Single-stage LLC AC/DC converter with wide input range and low bus voltage

Gao, Jingxiang; Zhang, Junhong; Zhu, Zhongni; Song, Qingguo

doi:10.1007/s43236-020-00150-3

Cited by 4 publications

(3 citation statements)

References 21 publications

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“…In addition, some approaches, including PFM and PWM, PFM and PSM, PFM and PWAM, PSM and Asymmetrical PWM (APWM), and so forth, have been combined to enhance performance and operation of the LLC resonant converters. For instance, in [66,[191][192][193][194][195][196][197], a combination of PWM and PFM has been used, which limits the switching frequency range due to the hybrid control approach. Nevertheless, it inherits the advantages and disadvantages, as mentioned earlier for PFM and PWM control methods.…”

Section: Llc Resonantconverter Different Control Approachesmentioning

confidence: 99%

Application-Oriented Review of the LLC-Based Resonant Converters

Shahsevani,

Beiranvand

2024

IEEE Access

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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.

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Section: Llc Resonantconverter Different Control Approachesmentioning

confidence: 99%

Application-Oriented Review of the LLC-Based Resonant Converters

Shahsevani,

Beiranvand

2024

IEEE Access

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“…With the increase of the detection depth, the output voltage and power of the transmitter continued to upgrade [13][14][15][16]. The DC power supply of the transmitter had higher voltage [17][18][19][20][21]. Aiming to reduce the switching stress of the semiconductor device, a DC power supply with two isolated full-bridge AC/DC a Correspondence to: Gang Li.…”

Section: Introductionmentioning

confidence: 99%

Voltage Equalizing Strategy for Cascaded Constant Current Power Supply

Zhang,

Shi,

2024

IEEJ Transactions Elec Engng

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In order to detect the underground medium with large depth, the transmitter of electromagnetic sounding instrument has higher and higher power and voltage. A novel voltage equalizing strategy for cascaded constant current power supply using in electromagnetic transmitter was proposed in this paper. The cascaded topology of the transmitter has two isolated full‐bridge AC/DC converters, which had same input source and were connected in series on the output side. The mathematical model based on state space average method was analyzed. After simplifying the circuit, the state space equation was used to describe the circuit model. The stability and frequency characteristics of the system were analyzed. Aiming at the constant current output and the output voltage balance of the two converters, the system coupling model was established. The constant current controller and voltage equalizing controller were designed with decoupling method. A 300 W prototype was built and the experimental results verified the performance of the proposed method. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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“…A Li-ion battery-fed high-e ciency LLC resonant converter with a maximum e ciency of 95% [10] been proposed for EV and energy storage systems. In addition to this, a single-stage LLC AC-DC converter for a wide input range was validated in [11].…”

Section: Introductionmentioning

confidence: 99%

Real-time Implementation and Experimental Verification of Dual-Switch Coupled Inductor (DSCI) Converter based BLDC Drive for Electric Vehicle Applications

Chandran¹,

Mylsamy²,

Umapathy³

2022

Preprint

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Large heat output and burning have recently emerged as critical challenges in electric vehicles (EV). The main causes of this issue are the use of spark-propelled motors and in-built complicated circuits. This research attempts to address the aforementioned issues by providing a reduced switch converter for Brush-Less DC (BLDC) motors. A Dual-Switch Coupled Inductor (DSCI) converter is proposed based on the BLDC drive for electric vehicle (EV) applications. Because the DSCI converter has only two switches, the need for a gate-driven circuit is greatly minimized, which is responsible for high heat dissipation and complicates the circuit. Theoretical analysis is performed on the operating principles, switching frequencies, component design concerns, maximum voltage gain, and efficiency, as well as simulations using Matlab® Simulink. The efficiency of the DSCI converter obtained is 98.23%. The converter is used to drive a 0.75-kW BLDC motor, and the simulation results are validated with a hardware prototype model at 3000 rpm. At the end of the paper, the explored results for both hardware and simulation and comparative studies with earlier work are described in detail.

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Single-stage LLC AC/DC converter with wide input range and low bus voltage

Cited by 4 publications

References 21 publications

Application-Oriented Review of the LLC-Based Resonant Converters

Application-Oriented Review of the LLC-Based Resonant Converters

Voltage Equalizing Strategy for Cascaded Constant Current Power Supply

Real-time Implementation and Experimental Verification of Dual-Switch Coupled Inductor (DSCI) Converter based BLDC Drive for Electric Vehicle Applications

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