Multirate Digital Signal Processing and Noise Suppression for Dual Active Bridge DC–DC Converters in a Power Electronic Traction Transformer

Yang, Jingxi; Liu, Jianqiang; Zhang, Jiepin; Zhao, Nan; Wang, Yang; Zheng, Trillion Q.

doi:10.1109/tpel.2018.2803744

Cited by 36 publications

(11 citation statements)

References 22 publications

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“…The mechanism behind generating these noises and their impact on the DAB converter is To reduce the influence of these noises, the sampling frequency of the DAB converter must be different from the control frequency. To increase the performance and the dynamic behavior of power electronic traction transformer, the control frequency must be kept much higher when the sampling frequency of the DAB converter is higher than the switching frequency [48]. The IBDC converter can also be fed from multiple input sources for energy storage applications.…”

Section: Voltage-fed Non-resonant Ibdc Convertersmentioning

confidence: 99%

High frequency isolated bidirectional dual active bridge DC-DC converters and its application to distributed energy systems: an overview

Bathala

Kishan

Harischandrappa

2023

IJPEDS

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Among the DC-DC converters, an isolated bidirectional dual active bridge converter is a core circuit for high-frequency power converters in distributed energy system applications. These high-frequency power conversion systems attract academia and industry due to various advantages, such as high-power density, less weight, reduced noise, high efficiency, low cost and high reliability. First, the importance of power electronic converters in modern-day life is introduced. Second, a topological overview of voltage-fed and current-fed isolated bidirectional dual active bridge converters is presented with their importance in integrating hybrid power sources. Third, switching modes of isolated bidirectional DC-DC converters are also presented with a degree of freedom of control. Forth, performance evaluation of voltage-fed and current-fed isolated bidirectional converters has been presented with an example. Their suitability in integrating fuel cells and photovoltaics with energy storage systems in low to medium-power applications is presented.

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Section: Voltage-fed Non-resonant Ibdc Convertersmentioning

confidence: 99%

High frequency isolated bidirectional dual active bridge DC-DC converters and its application to distributed energy systems: an overview

Bathala

Kishan

Harischandrappa

2023

IJPEDS

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“…[6,19,22] describe the cautions of applying conventional control models and point out the importance of the accuracy of the sampling process to the control effect. In practice, a digital controller will generally apply a higher switching frequency to increase the power density of the converter, which causes undesirable noise from the large amounts of power consumed by the electronics devices in the converter [23][24][25]. As such, noise cannot be neglected and will impact the validity of the conventional control model by making digital control noise-sensitive.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, the steady-state performance of deadbeat control can be improved by applying additional filters in the sampling process [16,17]. In [25][26][27], several filter design methods are proposed for achieving noise suppression in DC/DC converters. Nevertheless, in addition to the poor compatibility of such filters under different application conditions, the use of filtering processes coupled with the inherent time delays [7,28] of digital systems will reduce the dynamic performance of the control system.…”

Section: Introductionmentioning

confidence: 99%

Predictive deadbeat average model control for phase‐shifted full‐bridge DC/DC converter

Zhu

Xiao

Ouyang

et al. 2022

IET Power Electronics

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Digital current control method is the mainstream method for high-power DC/DC converters. However, digital controllers require additional filters for noise suppression to ensure their proper operation in the complicated electromagnetic environment. The filtering processes coupled with the inherent time delays of digital systems significantly degrade dynamic performance. Thus, steady-state performance is improved at cost of dynamic performance in conventional current control. To solve the problems, this paper establishes a deadbeat average control model based on application of the oversampling technique for phase-shifted full-bridge (PS-FB) DC/DC converter and proposes a predictive deadbeat average model control method by incorporating predictive control into the proposed control model. Simulation and experimental results verify the effectiveness of the proposed control method in mitigating the contradiction between steady-state performance and dynamic performance in the digital system.

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“…The structure of PET in high-power and medium-voltage (MV) applications is usually based on the modular multilevel (ML) converters due to the advantages of modular structure [5,6]. In such PETs, the energy is usually transferred using dual-active H-bridges (DABs) and medium-/high-frequency transformers [7][8][9][10]. The active front converters used to construct the MV PETs witch are based on multilevel voltage-source inverter topology are usually modular multilevel converters (MMCs) [11,12] and cascade H-bridge (CHB) converters [10,13,14].…”

Section: Introductionmentioning

confidence: 99%

Structure and the space vector modulation for a medium‐voltage power‐electronic‐transformer based on two seven‐level cascade H‐bridge inverters

Lewicki

Morawiec

2019

IET Electric Power Applications

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This study presents the structure and the space vector pulse-width modulation (SVPWM) for power electronic transformer (PET) based on two seven-level cascade H-bridge (CHB) inverters. The DC links of CHB inverters are coupled with nine dual-active bridge (DAB) converters with medium-frequency transformers. The DC-link voltages are equalised with two methods-through the control of DAB voltages and through the modulation strategy applied to both CHB inverters. In the proposed SVPWM, the influence of vector sequences on predicted DC-link voltages is analysed, and the optimum vector sequence is selected to equalise them. Regardless of this, the proposed SVPWM strategy enables the proper generation of output voltage vector also in the case of DC-link voltage imbalance-the calculation of the space-vector area takes into consideration the inequality of the DC-link voltages and its influence on the lengths and positions of active vectors. To simplify the modulation algorithm, the multilevel CHB inverter is considered as a set of three-level inverters connected in series. Each of them is controlled using the same SVPWM algorithm. The proposed modulation method reuses the H-bridges with zero duty cycles determined in the initial stages of the output voltage generation process. This enables the optimal management of the DC-link voltage distribution. The experimental research was carried out on a 600 kW/3.3 kV PET. The results are presented in this study.

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Multirate Digital Signal Processing and Noise Suppression for Dual Active Bridge DC–DC Converters in a Power Electronic Traction Transformer

Cited by 36 publications

References 22 publications

High frequency isolated bidirectional dual active bridge DC-DC converters and its application to distributed energy systems: an overview

High frequency isolated bidirectional dual active bridge DC-DC converters and its application to distributed energy systems: an overview

Predictive deadbeat average model control for phase‐shifted full‐bridge DC/DC converter

Structure and the space vector modulation for a medium‐voltage power‐electronic‐transformer based on two seven‐level cascade H‐bridge inverters

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