Passive Capacitor Voltage Balancing of SiC-Based Three-Level Dual-Active-Bridge Converter Using Hybrid NPC-Flying Capacitor Structure

Feng, Han; Teng, Fei; Montes, Oscar Andrés; Awal, MA; Bipu, Rashed Hassan; Husain, Iqbal; Lukic, Srdjan

doi:10.1109/tpel.2021.3119210

Cited by 12 publications

(7 citation statements)

References 19 publications

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“…At the same time, the voltage stresses of the switches also become unbalanced, and overvoltage across devices will occur if the imbalance is severe. The DAB/DAB3 converters with NPC bridge cells have been carried out for PV generation systems [90]- [93], the bidirectional fast electric vehicle (EV) chargers [96], the interfaces of grid to microgrid [99], battery interface systems [101], [105], airborne wind turbines [103] and SSTs [104], [109].…”

Section: ) Npc Bridgesmentioning

confidence: 99%

“…In [108], the topology is a symmetrical DAB converter with two NPC half bridge cells. The topologies in [109]- [114] are the modifications of Fig. 5 (c).…”

Section: ) Npc Bridgesmentioning

confidence: 99%

“…5 (c). In [109] and [110], a flying capacitor is added in parallel with each pair of clamped diodes to solve the voltage unbalance issues. Meanwhile, NPC half bridge cells with clamped diodes and flying capacitors are also adopted in an LL-type DAB converter in [111] and [112].…”

Section: ) Npc Bridgesmentioning

confidence: 99%

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Review of Dual-Active-Bridge Converters With Topological Modifications

Sha

et al. 2023

IEEE Trans. Power Electron.

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Section: ) Npc Bridgesmentioning

confidence: 99%

“…In [108], the topology is a symmetrical DAB converter with two NPC half bridge cells. The topologies in [109]- [114] are the modifications of Fig. 5 (c).…”

Section: ) Npc Bridgesmentioning

confidence: 99%

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Review of Dual-Active-Bridge Converters With Topological Modifications

Sha

et al. 2023

IEEE Trans. Power Electron.

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“…Figure 2 illustrates the power structure of the proposed EPBC in which a bidirectional dual active bridge (DAB) dc-dc converter is employed. The DAB topology for dc-dc converter has several advantages such as high efficiency, high performance, inherent softswitching feature, high power density, and galvanic isolation [19]. Moreover, the DAB can provide bidirectional power flow, which permits flexible interfacing to other energy storage devices.…”

Section: Power Structure Of the Proposed Epbcmentioning

confidence: 99%

Smart Emergency EV-to-EV Portable Battery Charger

et al. 2022

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With the increase in the number of electric vehicles (EVs) and developments in their related charging infrastructures, consumers have still some concerns about some limiting factors in the EV industry such as battery life, charging station availability, electric grid capacity, limited driving range, and slow charging of batteries. Although some solutions are proposed for these limitations, they are not sufficiently efficient and cost-effective. Moreover, charging of EVs on-the-road is still a challenging issue which requires more innovation. This paper proposes a novel battery charger, known as an Emergency EV-to-EV Portable Battery Charger (EPBC), which provides a cost-effective solution for charging EVs on-the-road in emergency mode. The suggested smart charger can charge another EV based on the state of charge (SOC), capacity, and other important technical specifications of batteries in a safe and reliable manner. The smart charger can regulate the output voltage and the injected current to the EV simultaneously. To realize these features, a model free nonlinear integral backstepping control (MF-NIBC) is adopted to regulate the output voltage of the battery charger. By utilizing the actor and critic networks, a deep deterministic policy gradient (DDPG) is adopted to adjust the MF-NIBC controller. Finally, real-time tests based on the OPAL-RT setup are conducted to confirm the applicability and feasibility of the proposed EV-to-EV portable battery charger.

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“…This is based on detecting the voltage imbalance and the direction of power flow. Another NPC technology is a blocking capacitor used in active bridges and utilizing asymmetric voltage pulses on the sides of the transformer [30]. During the zero-voltage vector period, the optimum switching time allocated to the internal switching pairs will be changed to permit the charging of capacitors, irrespective of the power flow direction [31].…”

Section: Multilevel Dabmentioning

confidence: 99%

Analysis of the Dual Active Bridge-Based DC-DC Converter Topologies, High-Frequency Transformer, and Control Techniques

et al. 2022

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A power conversion system needs high efficiency for modern-day applications. A DC–DC isolated bidirectional dual active bridge-based converter promises high efficiency and reliability. There are several converter topologies available in the market claiming to be the best of their type, so it is essential to choose from them based on the best possible result for operation in a variety of applications. As a result, this article examines the characteristics, functionality, and benefits of dual active bridge-based DC–DC converter topologies and the other members of the family, as well as their limits and future advances. A high-frequency transformer is also an important device that is popular due to high leakage inductance in dual active bridge (DAB) converters. Therefore, a detailed review is presented, and after critical analysis, minimized leakage inductance in the toroidal transformer is obtained using the ANSYS Maxwell platform. Furthermore, this work includes a comprehensive examination of the control approaches for DAB converters, which is important for selecting the most appropriate technique for a certain application. The outcome of ANSYS Maxwell is integrated with a DAB-based boost inverter in the MATLAB/Simulink environment, and the results are validated with the help of an experimental prototype.

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Passive Capacitor Voltage Balancing of SiC-Based Three-Level Dual-Active-Bridge Converter Using Hybrid NPC-Flying Capacitor Structure

Cited by 12 publications

References 19 publications

Review of Dual-Active-Bridge Converters With Topological Modifications

Review of Dual-Active-Bridge Converters With Topological Modifications

Smart Emergency EV-to-EV Portable Battery Charger

Analysis of the Dual Active Bridge-Based DC-DC Converter Topologies, High-Frequency Transformer, and Control Techniques

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