Publication

Virtual Capacitor Concept for Effective Real-Time MMC Simulations

Drazen Dujic, Stefan Milovanovic, Min Luo
2021
Conference Papers

Abstract

In this paper, the real-time simulation model of the modular multilevel converter was split into several independent parts through the use of the virtual capacitor concept. As a result, the number of state-space matrices the real-time solver needs to take into account reduces, which leads to the simulation step size decrease. The proposed concept was verified on a large-scale hardware-in-the-loop system comprising seven RT Boxes, where the model of the physical system is deployed, and ABB PEC800 industrial controller, where control algorithms of the real power hardware are executed.

Official source

https://infoscience.epfl.ch/entities/publication/24e57b9a-c8ee-435d-94b5-9677d9aa4bbd

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Drazen Dujic, Stefan Milovanovic, Min Luo
2021
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/24e57b9a-c8ee-435d-94b5-9677d9aa4bbd

About this result

Related concepts (23)

Matrix (mathematics)

In mathematics, a matrix (plural matrices) is a rectangular array or table of numbers, symbols, or expressions, arranged in rows and columns, which is used to represent a mathematical object or a property of such an object. For example, is a matrix with two rows and three columns. This is often referred to as a "two by three matrix", a " matrix", or a matrix of dimension . Without further specifications, matrices represent linear maps, and allow explicit computations in linear algebra.

Hermitian matrix

In mathematics, a Hermitian matrix (or self-adjoint matrix) is a complex square matrix that is equal to its own conjugate transpose—that is, the element in the i-th row and j-th column is equal to the complex conjugate of the element in the j-th row and i-th column, for all indices i and j: or in matrix form: Hermitian matrices can be understood as the complex extension of real symmetric matrices.

Diagonal matrix

In linear algebra, a diagonal matrix is a matrix in which the entries outside the main diagonal are all zero; the term usually refers to square matrices. Elements of the main diagonal can either be zero or nonzero. An example of a 2×2 diagonal matrix is , while an example of a 3×3 diagonal matrix is. An identity matrix of any size, or any multiple of it (a scalar matrix), is a diagonal matrix. A diagonal matrix is sometimes called a scaling matrix, since matrix multiplication with it results in changing scale (size).

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