Proportional-Resonant Control of Doubly-Fed Induction Generator Wind Turbines for Low-Voltage Ride-Through Enhancement

Yan, Yan; Wang, Meng; Song, Zhanfeng; Xia, Changliang

doi:10.3390/en5114758

Cited by 23 publications

(9 citation statements)

References 32 publications

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“…A PR controller can be applied in both the abc and αβ reference frames [44][45][46]. The steady-state error of electrical quantities can be easily eliminated by this controller since it has high gain near the resonant frequency [39].…”

Section: Proportional-resonant Controllermentioning

confidence: 99%

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

et al. 2017

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Distributed generation (DG) is one of the key components of the emerging microgrid concept that enables renewable energy integration in a distribution network. In DG unit operation, inverters play a vital role in interfacing energy sources with the grid utility. An effective interfacing can successfully be accomplished by operating inverters with effective control techniques. This paper reviews and categorises different control methods (voltage and primary) for improving microgrid power quality, stability and power sharing approaches. In addition, the specific characteristics of microgrids are summarised to distinguish from distribution network control. Moreover, various control approaches including inner-loop controls and primary controls are compared according to their relative advantages and disadvantages. Finally, future research trends for microgrid control are discussed pointing out the research opportunities. This review paper will be a good basis for researchers working in microgrids and for industry to implement the ongoing research improvement in real systems.

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Section: Proportional-resonant Controllermentioning

confidence: 99%

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

et al. 2017

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“…Nowadays, the gear-drive doubly-fed induction generator (DFIG) based wind turbine is dominating the market [4]. The DFIG technology has the advantage of using partial scale converters, decreasing the system costs, but it has two main drawbacks: the use of a gearbox, which is a weak point in the structure with high maintenance costs, and due to the direct stator connection to the grid, this technology is greatly affected by grid disturbances [5][6][7][8]. In this context, several papers in the literature address the behavior of WECS during voltage sags and propose strategies to improve the system RTFC.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, several papers in the literature address the behavior of WECS during voltage sags and propose strategies to improve the system RTFC. The issue of the LVRT in DFIG-based technology is a topic extensively discussed in the literature, and several strategies are proposed to improve the system response, as presented in papers [5][6][7][8][9][10]. The RTFC of PMSG-based technology is simpler, since the use of a full scale back-to-back converter decouples the grid and generator sides [4,11].…”

Section: Introductionmentioning

confidence: 99%

Low Voltage Ride-Through Capability Solutions for Permanent Magnet Synchronous Wind Generators

et al. 2016

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Due to the increasing number of wind power plants, several countries have modified their grid codes to include specific requirements for the connection of this technology to the power system. One of the requirements is the ride-through fault capability (RTFC), i.e., the system capability to sustain operation during voltage sags. In this sense, the present paper intends to investigate the behavior of a full-converter wind generator with a permanent magnet synchronous machine during symmetrical and asymmetrical voltage sags. Two solutions to improve the low voltage ride-through capability (LVRT) of this technology are analyzed: discharging resistors (brake chopper) and resonant controllers (RCs). The design and limitations of these solutions and the others proposed in the literature are discussed. Experimental results in a 34 kW test bench, which represents a scaled prototype of a real 2 MW wind conversion system, are presented.

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“…Electric machines have a prominent role in modern energy conversion systems, such as wind power generators and electric vehicles (EVs) [1][2][3][4][5]. Due to the high torque density and high efficiency, permanent magnet machines have been widely used.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Design and Analysis of a Novel Fault-Tolerant Flux-Modulated Memory Machine

Wang

Niu

2015

Energies

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Abstract:Electric machines play an important role in modern energy conversion systems. This paper presents a novel brushless fault-tolerant flux-modulated memory (FTFM) machine, which incorporates the merits of a flux-modulated permanent magnet machine and multi-phase memory machine and is very suitable for applications that require wide speed ranges of constant-power operation. Due to the magnetic modulation effect, the FTFM machine can produce a large torque at relatively low speeds. Due to the usage of aluminum-nickel-cobalt (AlNiCo) magnets, this machine can readily achieve a flexible air-gap flux controllability with temporary DC current pulses. Consequently, the constant-power region is effectively expanded, and the machine's efficiency during constant-power operation is increased. Due to the multi-phase armature winding design, the FTFM machine enables lower torque ripple, increased fault tolerance ability and a higher possibility of splitting the machine power through a higher number of phases, thus the per-phase converter rating can be reduced. The design methodology and working principle of this kind of machine are discussed. The electromagnetic performances of the proposed machine are analyzed using the time-stepping finite element method (TS-FEM).

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Proportional-Resonant Control of Doubly-Fed Induction Generator Wind Turbines for Low-Voltage Ride-Through Enhancement

Cited by 23 publications

References 32 publications

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

Low Voltage Ride-Through Capability Solutions for Permanent Magnet Synchronous Wind Generators

Electromagnetic Design and Analysis of a Novel Fault-Tolerant Flux-Modulated Memory Machine

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