A Dual-Active-Bridge-Based Single-Phase AC to DC Power Electronic Transformer With Advanced Features

Baranwal, Rohit; Castelino, Gysler; Iyer, Kartik V.; Basu, Kaushik; Mohan, Ned

doi:10.1109/tpel.2017.2669148

Cited by 57 publications

(21 citation statements)

References 47 publications

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“…Equations (5) and (6) include derivations of virtual fluxes and input currents. These equations can be simplified by using (7) and (8). Equation 7is derived from (1) by assuming the input voltage is balanced…”

Section: Active Rectifier Of Sstmentioning

confidence: 99%

“…By inserting (7), (8), and (9) into (5) and (6), the value of active and reactive power in the (k + 1)th sampling instant can be calculated by (10) and (11). The P k + 1 and Q k + 1 must be compared with the reference values.…”

Section: Active Rectifier Of Sstmentioning

confidence: 99%

“…In SSTs, low-voltage and high-voltage DC outputs might be available for use. Classical and commercialised form of SST includes three stages [2,3]: input PWM rectifier [4][5][6], highfrequency DC/DC converter [7][8][9][10], and output inverter [1,11]. Fully-controlled SST operates bidirectionally and transfers energy to both sides.…”

Section: Introductionmentioning

confidence: 99%

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In‐depth study of the application of solid‐state transformer in design of high‐power electric vehicle charging stations

Eshkevari¹,

Mosallanejad

Sepasian

2020

IET Electrical Systems in Transportation

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Solid-state transformers (SST) will play an important role in future electric power distribution. The SST usually used for traction and transportation systems. However, it can be employed for other applications. For example, electric vehicles (EVs) are confronting the increased demand now, and the service provider must expand the infrastructures such as the high-power EV charging stations in urban areas. One solution for designing a high-power charging station is the SST-based charging stations, which can be connected to the distribution network. This study proposes an SST-based EV charging station, which is connected to the 20 kV catenary without any low-frequency transformer and provides the necessary power for connected EVs without affecting the grid power quality. The proposed EV charging station has high flexibility such that it can be integrated with distributed generation. It also provides vehicle-to-grid, grid-to-vehicle and sun-to-vehicle features. Besides, it can inject reactive power to the grid based on its free capacity. This study also proposes an advance virtual flux predictive power controller to improve the immunity of this structure against voltage harmonics. Exact simulations have been done for a three-phase 20 kV/ 600 V/360 kVA station with different scenarios. Results verify the performance of this infrastructure.

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Section: Active Rectifier Of Sstmentioning

confidence: 99%

Section: Active Rectifier Of Sstmentioning

confidence: 99%

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In‐depth study of the application of solid‐state transformer in design of high‐power electric vehicle charging stations

Eshkevari¹,

Mosallanejad

Sepasian

2020

IET Electrical Systems in Transportation

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“…In [21], a modulation strategy is proposed, which achieves open-loop power factor correction and soft-switching. An extension of the modulation strategy has been discussed in [22]. In [23], a variable switching frequency-based modulation strategy has been proposed.…”

Section: Section I Introductionmentioning

confidence: 99%

A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application

Das

Weise

Basu

et al. 2019

IEEE Trans. Transp. Electrific.

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164

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In vehicle-to-grid applications, the battery charger of the electric vehicle (EV) needs to have a bidirectional power flow capability. Galvanic isolation is necessary for safety. An ac-dc bidirectional power converter with high-frequency isolation results in high power density, a key requirement for an on-board charger of an EV. Dual-active-bridge (DAB) converters are preferred in medium power and high voltage isolated dc-dc converters due to high power density and better efficiency. This paper presents a DAB-based three-phase ac-dc isolated converter with a novel modulation strategy that results in: 1) single-stage power conversion with no electrolytic capacitor, improving the reliability and power density; 2) open-loop power factor correction; 3) soft-switching of all semiconductor devices; and 4) a simple linear relationship between the control variable and the transferred active power. This paper presents a detailed analysis of the proposed operation, along with simulation results and experimental verification.

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“…Single stage capacitor less bidirectional topologies usually employ four-quadrant switches in the AC side converter [4]. The control for this type of topologies can either be Pulse Width Modulated (PWM) [4] or dual active bridge based [5]. In [6] a series resonant based control is implemented.…”

Section: Introductionmentioning

confidence: 99%

An Uni-directional Single-Phase Soft-switched Resonant High Frequency Link Inverter

G¹,

Basu

Gurunathan³

2018

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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Renewable and alternate energy grid integration is an area of interest in the recent years due to the advancements made in Solar and Fuel Cells. This paper considers a singlestage single phase uni-directional High-Frequency Transformer (HFT) link DC-AC converter for grid integration of Distributed Energy Resources (DER). The HFT helps by providing galvanic isolation to protect DER from single faults at significantly low cost and size in comparison with Low Frequency Transformer (LFT). Resonant based power conversion in relatively high voltage DC-DC converters results in higher efficiency and power density. Soft switching due to device capacitances and HFT parasitic leakage inductances enables high frequency of operation. This paper presents a novel Parallel Resonant Converter (PRC) based control strategy that results in high quality adjustable frequency and amplitude AC and soft switching of all devices in the entire range of operation. A well-known single stage isolated inverter topology is slightly modified to incorporate PRC based operation. Simulation results are presented to validate the topology and proposed modulation scheme.

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A Dual-Active-Bridge-Based Single-Phase AC to DC Power Electronic Transformer With Advanced Features

Cited by 57 publications

References 47 publications

In‐depth study of the application of solid‐state transformer in design of high‐power electric vehicle charging stations

In‐depth study of the application of solid‐state transformer in design of high‐power electric vehicle charging stations

A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application

An Uni-directional Single-Phase Soft-switched Resonant High Frequency Link Inverter

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