A Dual Half-Bridge <i>LLC</i> Resonant Converter With Magnetic Control for Battery Charger Application

Wei, Yuqi; Luo, Quanming; Du, Xiaoze; Altın, Necmi; Nasiri, Adel; Alonso, J.M.

doi:10.1109/tpel.2019.2922991

Cited by 112 publications

(36 citation statements)

References 26 publications

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“…Step 2 Selection of the resonant capacitor C r The design considerations for the resonant capacitor C r are: 1) voltage rating; 2) commercial available capacitance value. The voltage stress for the resonant capacitor can be expressed as (18) The voltage stress is set as 400 V, then, the minimum resonant capacitor C r,min equals 17.26 nF is calculated. Based on the commercial available capacitor values, finally, C r = 27 nF is selected.…”

Section: Design Methodologymentioning

confidence: 99%

“…Fig. 4 shows the converter model obtained by using the fundamental harmonic approximation (FHA) method, where V ac is the fundamental harmonic of the resonant network input voltage, and V p1 is the fundamental harmonic of the transformer primary side voltage [18].…”

Section: A Operation Principlementioning

confidence: 99%

“…Although the constant output voltage mode is verified and has been widely used, the constant output current mode especially its accuracy still needs to be proved. In [18], the experimental results demonstrate that the accuracy of the constant output current mode is unsatisfactory, so a variable switching frequency range is still required. Overall, all of these topologies still need to adopt either FC, PSC or PWM to implement the closedloop control.…”

Section: Introductionmentioning

confidence: 99%

“…To solve the abovementioned problems, the magnetic control (MC), also called variable inductor control, has been proposed for LED drivers and resonant converter applications [18]- [27]. For MC, the output voltage is regulated by adjusting the variable inductor value.…”

Section: Introductionmentioning

confidence: 99%

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Comprehensive Analysis and Design of LLC Resonant Converter With Magnetic Control

Wei¹,

Luo²,

Mantooth³

2019

CPSS TPEA

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Conventionally, LLC resonant converter adopts frequency control (FC) or combine FC with phase shift control (PSC) to regulate the output voltage. However, for both control strategies, a variable switching frequency operation range is required, which makes the magnetic component and driver circuit design complicated. In this paper, the magnetic control (MC) or variable inductor control is adopted for the LLC resonant converter. Thanks to MC, constant switching frequency and duty cycle can be implemented for the primary switches. A comprehensive analysis of the magnetically controlled LLC resonant converter is presented, which includes the operation principle, voltage gain, and soft switching operation. Meanwhile, a design methodology for LLC resonant converter with MC is proposed, especially the design considerations for the variable inductor are discussed. By adopting the proposed design methodology, the zero voltage switching (ZVS) operation for the primary switches and the zero current switching (ZCS) operation for the secondary rectifier can be achieved. Finally, a 200 W experimental setup is built to validate the theoretical analysis.

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Section: Design Methodologymentioning

confidence: 99%

Section: A Operation Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comprehensive Analysis and Design of LLC Resonant Converter With Magnetic Control

Wei¹,

Luo²,

Mantooth³

2019

CPSS TPEA

Self Cite

View full text Add to dashboard Cite

show abstract

“…Magnetic regulators have been presented in previous literature as a means to improve the operation of power converters [2]- [23]. They have successfully been employed in controlling resonant inverters for electronic ballast [4]- [9], DC-DC converters [10]- [14], power converters for photovoltaic (PV) applications [15], power factor correction (PFC) converters [16] [17], LED drivers [18]- [20], smart-grid applications [21], and battery charging [22] [23].…”

Section: Introductionmentioning

confidence: 99%

Investigation into Magnetic Control of Hard-Switching DC-DC Converters

Alonso¹,

Chinchero²,

Abdelmessih³

et al. 2020

Preprint

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In this paper an investigation into magnetic control (MC) of hard-switching (HS) DC-DC converters is carried out. The proposed control method is based on the modulation of the effective filter inductance of the converter when operating in discontinuous conduction mode (DCM). It is well known that the output characteristic of a HS DC-DC converter operating in DCM is dependent on the effective inductance of the output filter. This way, by using a variable inductance the output of the converter can be controlled. The proposed control method can be applied to any converter topology, namely buck, boost, buck-boost, flyback, forward, and so on. In this paper, the operation of the buck converter with MC is investigated in detail as a case study. This work proves that the proposed control method can be effectively used to control DC-DC converters on its own or by combination with other control parameters as duty cycle and/or frequency. An experimental prototype has been built to test the proposed control method and modeling process and to demonstrate its feasibility and possibilities.

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A Review on Advanced Control Techniques for Multi‐Input Power Converters for Various Applications

Priyanka

Duraisamy

2023

Smart Grids for Smart Cities Volume 1

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A Dual Half-Bridge LLC Resonant Converter With Magnetic Control for Battery Charger Application

Cited by 112 publications

References 26 publications

Comprehensive Analysis and Design of LLC Resonant Converter With Magnetic Control

Comprehensive Analysis and Design of LLC Resonant Converter With Magnetic Control

Investigation into Magnetic Control of Hard-Switching DC-DC Converters

A Review on Advanced Control Techniques for Multi‐Input Power Converters for Various Applications

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