Wind energy conversion system based on DFIG with series grid side converter without transformer

Oliveira, Ítalo A. Cavalcanti de; Rocha, Nady; Silva, E.R.C. da; Siqueira, Luanna Maria Silva de; Menezes, Ely Cavalcanti de; Jacobina, Cursino B.

doi:10.1109/ecce.2017.8096593

Cited by 9 publications

(7 citation statements)

References 28 publications

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“…The reduced power rating of SGSC, contrary to the DVR, is the main advantage of this protection scheme. Literature [51] proposed the SGSC connected at Y-point of the DFIG system without an injection transformer, as illustrated in Figure 13. There are some disadvantages to the proposed SGSC methods.…”

Section: Series Compensationmentioning

confidence: 99%

Low voltage and high voltage ride‐through technologies for doubly fed induction generator system: Comprehensive review and future trends

Din

Zhang

Zheng

et al. 2021

IET Renewable Power Gen

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The advantages, such as the mature control method, less volume of the converter and generator, make the doubly fed induction generator system prevalent in the wind power industry. Nevertheless, the doubly fed induction generator is more susceptible to grid faults and disturbances. The instantaneous high voltage fault may occur due to the excessive local reactive power after the doubly fed induction generator system achieving low voltage ride through, and then the wind turbine might be disconnected again. Hence, not only the low voltage ride through but also high voltage ride through capability should be required for the doubly fed induction generator system to meet the grid code requirements. A comprehensive review of the state of the art low voltage ride through and high voltage ride through technologies for the doubly fed induction generator system is presented. Firstly, different types of common low voltage ride through and high voltage ride through techniques are classified according to their features, i.e. auxiliary hardware, linear or nonlinear control strategies etc. The pros and cons of different low voltage ride through and high voltage ride through techniques are given. Furthermore, the latest developments of low voltage ride through and high voltage ride through technologies are introduced. Finally, the future trends of both the low voltage ride through and high voltage ride through technologies are discussed. 1 INTRODUCTION Wind energy has become one of the most extensively disseminated new energy sources owing to the clean and efficient characteristics. The wind power industry has developed rapidly in China since the beginning of the 21st century. The installed capacity of grid-connected wind power will be expected to reach 210 GW by the end of 2020 [1]. Wind energy development and utilisation have started to develop in a decentralised manner, especially at the end of the power grid. Due to the long distance of the transmission line, the impedance of the power grid seen from the wind turbines increases, and the short circuit ratio (SCR) becomes small, which is the main characteristic of the weak grid. As the proportion of grid-connected wind power is increased and scattered into the weak grid, operational characteristics of the power grid, such as weak inertia, low SCR, This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Series Compensationmentioning

confidence: 99%

Low voltage and high voltage ride‐through technologies for doubly fed induction generator system: Comprehensive review and future trends

Din

Zhang

Zheng

et al. 2021

IET Renewable Power Gen

View full text Add to dashboard Cite

show abstract

“…In this configuration there is a circulating loop between SGSC and GSC, in which the following equations are derived [46], [47]:…”

Section: A Sgsc and Gsc Modelsmentioning

confidence: 99%

“…In this section, the PWM strategies of the GSC and SGSC are presented. The PWM strategy of the RSC is presented in [46], [47].…”

Section: Pwm Strategiesmentioning

confidence: 99%

“…The proposed system in this work was previously analyzed in [46] for a static voltage sag condition and in [47] for series active filter applications. In [46] and [47], the experimental results were obtained without DFIG and only validated the GSC and SGSC controls. In this work, simulation results for a dynamic voltage sag condition (i.e., with inception and clearance of the voltage sag) with harmonic distortions and imbalances are presented and analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…The work also presents more complete experimental results for a grid voltage sag, demonstrating the compensation capacity of the proposed system and validating the controls employed in all three converters. In addition, the control strategy proposed for SGSC in this work is able to deal with voltage imbalances and harmonic distortions simultaneously, unlike the controls proposed in [46] and [47]. The present work also brings a detailed controller design to obtain the parameters of the controllers employed in the system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wind Energy Conversion System Based on DFIG with Three-Phase Series Grid Side Converter and Single DC-Link

Oliveira¹,

Jacobina²,

Rocha³

2021

Eletrônica de Potência

Self Cite

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In this paper, a wind energy conversion system based on doubly-fed induction generator with an additional series grid side converter without transformer is proposed. Stator voltages may be compensated by series grid side converter under distorted and unbalanced grid voltage sags, thus avoiding over-current in the rotor, overvoltage in the dc-link, double-frequency oscillations in the electromagnetic torque, and rotor over-speed. Moreover, the control strategy of the proposed system allows reactive power to be injected during voltage sags. Simulation and experimental results are presented to evaluate the proposed system.

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Realization of fault ride through for doubly fed induction generator system with cascade converter

Din

Zhang

Zheng

et al. 2021

Int Trans Electr Energ Syst

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Summary The doubly fed induction generator (DFIG) system is prevalent in the wind power industry due to cost‐effective variable speed operation and part size power converter. The DFIG system dynamic performance might be degraded by oscillations of the electromagnetic torque and instantaneous stator power under grid faults. This paper proposes an improved method to augment the dynamic performance of the DFIG system under the aforesaid scenarios, where an additional cascade converter (CC) is serially connected at Y‐point of DFIG stator windings. The DFIG performance under low‐voltage ride through (LVRT) and high‐voltage ride through (HVRT) is improved with the proposed control topology. Additionally, with auxiliary control provision, the proposed method can improve the stability of the DFIG system. The theoretical analysis and Matlab/Simulink simulations validate the effectiveness of the proposed method.

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Wind energy conversion system based on DFIG with series grid side converter without transformer

Cited by 9 publications

References 28 publications

Low voltage and high voltage ride‐through technologies for doubly fed induction generator system: Comprehensive review and future trends

Low voltage and high voltage ride‐through technologies for doubly fed induction generator system: Comprehensive review and future trends

Wind Energy Conversion System Based on DFIG with Three-Phase Series Grid Side Converter and Single DC-Link

Realization of fault ride through for doubly fed induction generator system with cascade converter

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