Maximizing Instantaneous Active Power Capability for PWM Rectifier Under Unbalanced Grid Voltage Dips Considering the Limitation of Phase Current

Jiang, Weidong; Wang, Yongsheng; Wang, Jinping; Wang, Lei; Huang, Hui

doi:10.1109/tie.2016.2577544

Cited by 36 publications

(17 citation statements)

References 23 publications

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“…Based on (11) and 12, and applying trigonometric identities to (20) and (21), the above expressions can be rewritten in terms of a rotating transformation as…”

Section: A Maximization Of the Lowest Phasementioning

confidence: 99%

“…The trend in voltage support control is nonetheless dedicated to mainly inductive grids [16]- [20], while low and medium voltage grids with some inherent resistive behavior have been less discussed in the literature [21]- [24]. This study presents a control scheme that applies for any type of grid impedance, either inductive, resistive or a combination of both.…”

Section: Introductionmentioning

confidence: 99%

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Control Strategy for Distribution Generation Inverters to Maximize the Voltage Support in the Lowest Phase During Voltage Sags

Camacho

Castilla

Miret

et al. 2018

IEEE Trans. Ind. Electron.

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Voltage sags are considered one of the worst perturbations in power systems. Distributed generation power facilities are allowed to disconnect from the grid during grid faults whenever the voltage is below a certain threshold. During these severe contingencies, a cascade disconnection could start, yielding to a blackout. To minimize the risk of a power outage, inverter-based distributedgeneration systems can help to support the grid by appropriately selecting the control objective. Which control strategy performs better when supporting the grid voltage is a complex decision that depends on many variables. This paper presents a control scheme that implements a smart and simple strategy to support the fault: the maximum voltage support for the lowest phase voltage. Therefore, the faulted phase that is more affected by the sag can be better supported since this phase voltage increases as much as possible, reducing the risk of under-voltage disconnection. The proposed controller has the following features: a) maximizes the voltage in the lowest phase, b) injects the maximum rated current of the inverter, and c) balances the active and reactive power references to deal with resistive and inductive grids. The control proposal is validated by means of experimental results in a laboratory prototype.

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“…Based on (11) and 12, and applying trigonometric identities to (20) and (21), the above expressions can be rewritten in terms of a rotating transformation as…”

Section: A Maximization Of the Lowest Phasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control Strategy for Distribution Generation Inverters to Maximize the Voltage Support in the Lowest Phase During Voltage Sags

Camacho

Castilla

Miret

et al. 2018

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

show abstract

“…For future work, it is left to investigate which of the possible power production paradigms are apt for specific grid conditions and to determine how the inverters' producing capabilities can most effectively be utilised. [1] elementary P P and Q no no no low [2] no P neither yes no no low [3] yes P and Q P yes P no low [4] yes P P and Q no no no low [6] yes Q P and Q no no no moderate [7] yes Q P and Q no no no moderate [8] elementary Q neither yes no no low [9] yes Q neither no no no low [11] elementary P and Q neither no no no low [12] yes P and Q neither yes P and Q no moderate [14] yes P and Q P and Q no P and Q no moderate [15] no P and Q neither no Q no moderate [16] yes P and Q P no Q no moderate [17] elementary P and Q P and Q no P and Q yes low [18] elementary P and Q neither no no no low [19] yes…”

Section: Discussionmentioning

confidence: 99%

“…Grid codes, regarding low-voltage ride-through, initially demanded from solar power plants to feed maximal active power up to the current limit value. Consequently, a number of papers have devised solutions that result in the maximisation of active power production only [1][2][3][4]. As the grid codes now demand from all distributed generation sources to produce reactive power during the faults, these solutions can be applied to a narrow range of applications [5].…”

Section: Introductionmentioning

confidence: 99%

Extensive technique for grid‐connected converter power generation maximisation during asymmetrical grid voltages

Todorovic

Isakov

Grabić

2019

IET Renewable Power Generation

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Short-circuit faults and asymmetrical power production and consumption result in the appearance of unbalanced voltages. The change in voltage profiles could result in grid-connected converter's overcurrent protection triggering if power references are kept at the pre-disturbance level. This study provides a framework for current references calculation that can result in virtually any active and reactive power profiles that are within the domain of the converter's physical capabilities. This is accomplished by introducing three references calculation algorithms, which are all based on the same underlying concept. The first algorithm gives the grid operator the option to choose to prioritise the production of either active or reactive power and to curtail the power production only to the extent that converter's current ratings are not surpassed. Simultaneously, the oscillations in one of the powers are managed. The second approach also provides power production prioritisation feature, but here power production is realised through adjustable ratio between positive and negative current components. The third scheme is an enhancement of the previous two schemes and allows for the constant power factor to be produced before and during the disturbances. Distribution network model emulated in the hardware-in-the-loop environment was used for the validation of proposed solutions.

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“…A VSC-PFC rectifier subjected to unbalanced grid voltages leads to undesired operating conditions for the grid, the converter itself and the associated load [10]. In the actual open literature, several control schemes have been presented aiming at the VSC-PFC rectifiers to deal with unbalanced conditions [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. However, most of these proposals are variants of same control schemes based on the traditional dq0 technique.…”

Section: Introductionmentioning

confidence: 99%

New phasorial oriented single‐PI loop control for industrial VSC‐PFC rectifiers operating under unbalanced conditions

Santoyo-Anaya

Salgado-Herrera

Rodriguez-Rodrıguez³

et al. 2020

IET Power Electronics

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Due to several reasons, the three-phase voltages of power grids cannot be balanced. The performance of AC-DC converters using dq0-based controls can be severely affected by the presence of unbalanced input AC voltages. Different to these proposals, this study presents a new easy-to-implement control scheme based on a single PI loop algorithm for VSC-PFC rectifiers using a phasorial approach. This new scheme has various significant advantages: (i) fast counteracting of large unbalanced voltage and current conditions; (ii) power factor = 1 at any unbalanced sag operating conditions; (iii) negligible current harmonic distortion and (iv) low-ripple DC voltage. All these features are concurrently obtained. The proposed single-PI loop VSC-PFC rectifier control strategy is theoretically and experimentally validated. A revision of the main results and characteristics of various proposed techniques that are similar to the one proposed in this study is also carried out, qualitatively indicating the main advantages featured by the proposed control strategy for VSC-PFC rectifiers.

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Maximizing Instantaneous Active Power Capability for PWM Rectifier Under Unbalanced Grid Voltage Dips Considering the Limitation of Phase Current

Cited by 36 publications

References 23 publications

Control Strategy for Distribution Generation Inverters to Maximize the Voltage Support in the Lowest Phase During Voltage Sags

Control Strategy for Distribution Generation Inverters to Maximize the Voltage Support in the Lowest Phase During Voltage Sags

Extensive technique for grid‐connected converter power generation maximisation during asymmetrical grid voltages

New phasorial oriented single‐PI loop control for industrial VSC‐PFC rectifiers operating under unbalanced conditions

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