Soft-switching operation strategy for three-phase multiport-active bridge DC-DC converters

Neubert, Markus; Hoek, Hauke van; Gottschlich, Jan; Doncker, Rik W. De

doi:10.1109/peds.2017.8289212

Cited by 4 publications

(6 citation statements)

References 12 publications

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“…The overall stability and efficiency of the DC grid are increased by controlling the power flow [26]. Therefore, a three-phase TAB converter is proposed for the MVDC grid in [26][27][28][29][30], as shown in Figure 12. The nominal voltage of the MVDC grid is 5 kV.…”

Section: Connection Of Medium Voltage Grid and Low Voltage Gridmentioning

confidence: 99%

“…This shows that the TAB converter can be optimally utilized for all operation modes in this application. A three-phase TAB converter rated 150 kW is designed to connect 5 kV MVDC and two LVDC sources in [26][27][28][29][30]. The modulation strategy and transformer design are considered to operate at a rated power [26].…”

Section: Connection Of Medium Voltage Grid and Low Voltage Gridmentioning

confidence: 99%

“…The soft-switching limitation in each port is analyzed. Subsequently, a parallel-phase operation (PPO) is proposed to extend the soft-switching component of the converter [27]. All ports achieve soft switching by applying the multiport duty cycle method.…”

Section: Connection Of Medium Voltage Grid and Low Voltage Gridmentioning

confidence: 99%

“…The future DC grid has potential in household applications, for which the TAB converter has an advantage [19][20][21][22]. It can be used to connect medium and low voltages in the DC distribution grid [26][27][28][29][30]. An uninterruptible power supply (UPS), which uses a battery to support the source in the worst-case scenario, is a suitable application for the TAB converter [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

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Applications of Triple Active Bridge Converter for Future Grid and Integrated Energy Systems

Pham

Wãda

2020

Energies

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Renewable energy systems and electric vehicles (EVs) are receiving much attention in industrial and scholarly communities owing to their roles in reducing pollutant emissions. Integrated energy systems (IES), which connect different types of renewable energies and storages, have become common in many applications, such as the grid-connected photovoltaic (PV) and battery systems, fuel cells and battery/supercapacitor in EVs. The advantages of all energy sources are maximized by utilizing connection and control strategies. Because many storage systems and household loads are mainly direct current (DC) types, the DC grid has considerable potential for increasing the efficiency of distribution grids in the future. In IES and future DC grid systems, the triple active bridge (TAB) converter is an isolated bidirectional DC-DC converter that has many advantages as a core circuit. Therefore, this paper reviews the characteristics of the TAB converter in current applications and suggests next-generation applications. First, the characteristics and operation modes of the TAB converter are introduced. An overview of all current applications of the TAB converter is then presented. The advantages and challenges of the TAB converter in each application are discussed. Thereafter, the potential future applications of the TAB converter with an adaptable power transmission design are presented.

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Section: Connection Of Medium Voltage Grid and Low Voltage Gridmentioning

confidence: 99%

Section: Connection Of Medium Voltage Grid and Low Voltage Gridmentioning

confidence: 99%

Section: Connection Of Medium Voltage Grid and Low Voltage Gridmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Applications of Triple Active Bridge Converter for Future Grid and Integrated Energy Systems

Pham

Wãda

2020

Energies

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“…By shaping the dv /dt and di /dt during the switching transitions, the switching losses and the EMI can be influenced. This provides the opportunity to develop highly efficient and compact medium-voltage dc-dc converters which can be used as flexible power routers in medium-voltage applications, e.g., for the interconnection of future dc grids (3) (30)- (32) . Figure 13 depicts a zero-voltage turn-on switching transition of a 10 kV SiC MOSFET from Wolfspeed operated in a three-phase triple-active bridge (3ph-TAB) converter at a dc-link voltage of 2.5 kV (30) .…”

Section: Zero-voltage Switchingmentioning

confidence: 99%

Design Challenges of SiC Devices for Low- and Medium-Voltage DC-DC Converters

et al. 2019

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Silicon carbide (SiC) devices are considered as key enablers for the development of highly efficient and compact dc-dc converters for low-and medium-voltage applications. Besides their high temperature capability and low conduction losses, they provide superior switching characteristics. This paper emphasizes the design challenges of SiC devices in the low-and medium-voltage ranges arising from their fast switching speeds. First, detailed measurement results on the switching characteristics of 1200 V SiC devices and the different leakage inductances are presented. The results are assessed with regard to the switching losses as well as the transient voltage and current overshoots. The impact on the switching behavior as a function of leakage inductances is shown. The leakage inductances also influence the resonance frequency of the power module and dc-dc converters. The determination of the size of the EMI filters is a crucial design aspect. Its significance is demonstrated using an 800 V dc-dc converter with commercially available SiC MOSFETs. In addition, zero-voltage switching is emphasized to reduce the impact of the parasitic elements of the module on the switching behavior. However, the performance of 10 kV SiC MOSFETs in a medium-voltage dc-dc converter shows that a significant amount of commutation energy is required to ensure a successful soft-switching transition.

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