Global optimization of high-power modular multilevel active-front-end converter using analytical model

Zabihinejad, Amin; Viarouge, P.

doi:10.1007/s00202-017-0523-5

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…( 17) also define PCC power factor. By accessing the impacts of unbalance voltage, current distortion, harmonics and voltage equations in (14) to (17) within the power factor as analysed in [9,27] hence, Eqs. ( 14) to (16) are identified as a load conformity factor.…”

Section: Conventional Electrical Circuit Analysismentioning

confidence: 99%

“…The conventional electrical circuit analysis offers advantages such that all the electrical characteristics linked to the load are dissociated by the orthogonal disintegration of the current, generated power and the power factor in (abc) coordinates in Eqs. (1), (6) and (17).…”

Section: Conventional Electrical Circuit Analysismentioning

confidence: 99%

“…The switching device blocking during a disturbance is appropriate to reduce any AC grid involvement in the DC fault current, which is one of the attractive characteristics of the device. Diverse features of the FBMCs have been researched, the basic operational principle, modulation and capacitor voltage balancing are presented in [17][18][19]. The authors in [20] implemented the application of a single reference per phase for sinusoidal pulse width modulation and staircase with the nearest voltage levels while fundamental switching frequency modulation and capacitor voltage balancing for multilevel converter is presented in [21].…”

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confidence: 99%

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Enhancement of Large Renewable Distributed Generation Penetration Levels at the Point of Common Coupling

Stephen¹,

Musasa²,

Davidson³

2022

Energy Engineering

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The occurrence of distortion and over voltage at the Point of Common Coupling (PCC) of Renewable Distributed Generation (RDG) limits its penetration levels to the power system and the RDG integration is expected to play a crucial role in power system transformation. For its penetrations to be sustained without disconnection from the system, there must be a solution to the voltage rise, distortion, unbalanced current and grid reactive power control strategy at PCC. It is an IEEE-1547 requirement that RDG integration to the power system should be regulated at PCC to avoid disconnection from the network due to power quality criteria. RDG integration must meet up with this specification to uphold power quality and avoid damage to the sensitive equipment connected at PCC. In this paper, voltage rise, unbalanced current, reactive power and distortion are being managed at PCC while Distribution Network (DN) accepts more RDG penetration levels without violation of the IEEE and South Africa grid code act. Active Power Filter and Full Bridge Multi-Level Converter (FBMC) are considered to safeguard power quality to the grid, they are modelled in MATLAB/SIMULINK and the results obtained shown that the proposed strategy can successfully regulate voltage rise, distortion, unbalanced current and continuously improve power quality with RDG integration at PCC. The proposed method's key innovation is the strategic generation and absorption of reactive power to curtain an overvoltage, reverse power flow, and distortion at the PCC, allowing more RDG penetration levels to the grid without disconnection while maintaining the standard requirement for power quality at the PCC. The simulation outcomes validate the superiority of the FBMC over the active power filter with respect of reactive power generation/absorption, dynamic response, and damping capability.

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