A review and performance evaluation of control techniques in resonant converters

Youssef, Mohamed; Jain, Praveen

doi:10.1109/iecon.2004.1433312

Cited by 57 publications

(22 citation statements)

References 9 publications

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“…SPRC is allowed to operate in a wide load range, from full road to no load. SPRC has a varies of modulation strategies, including variable frequency control, phase-shift modulation control, self-sustained oscillation control (SSOC), self-sustained phase shift modulation control and optimized modulation (OM) [1]. In those strategies, OM achieves zero-current switching in one full bridge leg and zero-voltage switching in another, as shown in Fig.1 (b).…”

Section: Introductionmentioning

confidence: 98%

Half-cycle sampled discrete model of series-parallel resonant converter with optimized modulation

Jiang

Cao

Fröhleke

et al. 2014

2014 16th European Conference on Power Electronics and Applications

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Because of low switching losses and wide operation range, series-parallel resonant converter with optimized modulation is attractive. There are three major modeling methods for resonant converters, including approximation method, extended describing function method, and sampled-data method. Approximation method and extended describing function method are simple but relatively inaccurate on heavy load conditions. Sampled-data method requires many computation resources which limits the utilization in control algorithm. A low computational cost and relatively accurate model, half-cycle sampled discrete model is proposed in this contribution. The model describes the behavior of converters with slow-varying variable and assumes variables constant in every half cycle. The model is verified by circuit simulation and experiments.

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Section: Introductionmentioning

confidence: 98%

Half-cycle sampled discrete model of series-parallel resonant converter with optimized modulation

Jiang

Cao

Fröhleke

et al. 2014

2014 16th European Conference on Power Electronics and Applications

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“…In addition to that other control techniques have been described e.g. the Asymmetrical Clamped Mode Control (ACM) [1,2,5] which is a combination of ADC and PSC. However these control methods suffer from the disadvantage that ZVS/ZCS of the semiconductor switches is not guaranteed necessarily.…”

Section: Introductionmentioning

confidence: 99%

“…It ensures ZVS operation by varying the switching frequency. A similar technique called self-sustained oscillation controller (SSOC) is described in [2]. It consists of an inner current control loop that adjusts the phase shift between the resonant current and the inverter output voltage and an outer voltage control loop that adjusts the output voltage according to the reference value.…”

Section: Introductionmentioning

confidence: 99%

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Load dependent power control in series-series compensated electric vehicle inductive power transfer systems

Petersen¹,

Fuchs²

2014

2014 16th European Conference on Power Electronics and Applications

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In inductive battery charging systems for electric vehicles the power flow to the battery has to be controlled according to the battery state of charge (SOC), the magnetic coupling between primary and secondary side and other operation parameters. It is well known that the output power can be controlled by fixed frequency or variable frequency techniques applied to the high-frequency inverter (HFI). Furthermore an additional DC/DC converter can be used to adjust the input voltage of the HFI. These three techniques are analyzed and compared by theory and laboratory measurement. It results in using an additional DC/DC converter is the best option with the best efficiency at full load. Nevertheless this technique has the highest component count and therefore the highest costs. Another technique is Asymmetric Dutycycle Control (ADC) which reaches the second best efficiency. In contrast to DC/DC converter control there is no need for additional components making this technique a good choice. Furthermore this analysis reveals that Symmetric Dutycycle Control (SDC) and Phase Shift Control (PSC) as well as Variable Frequency Control (VFC) techniques cannot compete in terms of efficiency.

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“…Another method of control that can be applied to bridge converters at fixed frequency is phase-shift control [16][17][18]. In this method, multiple inverter legs are phase-shifted from each other to counteract variations in input voltage and maintain output power.…”

Section: B Phase-shift Controlmentioning

confidence: 99%

Impedance control network resonant step-down DC-DC converter architecture

Gunter

Afridi

Otten

et al. 2015

2015 IEEE Energy Conversion Congress and Exposition (ECCE)

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Abstract-In this paper, we introduce a step-down resonant dc-dc converter architecture based on the newly-proposed concept of an Impedance Control Network (ICN). The ICN architecture is designed to provide zero-voltage and near-zerocurrent switching of the power devices, and the proposed approach further uses inverter stacking techniques to reduce the voltages of individual devices. The proposed architecture is suitable for large-step-down, wide-input-range applications such as dc-dc converters for dc distribution in data centers. We demonstrate a first-generation prototype ICN resonant dc-dc converter that can deliver 330 W from a wide input voltage range of 260 V -410 V to an output voltage of 12 V.

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A review and performance evaluation of control techniques in resonant converters

Cited by 57 publications

References 9 publications

Half-cycle sampled discrete model of series-parallel resonant converter with optimized modulation

Half-cycle sampled discrete model of series-parallel resonant converter with optimized modulation

Load dependent power control in series-series compensated electric vehicle inductive power transfer systems

Impedance control network resonant step-down DC-DC converter architecture

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