A Simple ZVT Auxiliary Circuit for Totem-Pole Bridgeless PFC Rectifier

Yu, Ziwei; Xia, Yunfeng

doi:10.1109/tia.2019.2893268

Cited by 28 publications

(8 citation statements)

References 26 publications

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“…The study examines the totem pole configuration, a specific type of AC/DC converter with PFC [53][54][55][56][57][58][59][60][61][62][63]. In Figure 2, there are two SiC transistors (S D 1 , S D 2 ) and two GaN transistors (Q 1 , Q 2 ).…”

Section: Ac/dc Converter Model and Controlmentioning

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: Ac/dc Converter Model and Controlmentioning

confidence: 99%

Modeling and Control Simulation of Power Converters in Automotive Applications

Dini,

Saponara

2024

Applied Sciences

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“…The design of the memory elements of the CBR is the same as that of a conventional boost converter. In addition to the CBR, dual boost bridge-less PFC rectifiers [54][55][56][57][58][59], totem-pole bridge-less PFC rectifiers [60][61][62][63], and interleaved boost PFC rectifiers [64] are more commonly used [65] in several products that need PFC. On the three-phase system side, Vienna rectifiers have become very popular [66] since they have inherent PFC capability.…”

Section: Power Factor Correctionmentioning

confidence: 99%

Isolated DC-DC Power Converters for Simultaneous Charging of Electric Vehicle Batteries: Research Review, Design, High-Frequency Transformer Testing, Power Quality Concerns, and Future

B.S

Arunkumar

2023

Sustainability

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The transportation industry is transitioning from conventional Internal Combustion Engine Vehicles (ICVs) to Electric Vehicles (EVs) due to the depletion of fossil fuels and the rise in non-traditional energy sources. EVs are emerging as the new leaders in the industry. Some essential requirements necessary for the widespread adoption of EVs include sufficient charging stations with numerous chargers, less to no wait time before charging, quick charging, and better range. To enable a quicker transition from ICVs to EVs, commercial organizations and governments would have to put in a mammoth effort, given the low number of installed chargers in developing nations such as India. One solution to lower the waiting time is to have multiple vehicles charging simultaneously, which might involve charging two- and four-wheelers simultaneously, even though their battery voltage ratings differ. This paper begins by providing the details of the power sources for EV charging, the charging levels and connector types, along with the specifications of some of the commercial chargers. The necessity of AC-DC converters in EV charging systems is addressed along with the power quality concerns due to the increased penetration of EVs. Next, a review of the existing research and technology of isolated DC-DC converters for simultaneous charging of EV batteries is provided. Further, several potential isolated DC-DC converter topologies for simultaneous charging are described with their design and loss estimation. A summary of the existing products and projects with simultaneous charging features is provided. Finally, insight is given into the future of simultaneous charging.

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“…One is initial capacitance, Cj0, when the applied voltage or vds is zero, and the other term, C(vds), emulates a nonlinearity of output capacitance depending on vds. Referred to [13], C(vds) is represented in (3).…”

Section: 1mentioning

confidence: 99%

“…Previous works to derive resonant period for soft switching have been presented [1]- [11]. Transition time of a totem-pole bridgeless power factor correction converter with a ZVT cell has been proposed [2]- [3]. Resonant period for soft switching has also been calculated in LLC converter [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Derivation of Resonant Period for Soft Switching Considering Nonlinear Characteristics of Output Capacitance in Switching Device

et al. 2023

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Many soft switching techniques utilize a resonance between an inductor and parasitic output capacitors of switching devices. However, output capacitance has nonlinear characteristics, which obscures the resonant period for soft switching. In this paper, a new method is proposed to derive the resonant period by considering nonlinear characteristics of the output capacitance. The method can be applied to a bridge-type converter which utilizes resonance for soft switching. Other parasitic capacitances which affect the resonant period, are also considered. To verify the proposed method, simulations and experiments were performed with a 3-kVA prototype half bridge auxiliary resonant commutated pole inverter.

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A Simple ZVT Auxiliary Circuit for Totem-Pole Bridgeless PFC Rectifier

Cited by 28 publications

References 26 publications

Modeling and Control Simulation of Power Converters in Automotive Applications

Modeling and Control Simulation of Power Converters in Automotive Applications

Isolated DC-DC Power Converters for Simultaneous Charging of Electric Vehicle Batteries: Research Review, Design, High-Frequency Transformer Testing, Power Quality Concerns, and Future

Derivation of Resonant Period for Soft Switching Considering Nonlinear Characteristics of Output Capacitance in Switching Device

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