A modular multi-level DC-DC converter for HVDC grids

Vidal-Albalate, Ricardo; Barahona, J.; Soto, D.; Belenguer, Enerique; Peña, R.; Blasco-Gimenez, R.; Parra, Hector Zelaya De La

doi:10.1109/iecon.2016.7793043

Cited by 16 publications

(14 citation statements)

References 15 publications

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“…The controller used for this application is based on the Modular Multi-level DC-DC Converter for HVDC grids presented in [17]. Regarding the control function, it takes as inputs the currents and capacitor voltages and outputs the reference voltages to be applied to each HB cell.…”

Section: The Controllermentioning

confidence: 99%

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Modular Multi-level Converter Hardware-in-the-Loop Simulation on low-cost System-on-Chip devices

Tormo

Vidal-Albalate

Idkhajine

et al. 2018

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

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System-on-Chip (SoC) devices combine powerful general purpose processors, a Field-Programmable Gate Array (FPGA) and other peripherals which make them very convenient for Hardware-in-the-Loop (HIL) simulation. One of the limitations of these devices is that control engineers are not particularly familiarized with FPGA programming, which need extensive expertise in order to code these highly sophisticated algorithms using Hardware Description Languages (HDL). Notwithstanding, there exist High-Level Synthesis (HLS) tools which allow to program these devices using more generic programming languages such as C, C++ and SystemC. This paper evaluates SoC devices to implement a Modular Multi-Level Converter (MMC) model using HLS tools for being implemented in the FPGA fabric in order to perform HIL verification of control algorithms in a single low-cost device. Index Terms-System-on-Chip (SoC), Hardware-in-the-Loop (HIL), Modular Multi-level Converter (MMC), Real-Time Simulation (RTS), High-Level Synthesis (HLS), Zynq

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Section: The Controllermentioning

confidence: 99%

“…2 shows the first loop where the energy of each arm is compensated by the currents i u,l e . The lower arm is controlled to create a DC voltage plus an AC voltage (V DC and V AC respectively) [17]. 7, where V u,l caps ref are the voltages at which the capacitors want to be kept.…”

Section: The Controllermentioning

confidence: 99%

Modular Multi-level Converter Hardware-in-the-Loop Simulation on low-cost System-on-Chip devices

Tormo

Vidal-Albalate

Idkhajine

et al. 2018

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

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show abstract

“…Conversely, by paralleling two or more legs in the T-converter, the inner circulating currents can be made to flow from one leg to the other one. Thus, this configuration eliminates the need for shunt branches or dc link capacitors and increases the power device utilization and dc current handing [16]- [18]. On the other hand, the hybrid-cascaded converter uses the submodule (SM) capacitors as energy buffers to cyclically transmit power from the input to the output [19].…”

Section: Introductionmentioning

confidence: 99%

Sizing and Short-Circuit Capability of a Transformerless HVDC DC–DC Converter

Vidal-Albalate

Soto

Belenguer

et al. 2020

IEEE Trans. Power Delivery

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This work aims at optimizing the converter design of the double-T MMC DC-DC converter in terms of transmitted power per submodule and also in terms of transmitted power per silicon area, while, at the same time, providing the capability to block dc faults. Firstly, the converter operation is described and the optimal values of the inner ac and dc voltages that minimize device power rating are derived. Next, the submodule topology is analyzed and a thorough study on the converter capability for blocking fault currents is carried out, showing that the converter is able to isolate dc faults both at the input and at the output of the converter. Finally, the previous analytical study is verified by means of detailed PSCAD simulations.

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“…The so-called triangular MMC, a non-isolated DC-DC converter utilizing MMC submodules, is presented in [15]. Yet another direct DC-DC converter is discussed in [16] and [17], with double wye or T connected branches enabling conversion without the intermediate stage. Figure 1 presents the overview of selected MMC topologies cited in the introduction.…”

Section: Introductionmentioning

confidence: 99%

Energy balancing in modular multilevel converter systems

Błaszczyk

Koska

Klimczak

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The modular multilevel converter (MMC) is a well-known solution for medium and high voltage high power converter systems. This paper deals with energy balancing of MMCs. The analysis includes multi-converter systems. In order to provide clear view, the MMC control system is divided into hierarchical levels. Details of control and balancing methods are discussed for each level separately. Finally, experimental results, based on multi-converter test setup, are presented.

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A modular multi-level DC-DC converter for HVDC grids

Cited by 16 publications

References 15 publications

Modular Multi-level Converter Hardware-in-the-Loop Simulation on low-cost System-on-Chip devices

Modular Multi-level Converter Hardware-in-the-Loop Simulation on low-cost System-on-Chip devices

Sizing and Short-Circuit Capability of a Transformerless HVDC DC–DC Converter

Energy balancing in modular multilevel converter systems

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