DSCC-MMC STATCOM Main Circuit Parameters Design Considering Positive and Negative Sequence Compensation

Cupertino, Allan Fagner; Farias, João Victor Matos; Pereira, Heverton A.; Seleme, Seleme Isaac; Teodorescu, Remus

doi:10.1007/s40313-017-0349-4

Cited by 24 publications

(20 citation statements)

References 24 publications

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“…where I n , N, and V dc designate the nominal arm current, number of cells per arm, and average operating voltage of the capacitor, respectively. The stored energy requirements for the MMC topologies is 40 J/kVA, according to [34]. Therefore, the energy storage is 40,000 J and 45.5 J for capacitor and inductor, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…These topologies make it easier to deal with the state of charge (SOC) unbalance of the batteries. They also present low losses, modularity and scalability, among other characteristics [34]. The cascaded H-bridge converter (CHB) and the modular multilevel converter with chopper or bridge cells (CC or BC) are two highly discussed multilevel topologies in power storage applications.…”

Section: Transformerless Topologiesmentioning

confidence: 99%

“…The inclusion of the dc/dc stage is controversial. Many works use the CHB topologies without the dc-dc stage [34,35]. On the other hand, other papers argue that it is better to use this stage to improve the lifetime of the batteries [40].…”

Section: Transformerless Topologiesmentioning

confidence: 99%

See 2 more Smart Citations

Power converters for battery energy storage systems connected to medium voltage systems: a comprehensive review

et al. 2019

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Recent works have highlighted the growth of battery energy storage system (BESS) in the electrical system. In the scenario of high penetration level of renewable energy in the distributed generation, BESS plays a key role in the effort to combine a sustainable power supply with a reliable dispatched load. Several power converter topologies can be employed to connect BESS to the grid. There is no defined and standardized solution, especially for medium voltage applications. This work aims to carry out a literature review on the main converter topologies used in BESS and highlight the main advantages and disadvantages of each one. The topologies used for each conversion stage are presented and their combinations are analyzed. In addition, the different services that BESS can carry out when connected to the distribution system are analyzed in order to demonstrate all the main contributions to the electrical systems. Finally, a case study is performed to compare and analyze the converter topologies for BESS, considering some aspects such as efficiency, power quality and number of components.

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Section: Resultsmentioning

confidence: 99%

Section: Transformerless Topologiesmentioning

confidence: 99%

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Power converters for battery energy storage systems connected to medium voltage systems: a comprehensive review

et al. 2019

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“…The inverter is controlled on the condition that the output power of the new energy is kept constant. Since the current is mainly studied in the event of a fault, new energy can be equivalent to a controlled current source model [20].…”

Section: Analysis Of Negative Sequence Current With New Energy Inmentioning

confidence: 99%

“…Aiming at the problem that new energy integration could increase negative sequence current, it is necessary to compensate the negative sequence current on the generator extremity to protect the generator from being damaged by it [20]. According to the relationship between the allowable value of negative sequence current and the current duration of the generator, the negative sequence current should be compensated below the curve of negative sequence current allowed by the generator.…”

Section: Control Strategy Of Negative Sequence Current and Operatmentioning

confidence: 99%

A New Protection Strategy Based on Negative Sequence Current Coordinated Control on the Generator Extremity

Xie

Wang

et al. 2020

IEEE Access

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When the single-phase reclosin g of the high-voltage circu it, there will be tremendous negative sequence current generation. The connection of inverter-type new energy sources may increase the negative sequence current of the power system. The risks will b e greatly increased if a large negative sequence current invades the generator, and it will cause the general stator damaged and offline. Based on the chain STATC OM compensation, a new strategy of negative sequence current coordinated control protection on the generator extremity is put forward. This strategy can predict the operation time of inverse time negative sequence current protection by monitoring the negative sequence current on the generator extremity. Once it is determined that the negative sequence current has a n effect on the power system, according to the relationship between the STATC OM capacity and the magnitude of negative sequence current, two schemes of full compensation and incomplete compensation are proposed. The negative sequence current output by STATC OM suppresses the magnitude of the negative sequence current invading the generator. It eliminates or prolongs the operation time of the negative sequence current protection and gets more time for power system security and stability control. Finally, the simulation results verify the correctness and feasibility of the proposed strategy.

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Control tuning methodology for modular multilevel converter‐based STATCOM

Sousa,

Cupertino,

Pinto

et al. 2023

Circuit Theory & Apps

Self Cite

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SummaryThe application of modular multilevel converters (MMC) in medium voltage static synchronous compensators (STATCOMs) has been investigated in recent years. A huge challenge for MMC‐STATCOM is to compute the gain of the controllers. Therefore, the contribution of this paper is the proposal of a control tuning methodology for MMC‐STATCOM. For this purpose, the control and tuning strategies are presented. Since MMC‐STATCOM can employ different modulation strategies, two distinct modulation strategies are considered: nearest‐level control, with variable switching frequency; and phase‐shifted carrier pulse‐width modulation, with fixed switching frequency. Moreover, the proposal was validated through simulation and an experimental platform. The results indicate that the power response follows the reference, besides supplying the internal losses of the converter. The 10% ripple tolerance of the submodule voltages is respected in steady state for both modulation strategies. Moreover, the 5% total demand distortion (TDD) limit recommended by the Institute of Electrical and Electronics Engineers (IEEE) standard is attended. These results demonstrate the effectiveness of the controls employed.

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DSCC-MMC STATCOM Main Circuit Parameters Design Considering Positive and Negative Sequence Compensation

Cited by 24 publications

References 24 publications

Power converters for battery energy storage systems connected to medium voltage systems: a comprehensive review

Power converters for battery energy storage systems connected to medium voltage systems: a comprehensive review

A New Protection Strategy Based on Negative Sequence Current Coordinated Control on the Generator Extremity

Control tuning methodology for modular multilevel converter‐based STATCOM

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