Single-Stage Isolated Electrolytic Capacitor-Less EV Onboard Charger With Power Decoupling

Tausif, Ali; Jung, Ho‐Young; Choi, Sewan

doi:10.24295/cpsstpea.2019.00004

Cited by 32 publications

(8 citation statements)

References 22 publications

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“…However, a single-stage converter has less output voltage range and nonisolated converters have a limited conversion ratio [158]. The single-stage modular three-phase AC-DC converter is introduced in [209] to voltage regulation and PFC and single phase isolated AC-DC converter is proposed in [210] from a differential boost converter by using the AC decoupling waveform technique to address reliability issues. In contrast, multistage converter topologies are designed with two or more converter levels and high-power levels of the converter are provided efficient and reliable control for the charging system.…”

Section: A Ac-dc Convertersmentioning

confidence: 99%

Review of Electric Vehicle Charging Technologies, Standards, Architectures, and Converter Configurations

et al. 2023

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Electric Vehicles (EVs) are projected to be one of the major contributors to energy transition in global transportation due to their rapid expansion. High-level of EVs integration into the electricity grid will introduce many challenges for the power grid planning, operation, stability, standards, and safety. Therefore, the wide-scale adoption of EVs imposes research and development of charging systems and EV supply equipment (EVSE) to achieve expected charging solutions for EV batteries as well as to improve ancillary services. Analysis of the status of EV charging technologies is important to accelerate EV adoption with advanced control strategies to discover a remedial solution for negative impacts and to enhance desired charging efficiency and grid support. This paper presents a comprehensive review of EV charging technologies, international standards, the architecture of EV charging stations, and the power converter configurations of EV charging systems. The charging systems require a dedicated converter topology, a control strategy, compatibility with standards, and grid codes for charging and discharging to ensure optimum operation and enhance grid support. An overview of different charging systems in terms of onboard and offboard chargers, AC-DC and DC-DC converter configuration, and AC and DC-based charging station architectures are evaluated. In addition, recent charging systems which are integrated with renewable energy sources are presented to identify the power train of modern charging stations. Finally, future trends and challenges in EV charging and grid integration issues are summarized as the future direction of the research.INDEX TERMS Electric vehicle, charging configuration, grid integration, international standards, onboard and offboard charger, power converters.

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Section: A Ac-dc Convertersmentioning

confidence: 99%

Review of Electric Vehicle Charging Technologies, Standards, Architectures, and Converter Configurations

et al. 2023

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“…Having the charger on-board means that the EV owner does not need to carry an external charger or connect, and disconnect it each time the vehicle is charged. Making it easy to charge at various locations with compatible charging infrastructure [20]- [24]. An off-board charger, also known as a portable charger or external charger, is a separate device that is not integrated into the electric vehicle.…”

Section: Introductionmentioning

confidence: 99%

Power converter for battery charger of electric vehicle with controllable charging current

Suroso,

Prasetijo,

Winasis

et al. 2024

IJPEDS

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Research on electric vehicle chargers primarily focuses on improving charging technology to enhance the convenience, quality, efficiency, and affordability of charging electric vehicles. This paper discusses a different AC-DC power converter topology proposed as a potential candidate for electric vehicle battery charger. Using the proposed converter circuit, the charging process of electric vehicle battery can be simply adjusted to meet the battery requirement, and even for increasing the charging speed while avoiding overcharging of battery. During the charging process, if the voltage of battery approaches to the targeted battery voltage level, the charging current can be reduced gradually to zero. Hence it will prevent the battery from overcharging condition. Moreover, the ability of working at high power factor operation, low distortion of alternating current (AC) input current, and low direct current (DC) output current ripple are other features of the proposed charger circuits. Some test results of the proposed power converter were presented. The test results revealed potential features of the converter for battery charger of electric vehicle with power factor 0.9996, total harmonic distortion (THD) of AC current 2.73%, and low charging current ripple, i.e. 3.91%. Therefore, it minimizes the negative effects caused by ripples of charging current especially for lithium-ion batteries widely used in electric vehicles.

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“…Thus, the proposed converter can be expected to achieve the high-power density and the long-lifetime. It is noted that the integrated topology into the active power decoupling capability and the power conversion have been researched in the past work (16)- (19) . These active power decoupling methods do not require additional switching devices by applying common and differential operation modes to the interleave topology.…”

Section: Introductionmentioning

confidence: 99%

Isolated DC to Single-Phase AC Converter with Active Power Decoupling Capability Using Coupled Inductor

2022

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This paper proposes a novel active power decoupling circuit that is integrated with an interleaved boost converter for isolated DC to single-phase AC conversion applications. The proposed isolated converter consists of two full-bridge inverters with a coupled inductor, a small buffer capacitor for active power decoupling, and a diode rectifier. Further, the proposed isolated converter is controlled for active power decoupling and DC to single-phase AC power conversion independently by the coupling inductor and common-mode operation of the interleaved boost converter, respectively. This paper presents the control method of the proposed converter and design criteria of the passive components. In addition, the performance of the proposed isolated converter is demonstrated by the experimental results in order to confirm the validity of the proposed method. As the experimental results, the second-order harmonic due to the doubleline frequency power ripple is reduced by 84.5% owing to the active power decoupling capability. Finally, a maximum efficiency of 94.5% is obtained using the proposed converter.

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Single-Stage Isolated Electrolytic Capacitor-Less EV Onboard Charger With Power Decoupling

Cited by 32 publications

References 22 publications

Review of Electric Vehicle Charging Technologies, Standards, Architectures, and Converter Configurations

Review of Electric Vehicle Charging Technologies, Standards, Architectures, and Converter Configurations

Power converter for battery charger of electric vehicle with controllable charging current

Isolated DC to Single-Phase AC Converter with Active Power Decoupling Capability Using Coupled Inductor

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