Design of a Flexible Control Platform for Soft-Switching Multilevel Inverters

Köllensperger, P.; Lenke, Robert U.; Schröder, S.; Doncker, Rik W. De

doi:10.1109/tpel.2007.904216

Cited by 27 publications

(6 citation statements)

References 16 publications

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“…The use of pulse width modulation (PWM) can provide an additional degree of freedom, which can be exploited to minimise the circulating reactive power in the ac link between VSC 1 and VSC 2 . However, with fundamental frequency range stated, the use of high‐frequency PWM must be precluded, because the increase in switching losses is expected to outweigh the gain that will be achieved by increased control flexibility [65, 76, 84, 85]. To avoid this shortcoming of the high frequency PWM, low‐frequency modulation schemes such as selective harmonic elimination (SHE) with one notch per quarter cycle can be used to achieve the necessary control flexibility, specifically ac voltage and reactive power control in the ac link between VSC 1 and VSC 2 , especially during a dc fault.…”

Section: Review Of Established and Emerging Dc–dc Converter Topologiesmentioning

confidence: 99%

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Adam

Gowaid

Finney

et al. 2016

IET Power Electronics

159

105

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This paper presents a comprehensive review of high-power dc-dc converters for high-voltage direct current (HVDC) transmission systems, with emphasis on the most promising topologies from established and emerging dc-dc converters.Additionally, it highlights the key challenges of dc-dc converter scalability to HVDC applications, and narrows down the desired features for high-voltage dc-dc converters, considering both device and system perspectives. Attributes and limitations of each dc-dc converter considered in this study are explained in detail and supported by time-domain simulations. It is found that the front-to-front quasi two-level operated modular multilevel converter, transition arm modular converter and controlled transition bridge converter offer the best solutions for high-voltage dc-dc converters that do not compromise galvanic isolation and prevention of dc fault propagation within the dc network. Apart from dc fault response, the MMC dc auto transformer and the transformerless hybrid cascaded two-level converter offer the most efficient solutions for tapping and dc voltage matching of multi-terminal HVDC networks. Key words:High-voltage dc-dc converter; modular multilevel converter; multi-terminal high-voltage dc networks; and prevention of dc faults propagation.I.

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Section: Review Of Established and Emerging Dc–dc Converter Topologiesmentioning

confidence: 99%

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Adam

Gowaid

Finney

et al. 2016

IET Power Electronics

159

105

View full text Add to dashboard Cite

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“…In [10], a control platform for soft-switching multi-level inverters is proposed. The paper presents an FPGA-based prototyping tool for modular DC/AC converters.…”

Section: Introductionmentioning

confidence: 99%

Open-Source Hardware Platforms for Smart Converters with Cloud Connectivity

et al. 2019

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This paper presents the design and hardware implementation of open-source hardware dedicated to smart converter systems development. Smart converters are simple or interleaved converters. They are equipped with controllers that are able to online impedance match for the maximum power transfer. These conversion systems are particularly feasible for photovoltaic and all renewable energies systems working in continuous changing operating conditions. Smart converters represent promising solutions in recent energetic scenarios, in fact their application is deepening and widening. In this context, the availability of a hardware platform could represent a useful tool. The platform was conceived and released as an open hardware instrument for academy and industry to benefit from the improvements brought by the researchers’ community. The usage of a novel, open-source platform would allow many developers to design smart converters, focusing on algorithms instead of electronics, which could result in a better overall development ecosystem and rapid growth in the number of smart converter applications. The platform itself is proposed as a benchmark in the development and testing of different maximum power point tracking algorithms. The designed system is capable of accurate code implementations, allowing the testing of different current and voltage-controlled algorithms for different renewable energies systems. The circuit features a bi-directional radio frequency communication channel that enables real-time reading of measurements and parameters, and remote modification of both algorithm types and settings. The proposed system was developed and successfully tested in laboratory with a solar module simulator and with real photovoltaic generators. Experimental results indicate state-of-art performances as a converter, while enhanced smart features pave the way to system-level management, real-time diagnostics, and on-the-flight parameters change. Furthermore, the deployment feasibility allows different combinations and arrangements of several energy sources, converters (both single and multi-converters), and modulation strategies. To our knowledge, this project remains the only open-source hardware smart converter platform used for educational, research, and industrial purposes so far.

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“…[5][6]. Furthermore, soft-switching can be implemented in both 2-level and multi-level converters [7].…”

Section: Introductionmentioning

confidence: 99%

Power converter design options for the 12 kVdc bus system

Gattozzi¹,

Strank²,

Pish³

et al. 2017

2017 IEEE Electric Ship Technologies Symposium (ESTS)

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Abstract-The US Navy's recent reduction of the dc bus voltage for the new surface combatant, from the original 20 kV to the new target of 12 kV, opens up the design space to a broader range of options than was possible to date. This paper is an attempt to address the opportunities and risks associated with the adoption of multi-level topologies and Silicon-Carbide switches in the design of power converters for the new ships when compared with a more evolutionary innovative path offered by using soft-switching topologies with Silicon switch technology.

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Design of a Flexible Control Platform for Soft-Switching Multilevel Inverters

Cited by 27 publications

References 16 publications

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Open-Source Hardware Platforms for Smart Converters with Cloud Connectivity

Power converter design options for the 12 kVdc bus system

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