Novel Single-Stage Transformer-less Cascaded Differential Boost Single-Phase PV Inverter for Grid-Tied Applications

Babu, Sambhani Madhu; Veeramallu, V K Satyakar; Narasimharaju, B. L.; Rathore, Akshay Kumar; Krishnamoorthy, Harish S.

doi:10.1109/pesgre45664.2020.9070562

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Some other similar differential structures are found in references [14][15][16][17]. Although, in most differential structures, the boost converter has been used with some slight changes; in some studies, such as reference [18], the differential inverter was obtained by cascading a boost converters and a buck-boost converter. In this converter, the output voltage is obtained from the voltage differential of the two converters.…”

Section: Differential Connectionmentioning

confidence: 99%

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

2022

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Single-stage buck–boost inverters have attracted the attention of many researchers, due to their ability to increase/decrease the output voltage in one power conversion stage. One of the most important uses of these inverters is in photovoltaic applications, where the voltage of the solar panels varies in a wide range. In recent years, many new inverters have been proposed to improve the performance of existing structures. In this paper, the state of the art of these single-stage buck–boost inverters is discussed. The advantages and disadvantages of each structure are examined from different perspectives, such as the number of components, losses, and performance. Finally, in a general comparison, the properties of all structures are discussed and summarized in a table.

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Section: Differential Connectionmentioning

confidence: 99%

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

2022

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“…Step 3: Find maximum current ripple The maximum ripple current is found by using Ri and is given by Eq. (10). Step 4: Find inverter side impedance L1 For designing the converter side inductance L1, the ripple content in the output current needs to be taken care of.…”

Section: B Steps To Find Lcl Filter Component Valuesmentioning

confidence: 99%

“…To profile the output current and prevent sudden changes in the common-mode voltage, a hybrid PWM technique is taken into action, and a nonlinear output inductor is used to diminish the current ripple. In [10] novel single-stage transformer-less cascaded differential boost single-phase photovoltaic inverter for grid-tied applications is mentioned. In this paper, by cascading a two-switch boost converter and a four-switch buck-boost converter with two switches shared, a single-stage transformer-less inverter is recommended, which removes the need for an output filter and thereby reduces the part count.…”

Section: Introductionmentioning

confidence: 99%

H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application

Geetha

Sreenivasappa

2021

IJRER

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The majority of companies are shifting to renewable energy sources as non-renewable fuels are increasingly depleting. Solar energy is a dependable form of green energy. The solar energy after converting to AC through an inverter it is possible to inject into the grid to support distributed power generation system. Transformerless grid-tied inverters have become popular due to their lightweight and reduced cost. The leakage current does exist in this kind of inverter that deteriorate the performance of the inverter. This paper presents a novel H5-ZVR, H5-ZVRD and H5-ZVRS topologies to address the leakage current issue. These inverters take the benefit of hybrid technology, where H5 inverters are integrated with HB-ZVR topologies. To operate the inverter at its highest performance an appropriate hybrid pulse width modulation is also presented. The inverters are simulated in MATLAB to verify the operation and it is found that the leakage current of the inverters is considerably reduced as compared to HB-ZVR topologies. The leakage current of H5-ZVR, H5-ZVRD and H5-ZVRS are found to be 10 mA, 7.3 mA and 7.3 mA respectively and THD of these modules are 1.03%, 0.91% and 0.91% respectively. Also, the topologies present good common mode and differential mode characteristics.

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Implementation of Five Level Multilevel Inverter with Reduced Leakage Current

Geetha¹

2022

2022 IEEE International Conference on Distributed Computing and Electrical Circuits and Electronics (ICDCECE)

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Novel Single-Stage Transformer-less Cascaded Differential Boost Single-Phase PV Inverter for Grid-Tied Applications

Cited by 3 publications

References 11 publications

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application

Implementation of Five Level Multilevel Inverter with Reduced Leakage Current

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