A Unified Power Control Method for Standalone and Grid-Connected DFIG-DC System

Wu, Chao; Cheng, Po-Tai; Ye, Yuhua; Blaabjerg, Frede

doi:10.1109/tpel.2020.2996267

Cited by 19 publications

(21 citation statements)

References 13 publications

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“…Then, the response of the DFIG‐WT with a single diode‐single PWM converter topology (Figure 1) is compared with the proposed topology (Figure 2) in the presence of a considerable voltage dip on the DC grid. Additionally, it is assumed that the control approach used for the PWM converter in Figure 1 is based on the suggested method in [32].…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Compared with AC grid, fewer research studies have been accomplished regarding issues of the DFIG-WTs in DC grids and microgrids. In [26][27][28][29][30][31][32] and in the most related papers, a common topology, illustrated in Figure 1, is used for connecting the DFIG to the DC grid. In other words, in Figure 1a single diode bridge rectifier at the stator side and a PWM voltage source converter at the rotor side are employed to connect the DFIG-WT to the DC grid.…”

Section: Introductionmentioning

confidence: 99%

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Direct current grid‐based doubly‐fed induction generator wind turbines: Real‐time control and stability analysis

Akhbari

Rahimi

Khooban

2022

IET Power Electronics

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Commonly, a simple topology consisting of a single diode‐rectifier and pulse‐width‐modulation (PWM) converter is used for the connection of the doubly‐fed induction generator‐based wind turbines (DFIG‐WTs) to the DC grid, in which the rotor‐side converter (RSC) and the stator diode‐rectifier are linked to the common DC bus. But, this topology suffers from less flexibility due to the requirement of matching the stator nominal voltage with the DC grid. Hence, in this paper, a buck converter is added to the DFIG‐WT topology and two methods are proposed to control the power converters, where in the first one, the RSC regulates the active power and stator flux linkage, and in the second one, the RSC regulates the DC bus voltage and stator flux linkage. Then, the small‐signal stability and the performance of the DFIG‐WT system with the mentioned control strategies are compared analytically and through the off‐line simulations. At last, a real‐time hardware‐in‐the‐loop (HIL) emulation‐based OPAL‐RT is carried out to investigate the performance of the proposed control methods from a practical perspective.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct current grid‐based doubly‐fed induction generator wind turbines: Real‐time control and stability analysis

Akhbari

Rahimi

Khooban

2022

IET Power Electronics

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“…Based on equations (7,8), the control mission of active and reactive power channels fed into the grid is very convenient. The active power is in proportion with the d component of the rotor current ( 2 ird), the reactive power is in proportion with the q component of the rotor current ( 2 irq).…”

Section: Figure 5 the System Diagram Of Dfig Using Rotor Sync Signal Methodsmentioning

confidence: 99%

“…Thus, the author proposed the generator based on a doubly-fed induction machine because this generator can keep the stable frequency of output voltage while changing the rotor speed [6,7].…”

Section: Figure 1 the Ship's Generation System With A Shaft Generatormentioning

confidence: 99%

The Power-Sharing System of DFIG-Based Shaft Generator Connected to a Grid of the Ship

Nguyen

Ngo

2021

IEEE Access

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This article proposes a control system for a ship power station using a doubly-fed-induction generator (DFIG). Firstly, the author analyzes the characteristics of the power generation system using DFIG based on the rotor sync signal technique and then proposes a control system for adjusting the active and reactive power of the generator supplied to the grid. The advantage of the rotor sync technique is that the two control channels of active and reactive power are independent. It is favorable for the author proposes the Fuzzy-PID controller for each control channel. The result is that active and reactive power always follow the desired values in a fast response time. Thus, the author applies this proposed system for automatic load division in parallel power grids on ships. The entire generator system has well ensured the load distribution between the shaft-generator and the grid in the case of changes in load consumption and rotor speed of the generator.

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“…The BDFG-based dc power generation system is originated from the corresponding DFIG system. In the last ten years, the research work on the DFIG-based dc power generation has been carried out, including coordinated control [107], [108], sensorless control [109], efficiency optimization control [110], direct torque control [111], torque ripple rejection [112], stator frequency regulation [113], [114], and power control [115], [116].…”

Section: DC Power Generationmentioning

confidence: 99%

Recent Advances of Control Technologies for Brushless Doubly-Fed Generators

Liu

Hussien

Shao³

et al. 2021

IEEE Access

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The brushless doubly-fed generator (BDFG) is a kind of dual-electrical-port field-modulated electrical machine containing two sets of stator windings with different pole pairs. The stator power winding undertakes most of the power inflow and outflow, and the stator control winding connected to the power converter can be utilized to regulate the machine operation status. Consequently, the rotor no longer needs to be supplied by the power converter, so that the brushes and slip rings can be removed. The BDFG can be used for grid-connected power generation as well as standalone power generation. This paper reviews recent advances of control technologies for BDFGs under different operation conditions, e.g., gridconnected ac power generation with normal and faulty grids, standalone ac power generation with normal and special loads, and dc power generation. The progresses of sensorless control technologies for BDFGbased power generation systems are also discussed. The classification and comparison are carried out to discover the similarities and differences between theses control technologies. This paper is in the hope of inspiring new, ground breakings and progresses for high-performance BDFG power generator applications.

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A Unified Power Control Method for Standalone and Grid-Connected DFIG-DC System

Cited by 19 publications

References 13 publications

Direct current grid‐based doubly‐fed induction generator wind turbines: Real‐time control and stability analysis

Direct current grid‐based doubly‐fed induction generator wind turbines: Real‐time control and stability analysis

The Power-Sharing System of DFIG-Based Shaft Generator Connected to a Grid of the Ship

Recent Advances of Control Technologies for Brushless Doubly-Fed Generators

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