Design and experimental verification of on-board charger for electric vehicle

Xu, Rui; Fang, Wei; Liu, Xiaodong; Yang, Ling; Hu, Yong; Liu, Yanfei

doi:10.1109/peac.2014.7038073

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…In [44], the description of a unidirectional onboard charger (OBC) configuration includes modeling and design aspects. This configuration incorporates a step-up DC/DC converter following an AC/DC diode rectifier stage to achieve power factor correction (PFC).…”

Section: Related Workmentioning

confidence: 99%

Modeling and Control Simulation of Power Converters in Automotive Applications

Dini,

Saponara

2024

Applied Sciences

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This research introduces a model-based approach for the analysis and control of an onboard charger (OBC) system for contemporary electrified vehicles. The primary objective is to integrate the modeling of SiC/GaN MOSFETs electrothermal behaviors into a unified simulation framework. The motivation behind this project stems from the fact that existing literature often relies on finite element method (FEM) software to examine thermal dynamics, necessitating the development of complex models through partial derivative equations. Such intricate models are computationally demanding, making it difficult to integrate them with circuit equations in the same virtual environment. As a result, lengthy wait periods and a lack of communication between the electrothermal models limit the thorough study that can be conducted during the design stage. The selected case study for examination is a modular 1ϕ (single phase) onboard computer (OBC). This system comprises a dual active bridge (DAB) type DC/DC converter, which is positioned after a totem pole power factor correction (PFC) AC/DC converter. Specifically, the focus is directed toward a 7 kW onboard computer (OBC) utilizing high-voltage SiC/GaN MOSFETs to ensure optimal efficiency and performance. A systematic approach is presented for the assessment and selection of electronic components, employing circuit models for the totem pole power factor correction (PFC) and dual active bridge (DAB) converter. These models are employed in simulations closely mimicking real-world scenarios. Furthermore, rigorous testing of the generated models is conducted across a spectrum of real-world operating conditions to validate the stability of the implemented control algorithms. The validation process is bolstered by a comprehensive exploration of parametric variations relative to the nominal case. Notably, each simulation adheres to the recommended operational limits of the selected components and devices. Detailed data sheets encompassing electrothermal properties are provided for contextual reference.

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Section: Related Workmentioning

confidence: 99%

Modeling and Control Simulation of Power Converters in Automotive Applications

Dini,

Saponara

2024

Applied Sciences

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“…In Ref. [1], the authors present a modelling and design study of unidirectional OBC consisting of an AC-DC diode rectifier stage, followed by a step-up type of DC-DC converter to achieve PFC connected to the vehicle battery via a second Phase-Shifted-Full-Bridge (PSFB) type DC-DC converter. The paper presents the essential modelling of the electrical circuit necessary to define transfer functions required by the control algorithm.…”

Section: State Of the Art On Obc Modelling Simulation And Controlmentioning

confidence: 99%

Electro-Thermal Model-Based Design of Bidirectional On-Board Chargers in Hybrid and Full Electric Vehicles

Dini

Saponara

2021

Electronics

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In this paper, a model-based approach for the design of a bidirectional onboard charger (OBC) device for modern hybrid and fully electrified vehicles is proposed. The main objective and contribution of our study is to incorporate in the same simulation environment both modelling of electrical and thermal behaviour of switching devices. This is because most (if not all) of the studies in the literature present analyses of thermal behaviour based on the use of FEM (Finite Element Method) SWs, which in fact require the definition of complicated models based on partial derivative equations. The simulation of such accurate models is computationally expensive and, therefore, cannot be incorporated into the same virtual environment in which the circuit equations are solved. This requires long waiting times and also means that electrical and thermal models do not interact with each other, limiting the completeness of the analysis in the design phase. As a case study, we take as reference the architecture of a modular bidirectional single-phase OBC, consisting of a Totem Pole-type AC/DC converter with Power Factor Correction (PFC) followed by a Dual Active Bridge (DAB) type DC/DC converter. Specifically, we consider a 7 kW OBC, for which its modules consist of switching devices made with modern 900 V GaN (Gallium Nitrade) and 1200 V SiC (Silicon Carbide) technologies, to achieve maximum performance and efficiency. We present a procedure for sizing and selecting electronic devices based on the analysis of behaviour through circuit models of the Totem Pole PFC and DAB converter in order to perform validation by using simulations that are as realistic as possible. The developed models are tested under various operating conditions of practical interest in order to validate the robustness of the implemented control algorithms under varying operating conditions. The validation of the models and control loops is also enhanced by an exhaustive robustness analysis of the parametric variations of the model with respect to the nominal case. All simulations obtained respect the operating limits of the selected devices and components, for which its characteristics are reported in data sheets both in terms of electrical and thermal behaviour.

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Improving a battery charger architecture for electric vehicles with photovoltaic system

2020

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Summary In this study, a two‐stage battery charger architecture with high‐efficiency, multi‐input, and output half‐bridge LLC (HBLLC) resonance converter that performs a wide load range is proposed. The first input of the HBLLC is provided by the photovoltaic (PV) panel assembly on the vehicle. A high efficiency and fast maximum power point tracking (MPPT) algorithm has been developed for the PV panel to operate at the maximum power point. The other input is supplied by a grid‐connected AC‐DC bridgeless power factor correction (PFC) converter, which is controlled with the average current mode (ACM) control method. The most important feature that distinguishes the designed topology from previous studies is that it charges the low‐voltage battery through the PV panel. In previous studies, the low‐voltage battery was being charged via the high‐voltage battery. This allowed the high‐voltage battery to transfer power to the low‐voltage battery even when it was not charged. However, in the proposed architecture, the low‐voltage battery is fed by a PV panel. This condition allows the electric vehicle to take more miles with a single charge process. Furthermore, the proposed architecture reduces energy costs in the long term by providing some of the energy demanded from the grid. In addition, the proposed integrated battery charging circuit is intended to reduce the cost of additional cables. The system is designed as 3.1 kW power and operated under no load to full load. As for the performance of the proposed architecture, the peak efficiency of the LLC resonant converter is 95.3%. In addition, peak efficiency of the AC‐DC bridgeless PFC converter is 97.3%, while the power factor is higher than 0.99, input current total harmonic distortion (THD) is less than 5%, MPPT method accuracy is higher than 99%, and output voltage ripples (ΔV) is less than 1 V.

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Design and experimental verification of on-board charger for electric vehicle

Cited by 5 publications

References 8 publications

Modeling and Control Simulation of Power Converters in Automotive Applications

Modeling and Control Simulation of Power Converters in Automotive Applications

Electro-Thermal Model-Based Design of Bidirectional On-Board Chargers in Hybrid and Full Electric Vehicles

Improving a battery charger architecture for electric vehicles with photovoltaic system

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