Influence of network voltage level, converter topology and integration of energy storage on the power losses of STATCOM devices

Virtanen, Antti; Jokipii, J.; Rekola, Jenni; Tuusa, H.

doi:10.1109/apec.2013.6520513

Cited by 9 publications

(3 citation statements)

References 11 publications

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“…It takes into account the active power exchanged between the ac grid and the batteries. It is expressed as (4) The dynamics of the arm's currents are given by (5) …”

Section: A Circuit Dynamicsmentioning

confidence: 99%

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Modular multilevel converters with integrated batteries energy storage

Lachichi

2014

2014 International Conference on Renewable Energy Research and Application (ICRERA)

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This paper presents the analysis of the modular multilevel converter with integrated batteries energy storage and highlights the influence of the power injected to the grid from the batteries or vice versa on the capacitors' voltage balancing. The control objective of the converter is to maintain a balance between the arms. By redefining the circulating current in order to compensate for reactive power and rebalance the ac grid voltage asymmetries, it is shown through simulation results that the current injected by the batteries does not introduce any unbalance to the converter.

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“…It takes into account the active power exchanged between the ac grid and the batteries. It is expressed as (4) The dynamics of the arm's currents are given by (5) …”

Section: A Circuit Dynamicsmentioning

confidence: 99%

“…In [3], the authors highlight the advantages and disadvantages of connecting batteries energy storage either in the cascaded converter or the diode-clamped converter, while in [4], a sensitive analysis is carried out in order to highlight influence of the choice of the topology and the network voltage level on the losses.…”

Section: Introductionmentioning

confidence: 99%

Modular multilevel converters with integrated batteries energy storage

Lachichi

2014

2014 International Conference on Renewable Energy Research and Application (ICRERA)

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“…SKM 75GB063D IGBT-modules having voltage rating of 600 V and SKKD 40F10 diode modules by Semikron are used in this study. The simulation models of the converter losses take into account the instantaneous current though IGBTs and diodes as presented in [15][16]. The converter power loss models are verified by measurements [17].…”

Section: Efficiency Of Lvdc Distribution Network Supplied By Two Convmentioning

confidence: 99%

Effect of network configuration and load profile on efficiency of LVDC distribution network

Rekola

Jokipii

Suntio

2014

2014 16th European Conference on Power Electronics and Applications

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The low voltage direct current (LVDC) distribution network is a promising solution to be considered in future smart grids. For facilitating the design of cost effective LVDC distribution networks, the total losses of the network with different configurations are evaluated and compared. The possibility to connect the customer loads asymmetrically, when the bipolar DC network is used and the fact that the customer has single-phase loads, which lead to phase-asymmetrical loading of a three-phase converter, are taken into account. According to the results presented in this paper, the highest efficiency is achieved when the ungrounded LVDC distribution network is supplied by two series connected line converters. When the length of the bipolar network is 600 m at maximum, three-phase load converters should be connected to 750 V DC with a 400V/400V isolation transformer. Instead, while the length of the DC network is over 600 m, the maximum efficiency is achieved when the unipolar network configuration is used by connecting the load converters to 1500 V DC with a 800V/400V isolation transformer.

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