Asymmetrical DC-DC Modular Multilevel Converter using Switching Cycle Control

Article Engineering, Electrical & Electronic

Modeling and Control Method for a Three-Level Hybrid Modular Multilevel Converter

Jian Liu et al.

Summary: This article introduces a new type of three-level hybrid modular multilevel converter, which reduces submodule number, improves current allocation, and utilizes repetitive control to increase power density and performance.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Article Engineering, Electrical & Electronic

Cell Capacitor Voltage Switching-Cycle Balancing Control for Modular Multilevel Converters

Boran Fan et al.

Summary: This study proposes a new control method for modular multilevel converters to achieve voltage balancing within a single switching cycle. Experimental results demonstrate the feasibility of this approach.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Review Engineering, Electrical & Electronic

Isolated and Nonisolated DC-to-DC Converters for Medium-Voltage DC Networks: A Review

Ibrahim Alhurayyis et al.

Summary: This paper presents a review of dc-dc power converter families in MVdc grids, focusing on isolated and nonisolated converters, as well as comparing other subfamilies in terms of specifications and characteristics. Additionally, the applications of these converters are provided with a focus on the essential requirements for each application.

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS (2021)

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Article Engineering, Electrical & Electronic

A Hybrid Modular Multilevel Converter Family With Higher Power Density and Efficiency

Jian Liu et al.

Summary: This article introduces the hybrid modular multilevel converter (HMMC) family, which can effectively reduce chain-link voltage, improve power density and efficiency. Compared with traditional MMC topologies, HMMC can save more devices, capacitors, and power losses at different medium voltage levels.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2021)

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Article Engineering, Electrical & Electronic

Power Cell Design and Assessment Methodology Based on a High-Current 10-kV SiC MOSFET Half-Bridge Module

Slavko Mocevic et al.

Summary: The article discusses the development of a systematic power cell design and assessment methodology for high-voltage and high-power SiC MOSFET modules to address challenges faced by MV converters. Through a hierarchical design process and component-level assessment, continuous efficient operation of the power cell was successfully achieved.

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS (2021)

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Proceedings Paper Green & Sustainable Science & Technology

High-performance Distributed Power Electronics Communication Network Design with 5 Gbps Data Rate and Sub-nanosecond Synchronization Accuracy

Yu Rong et al.

Summary: This paper investigates the approach to establish distributed control networks with sub-nanosecond synchronization accuracy and gigabits per second data rate dedicated for power electronics applications. A distributed communication and control system based on improved White Rabbit (WR) protocol with sub-ns synchronization accuracy is presented. The proposed system is verified using a four-cell 6 kV SiC-based modular converter.

2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) (2021)

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Proceedings Paper Green & Sustainable Science & Technology

Distributed Control for Modular Multilevel Converters Operated in Switching-cycle Balancing Mode

Boran Fan et al.

Summary: Traditional control of modular multilevel converters can lead to large capacitor voltage ripples, but the use of switching-cycle control can eliminate this dependency and enable operation in DC-DC mode. To address the challenges of precise arm-current shaping in each switching cycle, a distributed control architecture and custom-built controller system were designed to enhance flexibility and scalability.

2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) (2021)

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Article Engineering, Electrical & Electronic