Steady-state analysis of the constant-frequency clamped series resonant converter

Glaser, John; Witulski, A.F.; Myers, R.G.

doi:10.1109/7.250414

Cited by 12 publications

(6 citation statements)

References 6 publications

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“…However, these converters suffer from high switching losses due to hard switching. Hence, HF resonant DC-DC converters are used to reduce the switching losses, electromagnetic interference (EMI) and increase the power density and efficiency [1][2][3][4][5][6]. The basic two-element resonant DC-DC converter topologies are the series resonant converters (SRCs) and parallel resonant converters (PRCs).…”

Section: Introductionmentioning

confidence: 99%

“…The basic two-element resonant DC-DC converter topologies are the series resonant converters (SRCs) and parallel resonant converters (PRCs). The SRC provides good efficiency but the regulation of voltage at the light load is difficult and is not possible at no-load conditions [1][2][3][4][6][7][8]. However, PRC provides better voltage regulation but suffers from poor efficiency at light load [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Performance evaluation of high‐frequency CLL resonant DC–DC converter operated with phase‐shift and modified PWM gating scheme: analysis, design and implementation

Patil

Harischandrappa

2020

IET Power Electronics

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Normal phase-shift and modified pulse-width modulation gating schemes are proposed for a full bridge highfrequency capacitor-inductor-inductor (CLL) resonant DC-DC converter, and its performance is analysed in this study. Detailed modelling and the steady-state analysis of the converter are performed by using the fundamental harmonic approximation approach. Various modes of the converter operation with both the gating schemes are described and examined in detail. Zerovoltage switching of all the main switches is achieved by designing the resonant converter to operate in the above resonance mode. The optimum design of the converter is illustrated with the help of a flowchart and design curves. PSIM simulation is carried out and the experimental prototype is built to substantiate theoretical performance predictions. The simulation and experimental results are presented and compared.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance evaluation of high‐frequency CLL resonant DC–DC converter operated with phase‐shift and modified PWM gating scheme: analysis, design and implementation

Patil

Harischandrappa

2020

IET Power Electronics

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“…Efforts have been made to address the variable frequency drawback of the resonant converter. Constant frequency resonant converter has been described in [3]- [5]. In [3], ZCS switching occurs instead of ZVS and the load range for that is limited.…”

Section: Introductionmentioning

confidence: 99%

“…Constant frequency resonant converter has been described in [3]- [5]. In [3], ZCS switching occurs instead of ZVS and the load range for that is limited. In [4], ZVS is used here but also with limited load range.…”

Section: Introductionmentioning

confidence: 99%

A DC-DC Full-Bridge Hybrid Series Resonant Converter enabling constant switching frequency across wide load range

Ting

Haan

Ferreira

2012

Proceedings of the 7th International Power Electronics and Motion Control Conference

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This paper describes a DC-DC Full-Bridge Hybrid Series Resonant Converter (FB-HSRC) that enables constant switching frequency across a wide load range. Compared to most resonant converters, this converter has the advantage of constant frequency operation while maintaining ZVS on and off. Power is controlled with pulse width instead of frequency modulation. This enables filters to be optimised at the constant switching frequency instead of at the worst-case frequency hence reducing the sizes of the passive components in the converter. The FB-HSRC is topologically similar to the Partial Series Resonant Converter (PSRC) [6] but with two additional switches connected in parallel to each of its resonant capacitors in its switchless phase arm. At minimum load, the converter behaves like the PSRC with its resonant capacitors and series inductor contributing to power transfer. As load increases, these resonant capacitors also concurrently serve as ZVS turn off commutation capacitors for the switches during the resonant phase. Voltage and current waveforms are simulated with steady-state models of the operation modes. The converter efficiencies at various loads are calculated with the loss model obtained. Finally, a converter prototype is built for an output load range of 13 W to 100 W operating at a frequency of 100 kHz. Experimental results are obtained and are then compared against the simulations results and efficiency calculations.

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“…Therefore, fixed-frequency control methods need to be used. Clamped-mode (CM) or phase-shift pulsewidth modulation (PSPWM) control [15]- [18], and asymmetrical duty cycle (ADC) or asymmetrical PWM control [19]- [22] are the two common fixed-frequency PWM control strategies. The CM control can be applied only with the full-bridge converter whereas ADC control can be used with half-bridge as well as full-bridge converters.…”

mentioning

confidence: 99%

Characteristics and Design of an Asymmetrical Duty-Cycle-Controlled LCL-T Resonant Converter

Borage

Nagesh

Bhatia

et al. 2009

IEEE Trans. Power Electron.

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The characteristics of an asymmetrical duty cycle (ADC) controlled LCL-T resonant converter operating at the resonant frequency are studied by solving the state-space model of the converter. Four operating modes are identified having different circuit waveforms representing different device conduction sequences, thereby creating different conditions during the device switching. The mode boundaries are obtained and plotted on the D-Q plane. A region on the D-Q plane is identified for the converter design, where the switches operate under zero-voltage-switching condition. A prototype 500 W, 100 kHz converter is designed and built to experimentally demonstrate the operating modes, control characteristics, and performance of ADC-controlled LCL-T resonant converter. Index Terms-Current supplies, dc-dc power conversion, pulsewidth modulation (PWM), resonant power conversion.

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Steady-state analysis of the constant-frequency clamped series resonant converter

Cited by 12 publications

References 6 publications

Performance evaluation of high‐frequency CLL resonant DC–DC converter operated with phase‐shift and modified PWM gating scheme: analysis, design and implementation

Performance evaluation of high‐frequency CLL resonant DC–DC converter operated with phase‐shift and modified PWM gating scheme: analysis, design and implementation

A DC-DC Full-Bridge Hybrid Series Resonant Converter enabling constant switching frequency across wide load range

Characteristics and Design of an Asymmetrical Duty-Cycle-Controlled LCL-T Resonant Converter

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