Virtual Capacitor Concept for Computationally Efficient and Flexible Real-Time MMC Model

Milovanović, Stefan; Luo, Min; Dujić, Dražen

doi:10.1109/access.2021.3121351

Cited by 3 publications

(2 citation statements)

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“…The schematics of the HIL platform that is used in this paper is shown in Fig. 2 and is based on the interconnection of 10 RT Boxes to model the M3C, but shares the same control hardware as the setup used for IMMC described in [13] and [21]. One RT Box, hosting the input ac grid as well as the ac output application (ac machine or ac grid), will be referred to as Application RT Box.…”

Section: Description Of the Real-time Hil Systemmentioning

confidence: 99%

See 1 more Smart Citation

Distributed Real-Time Model of the M3C for HIL Systems Using Small-Scale Simulators

Bontemps¹,

Milovanović²,

Dujić³

2021

IEEE Open J. Power Electron.

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Hardware-in-the-loop systems are an essential tool to verify controllers and deployed control algorithms in a risk-free environment. The inaccessibility of the converters used in applications such as pumped hydro storage power plants due to their high ratings, require the development of a hardware-in-the-loop platform to perform the validation of the deployed control structures and algorithms. This paper presents the modeling and splitting of the model of the matrix modular multilevel converter to allow the usage of small-scale simulators, such as the RT Boxes, to deal with the complex system exceeding capabilities of a single unit. To achieve an acceptable simulation step-size, this paper demonstrates the splitting of the model into multiple independent instances using the concept of virtual capacitance implementation. The verification of the proposed concept is done on a hardware-in-the-loop system compromising ten RT Boxes, where the physical model of the matrix modular multilevel converter is deployed, and control algorithms are implemented on the ABB PEC800 industrial controllers.

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Section: Description Of the Real-time Hil Systemmentioning

confidence: 99%

“…Where L Σx = L x + L br 3 for the equivalent circuit seen from the input ac side, and L Σy = L y + L br 3 for the equivalent circuit seen from the output ac side. Equations ( 16) to (21) are equivalent as the equations from the initial model seen in Fig. 6, thus this initial model can be interchanged with the one from Fig.…”

Section: Splitting Of the M3c Modelmentioning

confidence: 99%