Design of wide input voltage range high step-up DC-DC converter based on secondary-side resonant tank full bridge LLC

Rahman, Arief Noor; Chiu, Huang‐Jen; Hsieh, Yao‐Ching

doi:10.1109/igbsg.2018.8393557

Cited by 18 publications

(13 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to reduce the primary side loss affected by the large input current, some literature has tried to move the resonant tank or part of the resonant components from the primary side to the secondary side. Obvious efficiency improvements have been obtained, such as [24][25][26][27][28][29]. However, the rectifier diodes in [24][25][26][27][28] still suffer high-output voltage stress.…”

Section: Introductionmentioning

confidence: 99%

“…Obvious efficiency improvements have been obtained, such as [24][25][26][27][28][29]. However, the rectifier diodes in [24][25][26][27][28] still suffer high-output voltage stress. Besides, the converter proposed in [25] only transfers parts of the resonant elements, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…High step‐up converters have been widely developed in recent years and have been applied in many fields such as renewable energy applications (photovoltaic array, fuel cell stacks), automobile electrical systems, uninterruptible power systems, and electrostatic precipitator systems [1–34]. Under some conditions, galvanic isolation is necessary.…”

Section: Introductionmentioning

confidence: 99%

“…So the reverse‐recovery loss is still a big issue when the power level increases. A secondary side LLC is proposed in [27] to achieve high step‐up function. However, extra inductors or transformers must be introduced into the converter.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis and design of an isolated high step‐up converter based on the secondary side quasi‐resonant loops

Jia

Yuan

2020

IET Power Electronics

View full text Add to dashboard Cite

In a high step-up converter, the primary side input current contributes a significant share of total power loss. Meanwhile, high-voltage stresses of secondary side components are also big issues. This study proposes an isolated converter with secondary side quasi-resonant loops. The push-pull structure is adopted to reduce active switch numbers so the primary side power loss can be controlled in a very minor range. The newly added resonant loops on the secondary side significantly decrease the current stresses of the resonant capacitors, so the power loss caused by capacitor equivalent-series-resistance is reduced. The voltage stresses of diodes and capacitors on the secondary side are also decreased by an improved symmetricalvoltage-quadrupler-rectifier structure. The proposed converter is with the maximum voltage gain equal to 4 without consideration of the transformer. Therefore, it is helpful to decrease the transformer turns ratio. The operation process is analysed in detail and the design considerations are also summarised. Theoretical analysis is verified by the experimental results of a 400 W prototype with 34-40 V input and 380 V output.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis and design of an isolated high step‐up converter based on the secondary side quasi‐resonant loops

Jia

Yuan

2020

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…One of the most used topologies employed on PC stages is the LLC converter [20]. The soft-switching characteristics of the LLC resonant circuit allow decreasing switches power losses.…”

Section: Introductionmentioning

confidence: 99%

Single-Stage LED Driver with Dimming and Universal Input Voltage Capability

Daros

Cipriani

Menke

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

View full text Add to dashboard Cite

This paper presents a boost bridgeless totem-pole converter operating as power factor correction (PFC) stage integrated with a half-bridge LLC resonant converter as power control (PC) stage. The resultant single-stage converter yields in an effective integration, reducing the number of switches from 4 to 2 (50% reduction). This integrated topology aims decreasing conduction and commutation power losses and, moreover, achieving high power factor (PF), low total harmonic distortion (THD) and good efficiency. The converter is designed to have a fixed bus voltage, which is controlled by changing the half-bridge duty cycle under universal input voltage (UIV). However, since the HB duty cycle also affects the LLC converter due to their integration, a variable inductor is employed to control the LLC impedance and achieve a controlled output current and dimming capability, consequently a constant frequency operation is achieved. Simulation results are presented to verify the theorical analysis, through a 100 W LED luminaire. The results show voltage and current levels in the topology, as well as PF and THD levels in compliance with IEC 61000-3-2. Moreover, it is shown the feasibility of output current control capability through variable inductor even with HB duty cycle variation.

show abstract

Boost and full‐bridge integrated converter for wide input‐voltage range application

Yao

Liu

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary The output voltage of fuel and solar cells varies extensively and is often low. Thus, high step‐up DC‐DC converters in DC microgrid should be suitable for an extensive input‐voltage range application. However, the voltage stress of rectifier diodes is high in an extensive voltage range in voltage‐source converters. In addition, the input current of the converter should be continuous to obtain a high lifetime of fuel cell and to realize maximum power point tracking (MPPT) for the PV array. Output current of the converter should be continuous to use a film capacitor, which can improve the lifetime and reliability of the converter. Thus, a boost and full‐bridge integrated converter is proposed. Switches in the boost converter are shared with the full‐bridge converter to reduce the number of switches. Since transformer secondary to primary turns ratio is reduced compared to voltage‐source converters, voltage stress of rectifier diodes is low. As there are input and output inductors in the proposed converter, input and output currents are continuous. Operating principle is elaborated. Design guidelines and example are illustrated. The loss calculation of the proposed converter is given. Finally, simulation and experimental results confirm the theoretical analysis. The proposed converter can be used in the wide input‐voltage range application.

show abstract

Design of wide input voltage range high step-up DC-DC converter based on secondary-side resonant tank full bridge LLC

Cited by 18 publications

References 3 publications

Analysis and design of an isolated high step‐up converter based on the secondary side quasi‐resonant loops

Analysis and design of an isolated high step‐up converter based on the secondary side quasi‐resonant loops

Single-Stage LED Driver with Dimming and Universal Input Voltage Capability

Boost and full‐bridge integrated converter for wide input‐voltage range application

Contact Info

Product

Resources

About