Direct Torque Control Scheme for DC Voltage Regulation of the Standalone DFIG-DC System

Gundavarapu, Akhila; Misra, Himanshu; Jain, Amit

doi:10.1109/tie.2016.2644623

Cited by 36 publications

(30 citation statements)

References 25 publications

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“…The primary objectives of dc power generation system are to keep dcbus voltage constant under stand-alone condition or to control stable power flow under grid-connected condition. In recent years, the regulation of DFIG-DC system is considered in [10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Improved super‐twisting sliding mode control of a stand‐alone DFIG‐DC system with harmonic current suppression

Guo

Wang

Peng

et al. 2020

IET Power Electronics

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This study presents an improved super-twisting sliding mode (SSM) approach to a stand-alone doubly fed induction generator (DFIG) for direct current (DC) generation system. By taking the uncertainties into consideration, an improved SSM regulator based on an extended state observer (ESO) is proposed to enhance the robustness of DC-voltage regulation. Moreover, a novel sinusoidal rotor current calculation method is proposed to generate sinusoidal reference of rotor current. A resonant-based ESO (R-ESO) SSM approach is proposed to regulate rotor current. By applying the R-ESO to estimate the model-related part of DFIG, the tracking performance with respect to a sinusoidal reference is improved. Then, the suppression ability to fifth and seventh harmonic currents are enhanced. Finally, both simulations and experiments on a 6-kW DFIG-DC system are provided to show the effectiveness of DC-voltage regulation and harmonic current suppression of the proposed approach. Nomenclature i, u, φ current, voltage and flux R, L, T resistance, inductance, torque ω sl , ω s slip, and synchronous angular frequency C DC-bus capacitance V dc , i dc DC voltage and current i l DC-load current Superscript

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Section: Introductionmentioning

confidence: 99%

Improved super‐twisting sliding mode control of a stand‐alone DFIG‐DC system with harmonic current suppression

Guo

Wang

Peng

et al. 2020

IET Power Electronics

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show abstract

“…In this technique, current components are controlled by transforming three phase abc reference frame into dq reference frame using Park transformation. The other alternative control techniques are direct torque control (DTC) and direct power control (DPC) schemes [11,12]. These techniques directly control the machine flux and torque by selecting appropriate voltage vectors [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

State‐space modelling of an interconnected system of renewable energy sources and grid for rural electrification

Bhamu

Bhatti

2019

IET Energy Systems Integration

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This study deals with the development of a state-space model for an interconnected system of renewable energy sources (RES) with grid. The RES technologies considered for power generation in the interconnected system are doubly fed induction generator (DFIG) based wind energy conversion system and biogas genset. A linearised model for DFIG has been developed for the system. For biogas genset, the control of frequency and voltage is taken care by the electronic speed governor and IEEE type-I excitation system, respectively. The interconnected system takes a fixed feed of power supply from the grid and the rest of the consumer load is taken care by the RES. Finally, state feedback controllers have been developed for this interconnected system which maintains the active and reactive power balance between different sources of RES when small signal perturbations are given in load and input wind power. The comparative analysis has also been performed with the conventional PI controllers in order to demonstrate the superiority of proposed feedback controllers for the interconnected power system.

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“…This result in variations in the voltage and frequency values beyond the allowable limits [2], [3]. Hence, this undesirable situation in the islanded mode should be controlled, which requires a proper and suitable control strategy [4]- [6]. The generalized configuration of a DGS as stand-alone operation is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Voltage Control Strategy for Three-Phase Inverter Connected Standalone Wind Energy Conversion Systems

Rajababu¹,

Ram²

2019

IJITEE

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The electric power generation using renewable energy sources like wind, solar and/or fuel cells is the need of the hour. The renewable energy system can be used either in grid connected or in standalone mode of operation. Both of the modes require voltage and frequency control to maintain them within the specified limits as per the standards. This paper gives one such control technique to maintain the voltage and frequency in prescribed limits. This paper discusses various control strategies which includes iterative learning controller, model predictive controller and adaptive voltage controller. Among these, the adaptive voltage controller figure out the superior performance. The performance of the controller is verified and presented using the simulation results for various load conditions

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Direct Torque Control Scheme for DC Voltage Regulation of the Standalone DFIG-DC System

Cited by 36 publications

References 25 publications

Improved super‐twisting sliding mode control of a stand‐alone DFIG‐DC system with harmonic current suppression

Improved super‐twisting sliding mode control of a stand‐alone DFIG‐DC system with harmonic current suppression

State‐space modelling of an interconnected system of renewable energy sources and grid for rural electrification

Voltage Control Strategy for Three-Phase Inverter Connected Standalone Wind Energy Conversion Systems

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