Rotor Position Phase-Locked Loop for Decoupled  $P\hbox{-}Q$ Control of DFIG for Wind Power Generation

Mwinyiwiwa, Bakari M. M.; Zhang, Yongzheng; Shen, Baike; Ooi, Boon-Teck

doi:10.1109/tec.2009.2025328

Cited by 57 publications

(33 citation statements)

References 8 publications

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“…There are several position sensorless methods proposed in the literature [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The earlier methods are proposed in [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Similar principles are used in [8] to [16]. Rotor position detection systems, based in MRAS or PLL methodologies, are presented in [9][10][11][12][13][14][15][16], some working on the rotor reference frame [10][11][12] and others on the stator reference frame [13,14]. These methods are based on the phase comparison of an estimated quantity and its correspondent measured values.…”

Section: Introductionmentioning

confidence: 99%

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A New Sensorless MRAS Based on Active Power Calculations for Rotor Position Estimation of a DFIG

Marques

Sousa

2011

Advances in Power Electronics

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A sensorless method for the estimation of the rotor position of the wound-rotor induction machine is described in this paper. The method is based on the MRAS methodology and consists in the comparison of two models for the evaluation of the active power transferred across the air gap: the reference model and the adaptive model. The reference model obtains the power transferred across the air gap using directly available and measured stator variables. The adaptive model obtains the same quantity in function of electromotive forces and rotor currents that are measurable on the rotor position, which is under estimation. The method does not need any information about the stator or rotor flux and can be implemented in the rotor or in the stator reference frames with a hysteresis or with a PI controller. The stability analysis gives an unstable region on the rotor current dq plane. Simulation and experimental results show that the method is appropriate for the vector control of the doubly fed induction machine under the stability region.

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“…There are several position sensorless methods proposed in the literature [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The earlier methods are proposed in [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Sensorless MRAS Based on Active Power Calculations for Rotor Position Estimation of a DFIG

Marques

Sousa

2011

Advances in Power Electronics

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“…For the stator voltage which is defined by Equation (20), the dq-transformation using the angle θ s is given by Equation (21). Equation (22) is fed to a PI controller followed by an integrator which force this equation to zero by generating the synchronous angle which is given by Equation (23). The orientation angle is normally set to zero to obtain the grid voltage angle except when otherwise declared.…”

Section: Methodsmentioning

confidence: 99%

“…The decoupled P-Q (active and reactive powers) control was developed from the vector control method by introducing an outer control loop which generates the rotor current references from the stator active and reactive powers [23][24][25]. Consequently, the decoupled P-Q requires less number of DFIG's parameters than the vector control, while having the same advantages.…”

Section: Introductionmentioning

confidence: 99%

A New Robust Decoupled Control of the Stator Active and Reactive Currents for Grid-Connected Doubly-Fed Induction Generators

et al. 2016

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This paper addresses the grid-connected variable speed doubly-fed induction generator, and proposes a new decoupled control to replace the conventional decoupled active and reactive powers (P-Q) control. The proposed decoupled control is based on decoupling the stator active and reactive currents, in contrast with the conventional decoupled P-Q control, which is based on decoupling the stator active and reactive powers by forcing the stator d-or q-voltage to zero. The proposed decoupled control has all the advantages of the conventional decoupled P-Q control such as constant switching frequency and robustness against slip angle inaccuracy, and it has some additional advantages: The proposed control requires less machine parameters; for the controller design, it requires the stator-to-rotor turns ratio only; for the online calculation, it does not requires any machine parameter. The proposed decoupled control is more flexible and robust since the control is independent of the grid voltage orientation. It is robust against variation in the grid voltage amplitude. Several experiments are carried out using a 1.1 kW doubly-fed induction generator (DFIG), and the results support the proposed decoupled control and demonstrate some of its advantages.

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“…3, are two-fold: (i) The switching ripple-free line voltage waveforms of fixed magnitude and frequency (ω p ); (ii) Negligible λ p and θ p estimation errors due to the R p temperature variations from the measured 'cold' DC value used for calculations at full supply voltage. The obtained λ αβ estimates are processed through a conventional PhaseLocked-Loop (PLL) filter [41] to suppress the usual effects of transducer DC offset and noise in measurements. The 'cleaned' θ p is employed to find the d p − q p currents, i pd and i pq , by applying the well-known frame transformations as shown in Fig.…”

Section: Sensorless Control Proceduresmentioning

confidence: 99%

A New Sensorless Speed Control Scheme for Doubly Fed Reluctance Generators

Ademi

Jovanović

Chaal

et al. 2016

IEEE Trans. Energy Convers.

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Abstract-The paper presents the development and experimental validation of a novel angular velocity observer-based fieldoriented control algorithm for a promising low-cost brushless doubly-fed reluctance generator (BDFRG) in wind power applications. The BDFRG has been receiving increasing attention because of the use of partially-rated power electronics, the high reliability of brushless design, and competitive performance to its popular slip-ring counterpart, the doubly-fed induction generator (DFIG). The controller viability has been demonstrated on a BDFRG laboratory test facility for emulation of variable speed and loading conditions of wind turbines or pump drives.

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Rotor Position Phase-Locked Loop for Decoupled $P\hbox{-}Q$ Control of DFIG for Wind Power Generation

Cited by 57 publications

References 8 publications

A New Sensorless MRAS Based on Active Power Calculations for Rotor Position Estimation of a DFIG

A New Sensorless MRAS Based on Active Power Calculations for Rotor Position Estimation of a DFIG

A New Robust Decoupled Control of the Stator Active and Reactive Currents for Grid-Connected Doubly-Fed Induction Generators

A New Sensorless Speed Control Scheme for Doubly Fed Reluctance Generators

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