Open-Circuit Fault-Tolerant Control for a Three-Phase Current-Fed Dual Active Bridge DC–DC Converter

Le, Tat-Thang; Nguyen, Minh-Khai; Duong, Truong-Duy; Wang, Caisheng; Choi, Sewan

doi:10.1109/tie.2022.3156036

Cited by 19 publications

(10 citation statements)

References 33 publications

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“…The topology of modular isolated BIMIC, as shown in Figure 1, consists of n similar cells and one bidirectional port for the battery. In each cell, there are a boost inductor ( L j ), a switch ( S j ) ( j denotes the input number), a dc blocking capacitor C bj in order to avoid transformer saturation [24], and an isolated transformer ( T j ). VDR applied in each cell provides a reduced voltage stress on output capacitors C j 1 and C j 2 [25] and an increased voltage conversion ratio.…”

Section: Operation Principle Of the Modular Isolated Battery‐integrat...mentioning

confidence: 99%

A modular isolated battery‐integrated multiport step‐up DC–DC converter for hybrid energy applications

Mahmoodieh

Babaei

Sabahi

2022

IET Power Electronics

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In this paper, a modular isolated battery-integrated multiport step-up dc-dc converter is designed for simultaneous energy transfer from multiple renewable energy sources (RESs) to a load. The proposed converter offers a plug-and-play capability of input sources where each input can be connected to and disconnected from the converter. The power generation shortage/surplus can be managed by a battery inserted into a bidirectional port. Also, charging/discharging durations of battery are independent of switching duty ratios for input sources. In the presented converter, inputs are connected in parallel with a common ground through individual step-up dc-dc cells while outputs are connected in series with voltage doubler rectifiers (VDRs) to achieve higher voltage gains and lower voltage stress on output capacitors. Moreover, the leakage inductances of the isolated transformers with dc blocking capacitors provide quasi-resonant operation to alleviate high turn-off currents of switches and hard-switching in VDR diodes. Due to interactions of converter control loops, a MIMO closed-loop control system is designed to regulate the output voltage and output power of input sources at references. The simulation and experimental results obtained for three inputs verify performance of the developed converter in different modes.

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Section: Operation Principle Of the Modular Isolated Battery‐integrat...mentioning

confidence: 99%

A modular isolated battery‐integrated multiport step‐up DC–DC converter for hybrid energy applications

Mahmoodieh

Babaei

Sabahi

2022

IET Power Electronics

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“…From the perspective of achieving high-voltage and high-power applications, DCT topologies grounded in the Input-Series-Output-Parallel (ISOP) framework [9,10] and the modular multilevel architecture [11][12][13] are both feasible schemes. Within the ISOP paradigm, the dual-active-bridge (DAB) converter [14][15][16] is commonly used as a submodule (SM) to construct the DCT. The DAB proffers a simple structure, flexible control, and considerable power transmission capability.…”

Section: Introductionmentioning

confidence: 99%

An Improved AC-Link Voltage Matching Control for the Multiport Modular Multilevel DC Transformer in MVDC Applications

Chen,

Yu,

Wang

et al. 2024

Energies

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In this paper, an improved AC-link voltage matching control (IVM) strategy is proposed for the multiport modular multilevel DC transformer (M3DCT), which comprises a single-phase modular multilevel converter (MMC) and a series of cascaded H-bridge units. The objective of the proposed IVM strategy is to address the AC-link voltage mismatch phenomenon. Distinct from existing control methods, such as various phase-shifting control methods and the conventional AC-link voltage matching control strategy, the proposed IVM strategy orchestrates the operation of the M3DCT in an innovative fashion. It allows the sum of inserted submodule (SM) numbers in the upper and lower arms to be flexible, no longer confined to a specific SM number per arm. Consequently, the AC-link voltage of the M3DCT is maintained proximate to the matched operating condition, regardless of the degree of mismatch in the DC side voltage of the M3DCT. This enables the enhancement of the M3DCT’s overall operational performance, particularly under conditions of light loads within medium-voltage DC (MVDC) distribution systems. The correctness and effectiveness of the proposed control strategy and the corresponding analysis are substantiated through simulation results.

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“…It can be observed that although ZVS cannot be achieved under light load, the ZVS regions are expanded a lot within a wide voltage range. In addition to conventional DAB converters, blocking capacitors are also used in various modified DAB/DAB3 converters, such as CF [257], [258], half bridge [259], semi bridge [260], NPC bridge [261], [262], MMC-based [263], reconnection [264], multiport [265], and dual-transformer based converters [266], etc. In [257], DC blocking capacitors are added to a CF DAB3 converter shown in Fig.…”

Section: ) Voltage Bias Introducingmentioning

confidence: 99%

“…In addition to conventional DAB converters, blocking capacitors are also used in various modified DAB/DAB3 converters, such as CF [257], [258], half bridge [259], semi bridge [260], NPC bridge [261], [262], MMC-based [263], reconnection [264], multiport [265], and dual-transformer based converters [266], etc. In [257], DC blocking capacitors are added to a CF DAB3 converter shown in Fig. 15, which helps isolate the faulty phase under the proposed frozen-phase control.…”

Section: ) Voltage Bias Introducingmentioning

confidence: 99%

Review of Dual-Active-Bridge Converters With Topological Modifications

Sha

et al. 2023

IEEE Trans. Power Electron.

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Open-Circuit Fault-Tolerant Control for a Three-Phase Current-Fed Dual Active Bridge DC–DC Converter

Cited by 19 publications

References 33 publications

A modular isolated battery‐integrated multiport step‐up DC–DC converter for hybrid energy applications

A modular isolated battery‐integrated multiport step‐up DC–DC converter for hybrid energy applications

An Improved AC-Link Voltage Matching Control for the Multiport Modular Multilevel DC Transformer in MVDC Applications

Review of Dual-Active-Bridge Converters With Topological Modifications

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