A detailed analytical model of a solid state transformer

Yu, Ziwei; Husain, Iqbal

doi:10.1109/ecce.2015.7309761

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…The time-scales of SST different modes are within 10 −3 ms and 0.1 s [205]. Moreover, a comprehensive mathematical model of an SST including power stages and closed loop controllers is reported in [206]. This model can also be used for the general power system studies and implementation in real-time digital simulators [207].…”

Section: Sst Transient Performancementioning

confidence: 99%

Review of Solid-State Transformer Applications on Electric Vehicle DC Ultra-Fast Charging Station

2022

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The emergence of DC fast chargers for electric vehicle batteries (EVBs) has prompted the design of ad-hoc microgrids (MGs), in which the use of a solid-state transformer (SST) instead of a low-frequency service transformer can increase the efficiency and reduce the volume and weight of the MG electrical architecture. Mimicking a conventional gasoline station in terms of service duration and service simultaneity to several customers has led to the notion of ultra-fast chargers, in which the charging time is less than 10 min and the MG power is higher than 350 kW. This survey reviews the state-of-the-art of DC ultra-fast charging stations, SST transformers, and DC ultra-fast charging stations based on SST. Ultra-fast charging definition and its requirements are analyzed, and SST characteristics and applications together with the configuration of power electronic converters in SST-based ultra-fast charging stations are described. A new classification of topologies for DC SST-based ultra-fast charging stations is proposed considering input power, delta/wye connections, number of output ports, and power electronic converters. More than 250 published papers from the recent literature have been reviewed to identify the common understandings, practical implementation challenges, and research opportunities in the application of DC ultra-fast charging in EVs. In particular, the works published over the last three years about SST-based DC ultra-fast charging have been reviewed.

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Section: Sst Transient Performancementioning

confidence: 99%

Review of Solid-State Transformer Applications on Electric Vehicle DC Ultra-Fast Charging Station

2022

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“…Applications in transportation and smart grid can be found in [7]; whereas a topology based on SiC devices can be found in [8]. Also, a traditional transformer and an SST were compared in [9], and a procedure to obtain a detailed model of an SST topology can be found in [10]. A three-stage SST is considered in this paper [7].…”

Section: Introductionmentioning

confidence: 99%

Control of a three-stage medium voltage solid-state transformer

Busada¹,

Chiacchiarini²,

Jorge³

et al. 2017

Adv. sci. technol. eng. syst. j.

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Adaptive integral sliding mode controller for solid state transformer based on generalized averaged model andT‐Sfuzzy method

Sun

Wang

et al. 2021

Int Trans Electr Energ Syst

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The integrated converter between distributed renewable source and main grid has been widely applied. Although the independent control strategies regarding each submodule of solid state transformer (SST) have been studied, the integrated control based on overall model has not been proposed. To this end, this paper proposes an adaptive integral sliding mode control strategy based on T‐S fuzzy method for the single‐phase SST to regulate the output voltage and guide the power transmission. First, the overall state‐space model based on generalized average method is first built through quasi‐Fourier series. It can capture switching ripple compared with conventional model. Furthermore, the built model with uncertainties and nonlinear components is switched as the linear time invariant system through T‐S fuzzy method. Meanwhile, the system order can also be reduced, which reduces the complexity of the controller design. Based on this model, an integral sliding mode control approach with rapid dynamic response and strong robustness against perturbations or model uncertainties is proposed. Finally, several simulation and experimental results are provided to validate the performance of the proposed control approach.

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A detailed analytical model of a solid state transformer

Cited by 12 publications

References 8 publications

Review of Solid-State Transformer Applications on Electric Vehicle DC Ultra-Fast Charging Station

Review of Solid-State Transformer Applications on Electric Vehicle DC Ultra-Fast Charging Station

Control of a three-stage medium voltage solid-state transformer

Adaptive integral sliding mode controller for solid state transformer based on generalized averaged model andT‐Sfuzzy method

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