Improved Instantaneous Current Control for High-Power Three-Phase Dual-Active Bridge DC–DC Converters

Engel, Stefan P.; Soltau, Nils; Stagge, Hanno; Doncker, Rik W. De

doi:10.1109/tpel.2013.2283868

Cited by 65 publications

(27 citation statements)

References 17 publications

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“…Furthermore, the phase currents and the output currents of the converter can be seamlessly adjusted within less than one switching period resulting in a highly dynamic control of the power flow using a feed-forward control [28], [29].…”

Section: Galvanically Isolated Dc-dc Convertersmentioning

confidence: 99%

Key Components of Modular Propulsion Systems for Next Generation Electric Vehicles

et al. 2017

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Abstract-The objective of this paper is to provide an overview of emerging technologies for modular power converter architectures for electric vehicles. Nowadays, the most common electrical drive-train architecture exhibits one single inverter which is directly tied to the battery. As a consequence, only one high-voltage battery module can be applied and the dc-link voltage of the inverter and its apparent power rating is directly dependent on the available battery voltage. To overcome this restriction, modern power converter architectures with a higher degree of freedom have been proposed. These architectures exhibit modular dc-dc converters to allow different battery technologies to be linked to drive inverters operating independently from each other. To make this development feasible, new components and technologies are evolving which enhance the efficiency over mission cycles while ensuring further integration of the power-converter architectures.Wide-bandgap power semiconductors enable high switching frequencies and miniaturization of passive devices. Smart topology enhancements and control methods allow a significant loss reduction, in particular at light loads, resulting in a higher efficiency of the drive train over the entire driving cycle. Highly integrated bidirectional battery charger systems with intelligent charging strategies inhibit battery degradation and provide opportunities for grid stabilization. It is demonstrated how these technologies are realized and implemented to contribute to the development of future electric vehicles.

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Section: Galvanically Isolated Dc-dc Convertersmentioning

confidence: 99%

Key Components of Modular Propulsion Systems for Next Generation Electric Vehicles

et al. 2017

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“…Due to the advancements of power electronics technology, high-power de-de converters can provide power flow control functions in MTDC grids; enhancing the flexibility of grid operation [16]- [18], [23] , [31]- [34]. By adjusting the de-de converter transformation ratio, the voltage at one terminal of the converter, or the power flowing through the converter, can be regulated, adding a degree of freedom to the control of the MTDC grid [22] .…”

Section: Flexible Operation Of Mtdc Gridsmentioning

confidence: 99%

Flexible Control of Power Flow in Multiterminal DC Grids Using DC–DC Converter

Rouzbehi

Candela

Luna

et al. 2016

IEEE J. Emerg. Sel. Topics Power Electron.

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Abstract-This paper proposes an efficient control framework that utilizes de-de converters to achieve flexible power flow control in multiterminal de (MTDC) grids. The de-de converter employed in this paper is connected in cascade with the de transmission line, and is therefore named cascaded power flow controller (CPFC). In this paper, a two-layer control strategy is developed for the operation and control of voltage source converter stations and CPFC station in MTDC grids. At the primary control layer, a novel differential voltage droop control is developed, while at the secondary control layer, a modified de power flow algorithm-employing the new CPFC frameworkis implemented. The overall control strategy enables the CPFC to regulate the power flow in the de transmission line. The primary control guarantees the transient stability of the CPFC, and the secondary control system ensures the desired steady-state operation. The proposed voltage droop control framework helps the MTDC grid to remain stable in the event of a communication failure between the primary and secondary control layers. Static analysis and dynamic simulations are performed on the CIGRE B4 de grid test system, in order to confirm the effectiveness of the proposed control framework for power flow regulation in MTDC grids.Index Terms-CIGRE B4 de grid, de power flow control, multiterminal de (MTDC) grid, power system control, voltage droop control.

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“…DAB is becoming popular as the isolation stage for SSTs [25]- [27]. The DAB used as the isolation stage for the TIPS topology has a 3-phase configuration (Fig.…”

Section: Dc-dc Dab Stage and Hf Transformermentioning

confidence: 99%

Solid-State Transformer and MV Grid Tie Applications Enabled by 15 kV SiC IGBTs and 10 kV SiC MOSFETs Based Multilevel Converters

Madhusoodhanan

Tripathi

Patel

et al. 2015

IEEE Trans. on Ind. Applicat.

312

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Medium Voltage (MV) SiC devices have been developed recently which can be used for 3-phase, MV grid tie applications. Two such devices-15 kV SiC IGBT and 10 kV SiC MOSFET have opened up the possibilities of looking into different converter topologies for MV distribution grid interface. These can be used in MV drives, active filter applications or as the active front end converter for Solid State Transformers (SST). Transformerless Intelligent Power Substation (TIPS) is one such application for these devices. TIPS is proposed as a 3-phase SST interconnecting 13.8 kV distribution grid with 480 V utility grid. It is an all SiC devices based multi-stage SST. This paper focuses on the advantages, design considerations and challenges associated with the operation of converters using these devices keeping TIPS as the topology of reference. Efficiency of TIPS topology is also calculated using the experimentally measured loss data of the devices and the high frequency transformer. Experimental results captured on a developed prototype of TIPS along with its measured efficiency are also given.Index Terms-Active front end converter, medium voltage grid tie application, silicon carbide, solid state transformer. NOMENCLATUREZ out rect (s) FEC closed loop output impedance in forward direction Z in dab (s) DAB closed loop input impedance in forward direction V dc rect FEC dc bus voltage V dc dab DAB dc bus voltage C dc MV side dc bus capacitance m FEC modulation index K v , T v FEC dc bus voltage controller gain, time constant K i , T i FEC current controller gain, time constant ω ibw FEC current control loop bandwidth L s , R s FEC line inductance and resistance per phase i load rect FEC load current i d FEC d-axis current i d1 DAB d-axis current L m , C p , R c DAB magnetizing inductance with its parasitic capacitance and resistance C m DAB primary winding mutual capacitance L l1 , C 1 , R 1 DAB leakage inductance with its parasitic capacitance and resistance L f 1 , R df 1 DAB filter inductance and its parasitic resistance L s1 , R s1 DAB secondary inductance and its series resistance φ DAB phase angle N DAB turns ratio K v1 , T v1 DAB dc bus voltage controller gain, time constant K i1 , T i1 DAB current controller gain, time constant T f DAB feedback path time constant V dc low DAB low voltage side dc bus voltage i load dab DAB load current C dc low , E SR DAB low voltage side dc bus capacitor and its ESR R load dab DAB parallel load model

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Improved Instantaneous Current Control for High-Power Three-Phase Dual-Active Bridge DC–DC Converters

Cited by 65 publications

References 17 publications

Key Components of Modular Propulsion Systems for Next Generation Electric Vehicles

Key Components of Modular Propulsion Systems for Next Generation Electric Vehicles

Flexible Control of Power Flow in Multiterminal DC Grids Using DC–DC Converter

Solid-State Transformer and MV Grid Tie Applications Enabled by 15 kV SiC IGBTs and 10 kV SiC MOSFETs Based Multilevel Converters

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