A New ZVS Full-Bridge DC–DC Converter for Battery Charging With Reduced Losses Over Full-Load Range

Kanamarlapudi, Venkata Ravi Kishore; Wang, Benfei; Kandasamy, Nandha Kumar; So, P.L.

doi:10.1109/tia.2017.2756031

Cited by 108 publications

(56 citation statements)

References 25 publications

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“…However, in the case of the phase-shift switching method, the ZVS operation is difficult at light loads, resulting in much efficiency degradation [7]. Both a PWM switching method and a phase-shift switching method have been applied to compensate for the disadvantages of each switching method [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Power Device Temperature-Balancing Control Method for a Phase-Shift Full-Bridge Converter

et al. 2020

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In this paper, a switching method is proposed for power device temperature-balancing in a phase-shift full-bridge (PSFB) converter. PSFB is commonly used for applications that require high efficiency, because a zero-voltage switching (ZVS) operation is possible on the primary-side. In PSFB, the circulation current complicates ZVS under a light-load condition, which generates heat. Meanwhile, the heat generated in PSFB creates a temperature deviation between the lagging leg and the leading leg, which shortens the lifetime of the power device, thereby reducing system reliability and efficiency. To solve this problem, previous studies applied a pulse-width modulation (PWM) switching method for light and medium loads, and a phase-shift switching method for the region where ZVS is possible. Although this method has the advantage of easy control, the maximum temperature of the legs of the PSFB increases with medium loads. In this paper, a temperature-balancing algorithm—a temperature-balance control—is proposed to decrease the leg temperature using switching based on position exchanges of the leading leg and lagging leg along with PWM switching. Temperature-balance control minimizes leg temperature deviation under light load conditions. The proposed control method provides a minimum temperature difference between the two legs and high efficiency.

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Section: Introductionmentioning

confidence: 99%

Power Device Temperature-Balancing Control Method for a Phase-Shift Full-Bridge Converter

et al. 2020

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“…Although SiC MOSFET already has good efficiency performance, to further reduce switching losses, several switching techniques have been proposed to achieve soft switching in the DC-DC converter [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. In these techniques, the semiconductor devices turn ON or OFF when the voltage is zero, presenting zero voltage switching (ZVS), or when the current is zero, presenting zero current switching (ZCS) [11][12][13]. Switching losses can be greatly reduced by ZVS and ZCS, which can be achieved by control strategies and resonant circuits.…”

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confidence: 99%

“…Energies 2020, 13,51 3 of 19 In order to further improve the efficiency of the LLC DC-DC converter, synchronous rectification (SR) is a popular method to reduce the secondary conduction loss [21][22][23]. The definition of SR is replacing the original secondary diode by low resistance switches and realizing the control of synchronous switching.…”

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confidence: 99%

“…Energies 2020,13, x; doi: FOR PEER REVIEW www.mdpi.com/journal/energies Synchronous rectification waveform. CH1: Secondary voltage, vcd, CH2: Upper SiC MOSFET Driving Signal, CH3: Under SiC MOSFET driving signal, and CH4: Secondary current, is.…”

mentioning

confidence: 99%

“…Energies 2020,13, x; doi: FOR PEER REVIEW www.mdpi.com/journal/energies Secondary voltage, vcd, CH3: Primary current, ir, and CH4: Secondary current, is. (b) CH1: Primary voltage, vab, CH2: Secondary voltage, vcd, CH3: Primary current, ir, and CH4: Secondary current, is.…”

mentioning

confidence: 99%

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Research on Digital Synchronous Rectification for a High-Efficiency DC-DC Converter in an Auxiliary Power Supply System of Magnetic Levitation

Zhao

2019

Energies

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In this paper, a new auxiliary power supply system of magnetic levitation based on the LLC DC-DC converter is proposed. The switches of the DC-DC converter are SiC MOSFET, which enables high frequency, high temperature, and high power density. For further improving the efficiency of the system and realizing the stability of the output voltage under different load conditions, the digital synchronous rectification (DSR) based on the phase shift control strategy is proposed. The prototype of the LLC DC-DC converter based on SiC MOSFET is implemented, which can realize zero voltage switching (ZVS) and zero current switching (ZCS). Then, the thermal image of DSR is presented, which proves that the power loss of SiC MOSFET with DSR is relatively low. Additionally, the system efficiency among the Si IGBT, SiC MOSFET, and SiC MOSFET with DSR is analyzed and the prototype demonstrates 98% peak efficiency. Finally, simulations, experiments, and data analysis prove the superiority of the proposed DSR strategy for the new auxiliary power supply system of magnetic levitation.

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Design of DC‐DC Converters for Electric Vehicle Wireless Charging Energy Storage System

Kripalakshmi

Deepa

2023

Power Converters, Drives and Controls for Sustainable Operations

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A New ZVS Full-Bridge DC–DC Converter for Battery Charging With Reduced Losses Over Full-Load Range

Cited by 108 publications

References 25 publications

Power Device Temperature-Balancing Control Method for a Phase-Shift Full-Bridge Converter

Power Device Temperature-Balancing Control Method for a Phase-Shift Full-Bridge Converter

Research on Digital Synchronous Rectification for a High-Efficiency DC-DC Converter in an Auxiliary Power Supply System of Magnetic Levitation

Design of DC‐DC Converters for Electric Vehicle Wireless Charging Energy Storage System

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