Unidirectional Three-Phase Voltage-Doubler SEPIC PFC Rectifier

Costa, Paulo Junior Silva; Ewerling, Marcos Vinicius Mosconi; Font, Carlos Henrique Illa; Lazzarin, Telles Brunelli

doi:10.1109/tpel.2020.3037480

Cited by 21 publications

(10 citation statements)

References 30 publications

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“…Unlike the studies provided in [21–31], the concept of interleaving in phase‐modular PFC rectifiers is not reported. In this regard, this paper presents a three‐phase unidirectional EV UFC designed to operate in DCM.…”

Section: Introductionmentioning

confidence: 99%

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Development of a three‐phase interleaved converter based on SEPIC DC–DC converter operating in discontinuous conduction mode for ultra‐fast electric vehicle charging stations

Hussein

Abdi

Massoud

2021

IET Power Electronics

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One of the main challenges that impact transportation systems electrification is their batteries' charging process. This work presents the development of a three-phase ultra-fast Electric Vehicle (EV) charger based on the SEPIC converter. Since SEPIC operating in Discontinuous Conduction Mode (DCM) is usually recommended for low-power applications, this work proposes a scheme for its employment in high-power EV chargers. This is achieved through three single-phase modules of interleaved SEPIC converters. The presented scheme ensures reducing the stresses on the semiconductor devices since the power is divided over the interleaved modules. The design addresses DCM operation in terms of both capacitor voltage and inductor current (DCVM and DICM, respectively). This paper examines the analysis of the proposed converter and the small-signal modelling. Also, the converter efficiency is assessed. A Constant Current (CC) charging approach is deployed for charging the EV battery. The validation of the designs is explored through simulation results using MATLAB/Simulink platform. A 4 kW experimental prototype for the interleaved SEPIC DC-DC converter is built to verify the claimed contributions with 92% efficiency.

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Section: Introductionmentioning

confidence: 99%

“…It also prevents the ride‐through capabilities due to the coupling between the two interleaved levels. In [26], a unidirectional three‐phase DCM SEPIC‐based PFC rectifier has been proposed. The system reduces the voltage stresses on the components, but this comes at the expense of using a large number of components.…”

Section: Introductionmentioning

confidence: 99%

Development of a three‐phase interleaved converter based on SEPIC DC–DC converter operating in discontinuous conduction mode for ultra‐fast electric vehicle charging stations

Hussein

Abdi

Massoud

2021

IET Power Electronics

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“…U nidirectional power flow multilevel rectifiers are increasingly being applied and favored in industrial scenarios where bidirectional power flow or feedback is prohibited, due to their advantages such as fewer active power switching devices, lower device stress, higher power density and energy conversion efficiency, and better economic benefits 1–3 . Typical scenarios of unidirectional power flow include power supply systems for naval propulsions, aircraft, and front‐end active rectification devices for fans, pumps, and electric vehicles 4–6 …”

Section: Introductionmentioning

confidence: 99%

Hybrid passivity‐based control of a three single‐phase star‐connected unidirectional five‐level rectifier with a space vector pulse‐width modulation algorithm for voltage balance

Cheng,

Yang,

Wang

et al. 2023

Circuit Theory & Apps

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SummaryThe unidirectional multilevel rectifier has been used in numerous industrial applications due to its reduced active power switches, higher power density, and lower cost compared to conventional bidirectional converters. Recently, the unidirectional five‐level rectifier has been proposed for its lower device stress and the potential for extension to higher levels. However, it adopts a conventional linear proportional integral (PI) control strategy and sinusoidal pulse‐width modulation (SPWM) method, resulting in a complex control structure, particularly for the balance control of the midpoint voltage, and suboptimal dynamic performance. To address this issue and enhance system's large‐scale stability, a hybrid passivity‐based control (PBC) strategy, along with a simplified mathematical model, has been proposed. The hybrid PBC control strategy includes an outer loop active disturbance rejection (ADR)‐PI controller and inner loop PBC controller, providing a simple overall control structure and strong anti‐interference ability. Additionally, a space vector pulse‐width modulation (SVPWM) algorithm has been briefly introduced and applied to further improve the recovery and balance speed of the DC‐side capacitor voltages. Simulation and experiment results have validated the feasibility and effectiveness of the proposed hybrid PBC strategy and the SVPWM algorithm.

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“…Also, in Ref. [16], a unidirectional three‐phase SEPIC‐based PFC rectifier has been presented. It has a large number of components with reduced voltage stresses on the involved components, but it has no galvanic isolation, and it requires an input AC filter.…”

Section: Introductionmentioning

confidence: 99%

“…Different EVs chargers' topologies were proposed in the literature [8][9][10][11][12][13][14][15][16][17][18], where generally the charger consists of a front-end AC-DC converter followed by a DC-DC converter [19,20], where a high-frequency transformer can be employed when needed to provide the required isolation -79 [13,19]. The AC-DC converter should draw sinusoidal currents from the power grid to ensure operating with an acceptable power quality level.…”

Section: Introductionmentioning

confidence: 99%

An isolated‐boost‐converter‐based unidirectional three‐phase off‐board fast charger for electric vehicles

Elserougi

Abdelsalam

Massoud

2021

IET Electrical Syst in Trans

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In this work, a novel three‐phase unidirectional off‐board Electric Vehicles (EVs) fast charger is proposed. Each phase of the proposed converter consists of a two‐stage converter. The first stage is an AC–DC front‐end converter with power factor correction (PFC) control. The front‐end AC–DC converter is based on an isolated boost converter, which has a boosting capability and provides galvanic isolation. In this stage, parallel‐in parallel‐out isolated boost converter modules are employed in each phase. This enables sharing the current among modules to avoid implementing one module with a high current rating to meet the fast‐charging requirements. The multimodule option provides fault‐ride through capability for the proposed charger. The DC outputs of involved phases, that is, three isolated DC voltages, are fed to three cascaded DC–DC unidirectional buck converters. The charging terminals are used to charge the EV battery through a filter inductor with a charging current controller's aid. A detailed illustration of the suggested closed‐loop controllers is presented to ensure a successful operation for the proposed architecture. A simulation case study for a 25‐kW charger is presented. Finally, a 1‐kW prototype is implemented for experimental validation.

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Unidirectional Three-Phase Voltage-Doubler SEPIC PFC Rectifier

Cited by 21 publications

References 30 publications

Development of a three‐phase interleaved converter based on SEPIC DC–DC converter operating in discontinuous conduction mode for ultra‐fast electric vehicle charging stations

Development of a three‐phase interleaved converter based on SEPIC DC–DC converter operating in discontinuous conduction mode for ultra‐fast electric vehicle charging stations

Hybrid passivity‐based control of a three single‐phase star‐connected unidirectional five‐level rectifier with a space vector pulse‐width modulation algorithm for voltage balance

An isolated‐boost‐converter‐based unidirectional three‐phase off‐board fast charger for electric vehicles

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