Voltage Modulated DPC Strategy of DFIG Using Extended Power Theory under Unbalanced Grid Voltage Conditions

Cheng, Po-Tai; Wu, Chao; Ning, Fuwei; He, Jinwei

doi:10.3390/en13226077

Cited by 9 publications

(6 citation statements)

References 23 publications

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“…In [21] it is presented a decoupled DARPC technique of the ASG connected to an unbalanced power grid, executed in an orthogonal stationary reference frame related to the stator side. In [22], the voltage modulated DARPC method (VM-DARPC) was proposed to control the ASG-based wind turbines. To obtain better system performance, an integral SMC technique-based DARPC method is proposed for three-level neutral-point-clamped (3L-NPC) converters [23].…”

Section: Introductionmentioning

confidence: 99%

“…In Table 2, we present a comparative summary of the two types of DARPC techniques used in this work. Figures [21][22][23], illustrate the zooms on the stator active power, electromagnetic torque and current of the GADA. From these figures, it can be seen that the undulations at these curves are always minimized for the TSC-DARPC with NMSVM technique compared to DARPC with PI controllers.…”

mentioning

confidence: 99%

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Terminal Synergetic Control for Direct Active and Reactive Powers in Asynchronous Generator-Based Dual-Rotor Wind Power Systems

Benbouhenni

Bizon

2021

Electronics

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A terminal synergetic control (TSC) is designed in this work for a rotor side converter (RSC) of asynchronous generator (ASG)-based dual-rotor wind power (DRWP) systems. The design is based on a novel sliding manifold and aims at improving the ASG performance while minimizing active and reactive power undulations. The method performance and its effectiveness were studied under harmonic distortion (THD) of current, parameter variations and power undulations. Simulation results, carried out using Matlab software, confirmed the system’s robustness against parameter variations and its effectiveness in power undulations. The performance of the designed technique was further compared to that of integral-proportional (PI) controllers in terms of parameter variations, power undulations and THD value of current. While both controllers were able to reduce the effects of power undulations and protect the rotor circuit against over-currents, the proposed TSC was shown to be more effective than the classical PI controller in tracking power and minimizing the undulations effect.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Terminal Synergetic Control for Direct Active and Reactive Powers in Asynchronous Generator-Based Dual-Rotor Wind Power Systems

Benbouhenni

Bizon

2021

Electronics

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“…where vp and vq are new variables used to simplify determining the input voltages vfα and vfβ in the αβ0-frame from the dq0-frame without using the Park transformation [16]. Substituting (13) into (14), the new variables vp , vq and vO become:…”

Section: Proposed Combined Voc-dpc Methods Based On Bsc Techniquementioning

confidence: 99%

“…To remedy the aforementioned problems with high control performance and lower computational burden under voltage distortion and unbalanced conditions, several current control methods in the dq-frame without synchronization method and Park transformation have been proposed in recent literature. These methods include combined VOC and DPC (VOC-DPC) method in dq-frame based on instantaneous power method concepts [15], [16] and nonlinear observed grid-phase based VOC method [17].…”

Section: Introductionmentioning

confidence: 99%

Combined voltage oriented control and direct power control based on backstepping control for four-leg PWM rectifier under unbalanced conditions

Chebabhi¹,

Barkat²,

Kessal³

2022

Eng. rev. (Online)

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The present paper proposes a combined voltage-oriented control and direct power control (VOC-DPC) method associated with the backstepping control technique for a three-phase four-wire grid-connected four-leg rectifier in the synchronous rotating frame without using phase locked loop (PLL) and Parks transformation under balanced and unbalanced load and grid conditions. This control method is proposed in order to remove the drawbacks of the conventional VOC based on the PLL technique .The proposed control method is able to enhance the control performance and dynamic responses of the system when considering slow dynamics and instability issues of the PLL in several cases and can decrease the computational burden due to the absence of PLL and Park transformation. In addition, the performance of the proposed VOC-DPC method is enhanced by using backstepping control (BSC) based on Lyabonov theory for both the input currents and DC-bus voltage loops. As a consequence, constant DC-bus voltage, unit power factor, sinusoidal input currents, and neutral current minimization can be accurately carried out under both DC-bus voltage and load variations. Furthermore, robustness against filter inductance variations can also be achieved. The effectiveness, superiority, and performance of the proposed control method for a four-leg rectifier based on BSC in the dq0-frame are validated by several processor-in-the-loop (PIL) co-simulation tests sing the STM32F407 discovery development board.

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“…Other current control strategies in the dq-frame without a synchronization method have been proposed, which have better control performance and dynamic responses under grid voltage distortion conditions. The VOC strategy based on coordinate transformation for three-phase AC/DC converters [37], the VOC-based DPC for GC-VSIs [23], and the VOC-based Grid Voltage-Modulated (GVM-VOC) for VSIs and DFIG [38,39] are some examples. These control strategies based on both DPC and traditional VOC concepts provide a linearly time-invariant system in the dq0frame based on the instantaneous active and reactive powers theory, while having the same properties and control circuit structure as the traditional VOC when the grid voltage phase angle is correctly detected.…”

Section: Introductionmentioning

confidence: 99%

New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter

Al-Dwa

Chebabhi

Defdaf

et al. 2023

Period. Polytech. Elec. Eng. Comp. Sci.

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The synchronization method’s ability is one of the fundamental guarantees for the stability and accuracy of injected current control for grid-connected converter-based distribution resources. These synchronization methods, such as phase locked loop (PLL), are generally based on Park transformation and grid voltage regulation, which may affect an unstable phenomenon under distortion and unbalanced grid voltage conditions and result in more computational complexity. In this present paper, analogous to the traditional voltage-oriented control strategy (VOC) in the synchronous rotating frame (dq0-frame) based on PLL and Parks transformation, an improved voltage-oriented control strategy (IVOC) without synchronization methods and Parks transformation is proposed for grid-connected four-leg inverters (GC-FLVSI) to achieve accurate current control with high-quality performance in the dq0-frame. This proposed strategy is not only used for controlling the GC-FLVSI but also to provide the module of GC-FLVSI in the dq0-frame based on the instantaneous active and reactive powers theory (DPC). The proposed IVOC strategy has the same properties and identical performance as the traditional VOC when the grid phase angle is correctly detected by any synchronization method, with the advantages of both traditional DPC and VOC at the same time. In order to validate the superiority and excellent dynamic and steady-state performances of the proposed IVOC strategy in comparison with the traditional VOC strategy, some simulation scenarios using MATLAB/Simulink under different operations and grid conditions have been performed and presented.

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Voltage Modulated DPC Strategy of DFIG Using Extended Power Theory under Unbalanced Grid Voltage Conditions

Cited by 9 publications

References 23 publications

Terminal Synergetic Control for Direct Active and Reactive Powers in Asynchronous Generator-Based Dual-Rotor Wind Power Systems

Terminal Synergetic Control for Direct Active and Reactive Powers in Asynchronous Generator-Based Dual-Rotor Wind Power Systems

Combined voltage oriented control and direct power control based on backstepping control for four-leg PWM rectifier under unbalanced conditions

New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter

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