Modeling with Beat Frequency Dynamics and Phase-Frequency Control Design for a Dual-Bridge Series Resonant Converter

Chakraborty, Surja Sekhar; Hatua, Kamalesh

doi:10.1109/tie.2021.3109532

Cited by 18 publications

(2 citation statements)

References 28 publications

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“…The model in ( 21) -( 26) cannot produce accurate results since the inductor currents and capacitor voltages are AC variables. Therefore, a generalized average model (GAM) considering the fundamental component is preferred to model this converter, which has the similar concept with the extended describing function (EDF) model [37], [38]. Using this model, all variables are represented as Fourier series in the complex form:…”

Section: B Modeling Of Q-cllc Convertermentioning

confidence: 99%

Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers

Budiwicaksana,

Lee

2024

IEEE Open J. Ind. Electron. Soc.

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This paper proposes a novel submodule capacitor voltage balancing control for multiport modular multilevel converter (MMC)-based solid-state transformers (SSTs). To balance each submodule capacitor voltage, the balancing control is usually applied to the MMC. However, the low switching frequency operation and bulky arm inductance of the MMC limit the controller bandwidth and stability margin. These issues are addressed by moving the balancing control to the back-end DC/DC converter which is operated at high switching frequency. The controller gains are designed based on the small-signal model. The superiority of the proposed controller over the conventional one has been verified through Bode plot, pole-zero map, and Nyquist path analyses. Experimental results for a 2.4 kW prototype system have also verified the accuracy of the model and effectiveness of the proposed balancing control for step load changes.INDEX TERMS Balancing control, modeling, modular multilevel converters, solid-state transformer. FIGURE 1. Basic structure and application of a multiport SST.

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Section: B Modeling Of Q-cllc Convertermentioning

confidence: 99%

Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers

Budiwicaksana,

Lee

2024

IEEE Open J. Ind. Electron. Soc.

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“…In recent years, bidirectional DC/DC converters have been widely used in renewable energy power generation systems, electric vehicles, uninterruptible power supplies and other industrial applications [1][2][3][4]. The voltage of energy storage devices, such as batteries and super capacitors, is generally relatively low.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Soft Switching Conditions for Push-Pull Current Type Bidirectional DC/DC Converter

Meng,

Zhang,

Feng

et al. 2024

IEEE Access

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This article first introduces the working principle of a push-pull current type DC/DC converter, analyzes the transient working process of the converter within one working cycle of the control signal, and draws the relevant waveforms of the main parameters of the circuit; Secondly, equivalent circuits were established for each switch in the circuit to achieve soft switching. At the same time, due to the isolation of the DC/DC converter using parasitic parameters of the converter for resonance, the soft switching conditions of the switch were achieved. The main parameters of the resonance process were the parasitic capacitance of the switch and the transmission inductance of the converter. Therefore, based on the soft switching implementation process of each switch, the influence relationship between the parameter design of parasitic capacitance and transmission inductance on the soft switching is derived; Finally, the software simulation and prototype experimental platform were built to verify that the derived soft switching conditions can serve as the theoretical basis for the parameter design of push-pull current type DC/DC converters.

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Resonant Frequency Tracking Scheme for LLC Converter Based on Large and Small Signal Combined Model

Xue

Zhou

et al. 2023

IEEE Access

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Modeling with Beat Frequency Dynamics and Phase-Frequency Control Design for a Dual-Bridge Series Resonant Converter

Cited by 18 publications

References 28 publications

Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers

Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers

Analysis of Soft Switching Conditions for Push-Pull Current Type Bidirectional DC/DC Converter

Resonant Frequency Tracking Scheme for LLC Converter Based on Large and Small Signal Combined Model

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