Phase-Shifted Full Bridge DC–DC Converter for Photovoltaic MVDC Power Collection Networks

Métayer, Pierre Le; Loeuillet, Quentin; Wallart, François; Buttay, Cyril; Dujić, Dražen; Dworakowski, Piotr

doi:10.1109/access.2023.3247952

Cited by 17 publications

(6 citation statements)

References 30 publications

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“…The unidirectional structure of the converter is beneficial in terms of cost and simplicity of hardware implementation of the MV circuit components, as presented in [8]. The design of the phase-shifted full bridge DC-DC (PSFB) converter is presented considering ratings of 250 kW power, 1.2 kV input, and 20 kV output.…”

Section: A Structure Of Convertersmentioning

confidence: 99%

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Local-Stability Analysis of Cascaded Control for a Switching Power Converter

Afkar,

Gavagsaz-Ghoachani,

Phattanasak

et al. 2024

Journal of Robotics and Control

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Switching power converters are integral in various applications like transportation and renewable energy. After their design, ensuring stable closed-loop poles is critical to maintain safe operating conditions. This study focuses on a switching DC-DC boost converter with a cascade control approach using an energy controller for the outer loop and indirect-sliding mode control for the inner loop. The research objective involves investigating stability through eigenvalue evaluation at different operating points. A large-signal average model is applied to make controlled performance independent of the operating point by fixing system poles. Nonlinear controllers, specifically indirect-sliding mode control, are chosen for their robustness, constant switching frequency, and implementation ease. Results indicate that insufficient decoupling leads to eigenvalue displacement, impacting control parameter choices. The research contribution is investigating the local stability of cascaded control, considering its advantageous implications for both performance and design. This study contributes to the understanding of switching power converters' stability, emphasizing the proposed methodology's broader applicability to diverse converter structures. The proposed approach, applicable to various switching power converters, sheds light on the importance of proper decoupling between outer and inner loop dynamics.

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Section: A Structure Of Convertersmentioning

confidence: 99%

“…, the second-order equation in(8) can be solved. Since the output voltage reference is constant in steady state, therefore, in (4) 𝑑𝑦 𝑟𝑒𝑓 𝑑𝑡 = 0.…”

mentioning

confidence: 99%

Local-Stability Analysis of Cascaded Control for a Switching Power Converter

Afkar,

Gavagsaz-Ghoachani,

Phattanasak

et al. 2024

Journal of Robotics and Control

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“…The flow of electricity through the switches S P2 and S P3 is shown in Equation (34), which is also referred to as the secondary current formula of the perfect transformer.…”

Section: Circuit Analysismentioning

confidence: 99%

Efficiency and dynamic characteristics of improved dual‐stage power converter setup with advanced model predictive controller for electric vehicle battery charging

Kalirajan

Iruthayarajan

Kamaraja

2023

Circuit Theory & Apps

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SummaryThis paper proposes an advanced power converter setup to charge an electric vehicle battery from a renewable energy source, such as solar photovoltaic. An improved Z‐source DC–DC boost converter (IZSBC) is utilized in the first stage. A synchronous rectifier (SR) of a phase‐shifted full‐bridge converter (PSFBC) with continuous conduction mode (CCM) is employed in the second stage using the zero voltage switching (ZVS) technique to provide isolation between the source and the load. To address the disadvantage of undesirable dynamic characteristics of the PSFBC‐SR, an advanced voltage control using the advanced model predictive controller (AMPC) is suggested to improve the dynamic characteristic of the PSFBC‐SR converter and prevent output voltage overshoot. An AMPC‐based new control method is preferred to eliminate body‐diode conduction for improved efficiency at any load conditions. Simulation and experimental designs of 0.5 kW with a 25 V DC input from the SPV, a boosted output of 100 V for a 60 V, 16 Ah battery bank and switching frequencies of 100 and 250 kHz for IZSBC and PSFBC‐SR, respectively, are produced and evaluated. Results show an efficiency of 93.7% with 31.44 W loss in simulations and 93.94% with 30.25 W loss in hardware tests. The preferred system has fast dynamics and is robust to sudden load impedance changes, thereby improving current tracking and reducing converter losses. The AMPC strategy proposed in this paper can increase conversion efficiency and control the output voltage without additional gain tuning.

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“…The PSFB LVDC bus voltage regulation is presented in detail by the authors in [23]. The PI controller is tuned according to the presence of resonance in the transfer function of the system, dictated by the voltage ratio and leakage inductance of the transformer.…”

Section: Control Of DC Sst For Frtmentioning

confidence: 99%

Fault ride through of DC solid state transformer in medium voltage DC systems

Le Metayer,

Dujic,

Buttay

et al. 2023

IET Conf. Proc.

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Phase-Shifted Full Bridge DC–DC Converter for Photovoltaic MVDC Power Collection Networks

Cited by 17 publications

References 30 publications

Local-Stability Analysis of Cascaded Control for a Switching Power Converter

Local-Stability Analysis of Cascaded Control for a Switching Power Converter

Efficiency and dynamic characteristics of improved dual‐stage power converter setup with advanced model predictive controller for electric vehicle battery charging

Fault ride through of DC solid state transformer in medium voltage DC systems

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