Grid-friendly wind power systems based on the synchronverter technology

Zhong, Qing-Chang; Ma, Zengwei; Ming, Wenlong; Konstantopoulos, George C.

doi:10.1016/j.enconman.2014.10.027

Cited by 104 publications

(70 citation statements)

References 25 publications

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“…As a result, under conditions (27), (29) and (30), there exists a unique equilibrium E e inside the given range…”

Section: ) Theoretical Analysismentioning

confidence: 99%

“…) ≥ 0 (27) in order to obtain a real solution E e . Here, α = B 2 + G 2 , γ = G s + G and η = B s + B with β = γ 2 + η 2 .…”

Section: ) Theoretical Analysismentioning

confidence: 99%

“…One of the important advantages of the synchronverter is that some of the system parameters, such as the inertia, the friction coefficient, the field and mutual inductance, can be suitably chosen in order to improve the dynamic performance. The synchronverter represents a promising technology in various applications, such as HVDC transmission [23], [24], MMC [16], rectifierfed loads [25], STATCOM [26], and wind power systems [27]. Furthermore, the synchronisation unit that has been believed to be indispensable for grid-tied converters has been removed for the first time to form self-synchronised synchronverters [28], which considerably reduces the complexity of the controller and improves the performance.…”

mentioning

confidence: 99%

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Improved Synchronverters with Bounded Frequency and Voltage for Smart Grid Integration

Zhong

Konstantopoulos

Ren

et al. 2018

IEEE Trans. Smart Grid

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121

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Abstract-Synchronverters are grid-friendly inverters that mimic conventional synchronous generators and play an important role in integrating different types of renewable energy sources, electric vehicles, energy storage systems, etc., to the smart grid. In this paper, an improved synchronverter is proposed to make sure that its frequency and voltage always stay within given ranges, while maintaining the function of the original synchronverter. Furthermore, the stability region characterised by the system parameters is analytically obtained, which guarantees that the improved synchronverter is always stable and converges to a unique equilibrium as long as the power exchanged at the terminal is kept within this area. Extensive OPAL-RT real-time simulation results are presented for the improved and the original self-synchronised synchronverters connected to a stiff grid and for the case when two improved synchronverters are connected to the same bus with one operating as a weak grid, to verify the theoretical development.

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“…As a result, under conditions (27), (29) and (30), there exists a unique equilibrium E e inside the given range…”

Section: ) Theoretical Analysismentioning

confidence: 99%

“…) ≥ 0 (27) in order to obtain a real solution E e . Here, α = B 2 + G 2 , γ = G s + G and η = B s + B with β = γ 2 + η 2 .…”

Section: ) Theoretical Analysismentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Improved Synchronverters with Bounded Frequency and Voltage for Smart Grid Integration

Zhong

Konstantopoulos

Ren

et al. 2018

IEEE Trans. Smart Grid

Self Cite

121

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“…To investigate wind turbine dynamic behaviour, it is necessary to model other components of the WECS. Dynamic model of the surface mounted PMSG in dq rotor reference frame is wellstudied in the literature [9].To model SEPIC converter, following equations are used…”

Section: Dynamic Model Of the Pmsg Based Wind Turbinementioning

confidence: 99%

An improved SMC control strategies for PMSG based WECS

Purushotham¹,

Girish²,

Kiran³

2017

Nctet-2k17

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“…The concept of synchronverter is introduced in [15], where the grid-connected VSC is controlled in a manner that resembles traditional synchronous generators, enabling converter the capabilities of load sharing and voltage regulation. Its application to HVDC transmission and wind farms has been reported in [16] and [17] respectively. This paper aims to review current control strategies of gridconnected VSC under unbalanced grid faults considering grid requirements and converter current limit, for the sake of studying the potential impact of future converter-based power systems on the transmission-side protective relays.…”

Section: Introductionmentioning

confidence: 99%

A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults

Jia

Yang

Nielsen

2018

IEEE Trans. Power Delivery

160

115

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Abstract-As an increasing amount of converter-based generation on power electronics is connected to power systems, transmission system operators (TSOs) are revising the grid connection requirements to streamline the connectivity of the devices to maintain security of supply. Converter-based generation can behave significantly different from the traditional alternators under grid faults. In order to evaluate the potential impact of future converter-based power systems on protective relays, it is necessary to consider diverse current control strategies of voltage source converters (VSC) under unbalanced faults as the performance of converters primarily depends on their control objectives. In this paper, current control strategies of VSC under unbalanced faults for short circuit power provision are reviewed in two groups, namely power-characteristic-oriented and voltage-support-oriented control strategy respectively. As the fault current provided by converters should be restricted within secure operation limits considering semiconductor capabilities, converter current limit issue is also discussed.

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Grid-friendly wind power systems based on the synchronverter technology

Cited by 104 publications

References 25 publications

Improved Synchronverters with Bounded Frequency and Voltage for Smart Grid Integration

Improved Synchronverters with Bounded Frequency and Voltage for Smart Grid Integration

An improved SMC control strategies for PMSG based WECS

A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults

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