Two-Stage Isolated Bidirectional DC–AC Converters With Three-Port Converters and Two DC Buses

Wu, Hongfei; Jia, Yihang; Yang, Fan; Zhu, Linsheng; Xing, Yan

doi:10.1109/jestpe.2019.2936145

Cited by 45 publications

(13 citation statements)

References 24 publications

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“…A method for deriving non‐isolated TPC from primary converters for multiple input/output is presented in reference [6]. Isolated TPCs with two DC buses and an AC port at the output are demonstrated in references [7] and [8]. A coupled inductor based high gain converter with a soft switching feature is presented in reference [9] and a TPC is presented in reference [10].…”

Section: Introductionmentioning

confidence: 99%

A non‐isolated bidirectional high gain integrated multiport converter for grid tied solar PV fed telecom load

Sheeja

Kalpana

Singh

et al. 2022

IET Power Electronics

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A multiport converter (MPC) with a non-isolated high gain bidirectional port is proposed for the grid integration of solar photovoltaic array (SPA) fed telecommunication load. The SPA along with a battery energy storage (BES) meets the power demand of the telecom DC load and the excess/deficit power is exchanged with AC grid. The MPC feeds the DC link of a voltage source converter for bidirectional operation with the AC grid. The small signal analysis of the converter shows that its operation is stable. The SPA, BES, and telecommunication load are rated for lower voltages, consecutively reducing the complexity with series-connected SPA. The proposed MPC possesses the merits of high voltage gain, reduced inductor size, and reduced number of components. Moreover, a power flow management algorithm is devised for the proposed converter that regulates the DC voltage at the telecom load and ensures smooth power flow control among various ports. The MPC is able to operate at various modes by controlling the ports independently. The converter performance during steady state and dynamic operating conditions under various modes are analyzed with detailed simulation studies. An experimental prototype is developed and test results are demonstrated to prove the viability of the designed converter.

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Section: Introductionmentioning

confidence: 99%

A non‐isolated bidirectional high gain integrated multiport converter for grid tied solar PV fed telecom load

Sheeja

Kalpana

Singh

et al. 2022

IET Power Electronics

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“…Bu bağlamda, bazı çalışmalar YFT'nin birincil tarafında bağlantı noktası artışını ele alırken bazıları ise YFT'nin ikincil tarafında bağlantı noktası artışı üzerine odaklanmıştır. [28] çalışmasında, ikincil taraf tam köprü doğrultucu iki DA çıkış portu elde etmek için ortak bir toprak ve farklı pozitif terminaller ile iki ayrı anahtarlama koluna bölünmüştür. Azaltılmış anahtarlama yapısına sahip entegre dönüştürücüler içerisinde interleaved yapılar ön plana çıkmaktadır.…”

Section: Introductionunclassified

Analysis of a New Interleaved-Based Multi-Port Isolated DC-DC Converter for Photovoltaic Panel and Battery Integrated Systems

Savrun

Atay

2021

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Bu çalışmada, fotovoltaik (FV) panel ile çalışan ve batarya destekli sistemler için etkin bir kontrol yapısına sahip interleaved tabanlı çift yönlü çok portlu izole yeni bir DA-DA dönüştürücü önerilmektedir. Önerilen dönüştürücü, üretim/depolama/yük birimleri arasındaki optimum güç akışını denetlemek için tasarlanmıştır. Tasarlanan sistemde, FV panel ve batarya arası güç transferi interleaved DA-DA dönüştürücünün sol kol anahtarlarının kontrolü ile sağlanırken, enerji üretim/depolama birimleri ile yükler arası güç transferi ilgili devrenin sağ kol anahtarlarının kontrolü ile sağlanmaktadır. Yük tarafının izolasyonunu sağlayan yüksek frekans transformatörünün (YFT) ikincil tarafında bulunan iki yarım köprü devresi ile birbirinden bağımsız kontrol edilebilen ve farklı gerilim seviyelerine sahip iki port oluşturulmaktadır. Önerilen dönüştürücüde portlar arasındaki güç akışı kontrol döngüleri arasında yumuşak geçiş yapabilen çok döngülü bir kontrol şeması tarafından gerçekleştirilmektedir. Önerilen çok portlu dönüştürücünün uygulanabilirliğini ve etkinliğini doğrulamak için, PSIM programında simülasyon çalışmaları gerçekleştirilmiştir. Önerilen dönüştürücünün performansı farklı ışınım ve yüklenme durumları gibi dinamik koşullar altında analiz edilmiştir. Güç akış yetenekleri ve yüksek verimlilik değerleri (>%98) önerilen dönüştürücünün uygulanabilirliğini ve etkinliğini doğrulamaktadır.

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“…In such systems, the main challenges are mostly associated with providing voltage step-up from a low-voltage energy source, like a battery or to provide galvanic isolation as a safety measure, such as required in EV charging. Typically, to achieve demanded functionality, a two-stage power electronic system is used (Figure 1a) [29][30][31][32][33]. Variable input DC voltage is first stabilized at a DC-link capacitor by a DC-DC converter that often features a high-frequency (HF) transformer (HFT) for both voltages matching and the galvanic isolation.…”

Section: Introductionmentioning

confidence: 99%

“…It is then followed by an inverter stage that converts the stabilized DC voltage of the appropriate level into the AC voltage. These systems offer a good regulation range and are widely used in practical applications [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Review of Isolated Matrix Inverters: Topologies, Modulation Methods and Applications

et al. 2020

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This paper presents a review of isolated matrix inverters. The study contributes to creating a point of reference for a comprehensive classification of existing solutions. Over 30 topologies were reviewed, and the main advantages and disadvantages discussed. Applications of isolated matrix inverters are summarized in a tabular form to demonstrate their flexibility for different power and voltage levels achieved due to the presence of a transformer. These inverters have been proposed for the uninterruptible power supplies, high and low-voltage/power photovoltaic systems, low-power fuel cell, different low- and high-voltage battery and/or electric vehicle chargers, audio amplifiers. The fully controlled switches on both terminals of these converters typically can provide the bidirectional power transfer capability, which is also addressed for most of the topologies, but requires some modification in their modulation strategy. Average efficiency of today’s isolated matrix inverters is comparable with the two-stage power converters; however, they can provide higher reliability and lower cost.

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Two-Stage Isolated Bidirectional DC–AC Converters With Three-Port Converters and Two DC Buses

Cited by 45 publications

References 24 publications

A non‐isolated bidirectional high gain integrated multiport converter for grid tied solar PV fed telecom load

A non‐isolated bidirectional high gain integrated multiport converter for grid tied solar PV fed telecom load

Analysis of a New Interleaved-Based Multi-Port Isolated DC-DC Converter for Photovoltaic Panel and Battery Integrated Systems

Review of Isolated Matrix Inverters: Topologies, Modulation Methods and Applications

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