publications

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“…The coupled model of DFIG can described through equivalent circuit Figure 2 in park (d, q) reference frame, and we can write the expressions of stator, rotor voltages and flux components It can be written in terms of stator and rotor resistance for the voltage and stator, rotor flux in terms of statoric and rotoric inductances as follows [11][12][13][14].…”

Section: Nonlinear Model Of Dfigmentioning

confidence: 99%

Solve Coupled Axes Problem Without FOANR Based on Substitution Method to Control DFIG Used in Wind Application

Abdesselam¹,

Benoudjafer²,

Boughazi³

2021

JESA

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In order to control output powers generated by doubly fed induction generator (DFIG) used in wind application (WA) many previous studies, mainly based on flux orientation control (FOC) and neglecting resistance to get a simple model of DFIG with decoupled axis. However, this control strategy requires several hypotheses: low and stability of grid voltage in order to orientated the statoric flux, high power of generator to neglecting statoric resistance. As a result that may not be present in realty due to direct connection between stator and the grid In addition to the presence of resistance, whatever the power of the generator, therefore the DFIG represents a complex model and required a nonlinear control without previous approaches closer to reality to respond highly against DFIG nonlinear model, this is the first paper presents a novel strategy to control nonlinear model of DFIG based on substitution method to solving (d,q) coupled axes without flux orientation and neglecting resistance (FOANR) and also does not take into account stability of grid voltage, for produce required reference active and reactive power by controlling the voltage of rotor side converter (RSC), using classical proportional-integral (PI) controller in a non-linear synthesis form by three methods :direct control (D) and indirect open loop (IOL) and indirect with power loop (IWPL),we compared three controls and check their performance towards the real model of DFIG to verify our control and proving its effectiveness without previous approaches. Finally, the simulation results of the studied controls are presented, analyzed and compared.in terms of power reference tracking, robustness to the parametric variation and the ability to respond to sudden wind speed variation.

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Section: Nonlinear Model Of Dfigmentioning

confidence: 99%

Solve Coupled Axes Problem Without FOANR Based on Substitution Method to Control DFIG Used in Wind Application

Abdesselam¹,

Benoudjafer²,

Boughazi³

2021

JESA

View full text Add to dashboard Cite

show abstract

“…In these cases, the grid imposes the frequency and voltage, and the generator control takes care of other tasks like active and reactive power control [3,4] or energy conversion optimization [5,6].…”

Section: Introductionmentioning

confidence: 99%

A control strategy for stand-alone wound rotor induction machine

Forchetti

Solsona

García

et al. 2007

Electric Power Systems Research

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A control strategy to regulate the frequency and voltage of a stand-alone wound rotor induction machine is presented. This strategy allows the machine to work as a generator in stand-alone systems (without grid connection) with variable rotor speed. A stator flux-oriented control is proposed using the rotor voltages as actuation variables. Two cascade control loops are used to regulate the stator flux and the rotor currents. A closed loop observer is designed to estimate the machine flux which is necessary to implement these control loops. The proposed control strategy is validated through simulations with satisfactory results.

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“…The vector control of the rotor current is used to control the active and reactive power independently and stably using a rotating reference frame fixed on the gap flux [5][6][7]. Therefore, precise measurement of the rotor currents is very important in the vector control [8,9].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Compensation of Current Measurement Errors in a Doubly Fed Induction Generator

Son¹,

Im²,

Park³

et al. 2014

Journal of Electrical Engineering and Technology

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-It is necessary to measure the current of rotor for controlling the active and reactive power generated by the stator side of the doubly fed induction generator (DFIG) system. There are offset and scaling errors in the current measurement. The offset and scaling errors cause one and two times current ripples of slip frequency in the synchronous reference frame of vector control, respectively. This paper proposes a compensation method to reduce their ripples. The stator current is variable according to the wind force but the rotor current is almost constant. Therefore input of the rotor current is more useful for a compensation method. The proposed method adopts the synchronous d-axis current of the rotor as the input signal for compensation. The ripples of the measurement errors can be calculated by integrating the synchronous d-axis stator current. The calculated errors are added to the reference current of rotor as input of the current regulator, then the ripples are reduced. Experimental results show the effectiveness of the proposed method.

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Optimal control of doubly-fed full-controlled induction wind generator with high efficiency

Cited by 16 publications

References 3 publications

Solve Coupled Axes Problem Without FOANR Based on Substitution Method to Control DFIG Used in Wind Application

Solve Coupled Axes Problem Without FOANR Based on Substitution Method to Control DFIG Used in Wind Application

A control strategy for stand-alone wound rotor induction machine

Analysis and Compensation of Current Measurement Errors in a Doubly Fed Induction Generator

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