Analysis of a Magnetically Controlled Single Stage LLC Resonant Converter

Wei, Yuqi; Luo, Quanming; Woldegiorgis, Dereje; Mhiesan, Haider; Mantooth, Alan

doi:10.1109/apec39645.2020.9124393

Cited by 5 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This configuration uses an additional capacitor and a series switch in the resonant tank, which complicate the circuit, increase its cost and power loss. A single-stage interleaved LLC resonant converter with a variable inductor for PFC application was introduced in [ 176 ] and [177], too. However, challenges associated with variable inductors are remained.…”

Section: Improved Power Factor Correctionmentioning

confidence: 99%

Application-Oriented Review of the LLC-Based Resonant Converters

Shahsevani,

Beiranvand

2024

IEEE Access

View full text Add to dashboard Cite

The LLC resonant converter is a widely utilized power electronics converter, due to its numerous industrial and domestic applications. This converter offers some advantages such as soft-switching operation of all switches, high efficiency, high power density, low voltage stress, minimal electromagnetic interference (EMI) noise, input/output isolation, wide input/output voltage range, and reliable and good performance under the wide load variation ranges, as well as good light-load operation. However, this converter has certain limitations, which can be addressed to enhance its operation and efficiency. This paper provides an in-depth review and comparison of various LLC-based resonant converter configurations, focusing on their operational principles, mathematical analysis, control methods, and some practical applications including electric vehicle chargers, TV power supplies, LED drivers, photovoltaic cells, HVDC production, fuel cells, and wireless power transfer applications. By examining the strengths and weaknesses of the different LLC resonant converter designs, this study aims to contribute to the ongoing research efforts in improving the performance and efficiency of this important power electronics converter. INDEX TERMS DC-DC power conversion, LLC resonant converter, resonant power conversion.

show abstract

Section: Improved Power Factor Correctionmentioning

confidence: 99%

Application-Oriented Review of the LLC-Based Resonant Converters

Shahsevani,

Beiranvand

2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Variable inductors have been employed in a variety of power electronic converter applications, mostly based on the previously stated techniques. Lighting drivers [70,[107][108][109][110][111][112][113][114][115][116], resonant converters [79,80,[117][118][119][120][121][122][123][124][125][126][127][128][129], dual-active-bridge converters [72,130,131], wireless power transmission [54,[132][133][134][135][136][137][138], reactive power compensation and voltage control in power systems [139][140][141], and maximum power point tracking (MPPT) [142,143] are all examples of applications that utilize the tuning inductance concept. Emphasizing the advantages and drawbacks of employing variable-inductance inductors in these converters is essential.…”

Section: Applicationsmentioning

confidence: 99%

“…Current-controlled inductors have been widely employed in a variety of resonant converter topologies to solve a range of issues [79,80,[117][118][119][120][121][122][123][124][125][126][127][128][129]. For instance, operating two interleaved LLC resonant converters at the same switching frequency could result in a significant current imbalance due to mismatches between the components of the two converters.…”

Section: Resonant Convertersmentioning

confidence: 99%

A Review of Tunable Inductors for Power Electronics: Techniques and Applications

Azim

2024

Preprint

View full text Add to dashboard Cite

“…The technology of variable inductor has been widely used in many applications, such as chargers for electric vehicles, wireless power transfer equipment, LED drivers, PFC converters, etc. [28][29][30][31][32][33][34][35][36][37][38][39]. The bidirectional DC-DC converter based on variable inductor for electric vehicles was proposed in [28,29], which enhances the current processing ability of the inductor and reduces the twice line frequency output current ripple.…”

Section: Introductionmentioning

confidence: 99%

“…In [30], a variable inductor-based wireless power transfer system was proposed to reduce the current through the switches, improve the efficiency, and reduce EMI, also eliminating circulating current to ensure zero-voltage switching. In [31][32][33][34], a variable inductor is introduced to replace the resonant inductor of the resonant converter, which ensures that the resonant converter can operate at the resonant frequency to improve conversion efficiency. In recent years, the variable inductor has also been extensively used in Boost PFC which operates in critical conduction mode (CRM) [35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Cuk PFC Converter Based on Variable Inductor

et al. 2023

View full text Add to dashboard Cite

When the input inductor operates in discontinuous current mode (DCM), the Cuk converter can automatically achieve power factor correction (PFC) function with only a simple voltage mode control loop. However, the conventional Cuk PFC converter suffers from high intermediate capacitor voltage because of the lack of feedback of the intermediate capacitor voltage and relatively low power factor (PF). In this paper, a Cuk PFC converter using variable inductor which varies with the transient rectified input voltage is proposed to enhance the PF and reduce the intermediate capacitor voltage by injecting a controlled DC bias current into the auxiliary winding of the variable input inductor. The operating principles of the proposed Cuk PFC converter based on variable inductor are analyzed in detail, and the analysis of PF, the voltage of intermediate capacitor, and design considerations are provided. To verify the feasibility of the proposed scheme and compare the characteristics of both the traditional and proposed Cuk PFC converter, a 108W experimental prototype of the proposed converter is built and tested. The experimental results show that the proposed Cuk PFC converter can significantly enhance the PF, decrease the intermediate capacitor voltage, and increase efficiency compared with the traditional Cuk PFC converter.

show abstract

Analysis of a Magnetically Controlled Single Stage LLC Resonant Converter

Cited by 5 publications

References 15 publications

Application-Oriented Review of the LLC-Based Resonant Converters

Application-Oriented Review of the LLC-Based Resonant Converters

A Review of Tunable Inductors for Power Electronics: Techniques and Applications

Cuk PFC Converter Based on Variable Inductor

Contact Info

Product

Resources

About