Comments on “An Efficient Partial Power Processing DC/DC Converter for Distributed PV Architectures”

Suntio, Teuvo; Kuperman, Alon

doi:10.1109/tpel.2014.2327018

Cited by 26 publications

(15 citation statements)

References 3 publications

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“…In terms of power losses, the switching losses are also considered. Based on parasitic elements, which are mentioned before and referring to Tables 1 and 2, the power losses of the inductors, diodes, switches, and transformer are given by (12), (13), (14), and(15) respectively. These equations are calculated based on switching duty cycle, D t .…”

Section: Voltage Gain Comparisonmentioning

confidence: 99%

“…With a small approximation, diodes, switches, and transformer current ripples are considered to be inductor current ripple. The inductors power losses value is based on their RMS current, which is calculated as follows, (12) where P L , I L 1 ,rms , I L 2 ,rms , and ∆i are the overall inductor's losses, L 1 and L 2 the average current and current ripple which can be obtained in (14), respectively. Also, diodes and switches power losses are calculated based their current RMS values, so…”

Section: Voltage Gain Comparisonmentioning

confidence: 99%

“…One recent technique that is giving rise to good results is based on partial power processing (PPP) [1,2]. The basic principle of this technique is based on providing part of the input power directly to the output, meanwhile the rest is processed by the converter [1][2][3][4][5][6][7][8][9][10][11][12][13]. The main advantage of this technique is to level down the power rating of the elements as less power is handled by the converter.…”

Section: Introductionmentioning

confidence: 99%

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A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating

et al. 2019

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Employing partial power processing (PPP) technique for quasi Z-source converter (QZSC) a new structure of the converter is presented. Using PPP technique although eliminates electrical insolation, but permits reducing voltage and current stress at the semiconductors, if compared with full power proposals. In this work, two PPP structures are discussed: A first one, similar to the basic topology, where the output voltage of the power converter is in series with the input voltage; and a second one, where the output is in series with the capacitor of the QZSC. This minor modification, which requires no extra elements, improves the power rating, voltage gain, and requires a lower transformation ratio. An experimental prototype of the proposed converter has been tested and the results are compared with other implementations, permitting to validate the theoretical analysis as well as the advantages that this proposal provides.

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Section: Voltage Gain Comparisonmentioning

confidence: 99%

Section: Voltage Gain Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating

et al. 2019

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“…Additionally, [13] concludes that a dual active bridge (DAB) topology implemented on a PPC architecture achieves a reduced electrical stress and efficiency improvement in comparison to its FPP counterpart. However, when it comes to implementing non-isolated topologies on PPC architectures, the authors of [10,14,15] show that using a buck-boost topology on a PPC architecture results in FPP rather than PPP.…”

Section: Introductionmentioning

confidence: 99%

Demystifying Non-Isolated DC–DC Topologies on Partial Power Processing Architectures

et al. 2022

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This paper discusses the possibility of achieving partial power processing with non-isolated DC–DC topologies. To this end, partial power converter architectures are seen as an interesting solution for reducing the power processed by the converter. We observed via simulations that single-inductor non-isolated topologies cannot achieve partial power processing since the obtained current and voltage waveforms were the same as those found in a full-power converter. However, when using double inductor non-isolated topologies, reduced current and improved efficiencies were achieved. In order to confirm the results obtained from the simulations, single- and double-inductor topologies were tested experimentally. Finally, it was concluded that a double-inductor non-isolated topology can improve its performance by using partial power processing.

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“…Em [9], por exemplo, os autores afirmam que a topologia utilizada como regulador série deve ser obrigatoriamente isolada para garantir o PPP, e utilizam a topologia flyback como regulador série. No entanto, em [5] é apresentado um sistema que utiliza a topologia não isolada buck-boost como regulador série afirmando se tratar de uma topologia que realiza o processamento parcial e energia, afirmação que é refutada em [8] Embora a potência ativa no regulador série seja menor do que em uma topologia convencional, a conexão série não é uma condição suficiente para garantir o PPP. Isso é demonstrado em [10], onde um estudo de caso do conversor buck-boost conectado como regulador série demonstrou apresentar um desempenho similar, em termos de processamento de energia e eficiência, à um conversor convencional que processa toda potência ativa.…”

Section: Introductionunclassified

Processamento Parcial De Energia Em Conversores CC-CC Conectados Na Configuração De Reguladores Série

Zientarski¹,

Martins²,

Pinheiro³

et al. 2017

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Resumo -Este trabalho apresenta um procedimento para avaliação do processamento parcial de energia em conversores CC-CC que operam como reguladores série. Por meio da análise da potência ativa e não-ativa, o procedimento permite distinguir quais topologias de conversores processam menor quantidade de energia e por isso podem ser consideradas topologias com processamento parcial de energia. Como estudo de caso, são abordadas as topologias originalmente isoladas flyback e forward conectadas como reguladores série, comprovando que o regulador série forward pode realizar o processamento parcial em uma faixa de ganho de tensão dependendo da relação de espiras utilizada no transformador, enquanto que o regulador série flyback processa a mesma quantidade de energia que um conversor convencional não isolado. São apresentados resultados experimentais de dois protótipos de 750 W para validar a abordagem proposta. Palavras-chave - PARTIAL POWER PROCESSING ON DC/DC CONVERTERS CONNECTED AS SERIES REGULATORSAbstract -This paper presents a procedure to evaluate the partial power processing on DC/DC converters with series regulators by analyzing the active and non-active power.This allows to distinguish what topologies performs, or not, the partial power processing. As a case study, the originally isolated flyback and forward topologies connected as series regulators are investigated, proving that the forward series regulator can perform partial power processing in a range of voltage gain depending on the transformer turns ratio, whereas the flyback series regulator processes the same amount of energy as a conventional non-isolated converter. In order to verify the proposed approach, experimental results of two 750 W prototypes are presented.

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Comments on “An Efficient Partial Power Processing DC/DC Converter for Distributed PV Architectures”

Cited by 26 publications

References 3 publications

A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating

A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating

Demystifying Non-Isolated DC–DC Topologies on Partial Power Processing Architectures

Processamento Parcial De Energia Em Conversores CC-CC Conectados Na Configuração De Reguladores Série

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