Angle Stability Analysis for Voltage-Controlled Converters

Lin, Hengwei; Jia, Chenxi; Guerrero, Josep M.; Vasquez, Juan C.

doi:10.1109/tie.2017.2682022

Cited by 13 publications

(15 citation statements)

References 32 publications

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“…Based on Equation (3), power to angle transformation in VSM exhibits a second-order dynamic, accompanied by all its pros and cons. Second-order control systems, for example, exhibit oscillatory and overshoot characteristics, leading to transient angle instability of VSM [15,21].…”

Section: Vsmmentioning

confidence: 99%

Fault ride through capability of grid forming wind turbines: A comparison of three control schemes

Arasteh

Zeni

Cutululis

2022

IET Renewable Power Gen

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The popularity of converter‐based generations, such as wind and solar, suggests that future power systems will be dominated by power‐electronic converters, reducing the share of conventional generation, and, inevitably decreasing inertia and short circuit contribution of the system. When this happens in power systems, they become more vulnerable to instabilities. A promising solution for counteracting this vulnerability could be equipping converter‐based generation units with grid forming control schemes. A study of the fault‐ride through capability of wind turbines with different grid forming control schemes is presented in this paper. In this context, Virtual Synchronous Machines, Power Synchronisation Control, and Distributed PLLs based Control are considered. The performance of these control schemes is evaluated and compared during three‐phase symmetrical faults using a case study that consists of a wind turbine connected to an AC grid. The simulated results indicate the strengths and drawbacks of each control scheme during faults.

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Section: Vsmmentioning

confidence: 99%

Fault ride through capability of grid forming wind turbines: A comparison of three control schemes

Arasteh

Zeni

Cutululis

2022

IET Renewable Power Gen

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“…Early investigations of FRT strategies for virtual synchronous machines (VSMs) have been presented in [16], [17].…”

Section: B Overview On Frt Control Strategies For Gfm Convertersmentioning

confidence: 99%

Current Limitation Strategy For Grid-Forming Converters Under Symmetrical And Asymmetrical Grid Faults

Rosso¹,

Engelken²,

Liserre

2020

2020 IEEE Energy Conversion Congress and Exposition (ECCE)

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The potentials of grid-forming (GFM) converters in stabilizing a power system with high penetration of power electronics-based generation have been recently investigated. Due to their intrinsic behaviour of voltage source behind impedance, a crucial aspect of any GFM converter control strategy will be the handling of fault-ride through (FRT) scenarios. This paper proposes a FRT strategy for GFM converters, which respects the converter hardware limitations (i.e. current limitations) even under sever fault conditions, while maintaining GFM behavior before, during, and after the fault. The presented strategy addresses both symmetrical and asymmetrical faults, and is compliant with recently proposed draft grid codes requirements published by the British system operator NGESO. The issues related to FRT of GFM converters are first discussed in detail, and a comprehensive overview on the solutions proposed in the literature is reported. Then a proper strategy is presented, and its effectiveness is demonstrated by means of simulations and Power-Hardware-in-the-Loop (PHIL) measurements in a laboratory environment.

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“…The frequency-domain representation of the Vienna rectifier is obtained by applying the Laplace transform of (19). It is shown as: Based on (16)- (20), the full list of the transfer functions is given as follows:…”

Section: Reduced Order Averaged Model Of Vienna Rectifiermentioning

confidence: 99%

“…Since the three-phase Vienna rectifier is inherently a MIMO system, the GNC is usually very complicated because of the extreme complexity of the expressions of Y ldq (s) and Z sdq (s). Providing that the three-phase Vienna rectifier is fully decoupled by unity-power factor control, as compared with Y Lqq (s) or Y Ldd (s), the value of the cross-coupled input admittances Y Ldq (s) and Y Ldq (s) can be ignored [20,21]. By neglecting the cross-coupling between the input and output variables of the rectifier, the three-phase Vienna rectifier can be divided into two independent DC-DC channels.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the assumption above, the three-phase Vienna rectifier can be independent of the d-d and q-q channel. As presented in [9,13,[20][21][22], since the phase of Z sqq (s)Y lqq (s) was always leading the phase of Z sdd (s)Y Ldd (s) by 180°, then the stability of the converter and filter system could be studied by analyzing Z sdd (s)Y ldd (s) alone. This validated the use of the RO model of the three-phase boost rectifier, which modeled the converter as an equivalent dc-dc converter.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stability analysis of high power factor Vienna rectifier based on reduced order model in d-q domain

Dang

Tong

Song

et al. 2018

J. Mod. Power Syst. Clean Energy

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For a DC distributed power system, system stability can be predicted by dividing it into source and load subsystems, and then applying the Nyquist criterion to the impedance interaction between the source and load model. However, the generalized Nyquist criterion is extremely complicated and cannot directly reveal effective control strategies to reduce interaction problems of cascade threephase AC systems. Specifically, as a current force rectifier, this characteristic makes it difficult to judge the stability of a cascade three-phase Vienna AC system. To deal with the aforementioned problems, a simplified small signal stability criterion is presented for an AC distributed power system. Based on the criterion, the small signal model and impedance based on the reduced order model in the dq domain are studied theoretically. For the instability issue, an impedance regulator design method is presented. The correctness of the simplified stability criterion and the effectiveness of the proposed impedance regulator method are validated by extensive simulation and experiment.

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Angle Stability Analysis for Voltage-Controlled Converters

Cited by 13 publications

References 32 publications

Fault ride through capability of grid forming wind turbines: A comparison of three control schemes

Fault ride through capability of grid forming wind turbines: A comparison of three control schemes

Current Limitation Strategy For Grid-Forming Converters Under Symmetrical And Asymmetrical Grid Faults

Stability analysis of high power factor Vienna rectifier based on reduced order model in d-q domain

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