Nonisolated Single-Phase Quadratic Switched-Boost Inverter With Continuous Input Current and Step-Up Inversion Capability

Zhu, Xiaoquan; Ye, Kaiwen; Jiang, Liming; Jin, Ke; Zhou, Weiyang; Zhang, Bo

doi:10.1109/jestie.2022.3214153

Cited by 9 publications

(7 citation statements)

References 33 publications

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“…However, the higher voltage gain of the proposed inverter facilitates the lower DC link voltage requirement, and thereby, the boost factor and the DC link voltage are relatively less than that of the inverters in the literature. 15,16,35 Therefore, the voltage and current stress of the switches are comparable with other contemporary inverters.…”

Section: Steady-state Analysis Of Proposed Invertermentioning

confidence: 83%

“…It can be noted that the switches (

D_{1}

S_{1}

S_{2}

S_{3}

, and

S_{5}

) of the proposed inverter tolerate voltage stress equal to capacitor voltage

V_{C}

and one switch

S_{4}

has voltage stress of

2 V_{C}

. However, the higher voltage gain of the proposed inverter facilitates the lower DC link voltage requirement, and thereby, the boost factor and the DC link voltage are relatively less than that of the inverters in the literature 15,16,35 . Therefore, the voltage and current stress of the switches are comparable with other contemporary inverters.…”

Section: Description Of the Proposed Invertermentioning

confidence: 85%

“…Table 2 shows that the inverters presented in previous works, 9,10 provide lower voltage gain, which leads to higher voltage stress across the capacitor and switches. The voltage gain of the inverters, 15,16 is slightly less than that of the proposed inverter, as shown in Figure 8A. While the inverters in the literature 14,19,36 provide higher voltage gain compared to the proposed inverter.…”

Section: Comparison Of the Proposed Inverter With The Contemporary Tr...mentioning

confidence: 87%

“…While the inverters in the literature 14,19,36 provide higher voltage gain compared to the proposed inverter. Regarding capacitor voltage stress, the inverters discussed in previous works 15,16 require a higher DC link voltage requirement across the passive and active elements, leading to higher voltage stress. Consequently, the total power loss increases.…”

Section: Comparative Analysis With Buck-boost Type Impedance Source I...mentioning

confidence: 99%

“…Later, the switched capacitor-based SBI is discussed in Nguyen et al, 11 where a switched capacitor cell increases the total voltage gain compared to SBI, and the voltage gain can be extendable by adding the switched capacitor cells. In previous works, [12][13][14][15][16] the active switch-based enhanced voltage gain SBI is discussed. These inverters reduce the DC link voltage requirement and facilitate the inverter to operate with a near unity modulation index.…”

mentioning

confidence: 99%

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A transformerless common ground‐based 1‐ϕ single‐stage switched boost inverter for solar photovoltaic applications

Rage,

Sahoo,

Thirumala

et al. 2023

Circuit Theory & Apps

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This paper proposes a transformerless common ground based single phase single‐stage switched boost inverter for solar photovoltaic (PV) applications. In the proposed inverter, the input DC source and output AC load share a common ground. As a result, the high‐frequency common mode voltage across the parasitic capacitance is eliminated, resulting in negligible leakage current ( ) and the associated power loss, and harmonics in the inverter. Moreover, the higher voltage gain of the inverter facilitates the inverter to operate with high modulation index and lower shoot through (ST) duty ratio. Hence, the DC link voltage requirement across the inverter leg is reduced. Consequently, the voltage stress across the switches is minimized. Here, a modified PWM control technique is adopted, where the dual active states of the proposed inverter reduce the inductor current ripple and make it suitable for solar PV applications. The voltage boosting capability of the proposed inverter is extendable with the help of an additional number of intermediate impedance sub‐networks. The detailed steady‐state analysis of the proposed inverter is verified with the help of MATLAB simulation. To verify the simulation results, a 200 W, 120 V, and 50 Hz experimental prototype is developed. The prototype is tested for unity and lagging power factor load conditions with a wide range of input DC voltages, and all the major results are included in the paper. The power and thermal loss analysis is carried out using PLECS software, and the results show that the inverter has a maximum efficiency of 97.48%. From the experimental results, it can be inferred that the proposed inverter has a higher modulation index, lesser inductor current ripple, and zero leakage current as compared to the contemporary inverters.

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Section: Steady-state Analysis Of Proposed Invertermentioning

confidence: 83%

“…It can be noted that the switches (

D_{1}

S_{1}

S_{2}

S_{3}

, and

S_{5}

) of the proposed inverter tolerate voltage stress equal to capacitor voltage

V_{C}

and one switch

S_{4}

has voltage stress of

2 V_{C}

Section: Description Of the Proposed Invertermentioning

confidence: 85%

Section: Comparison Of the Proposed Inverter With The Contemporary Tr...mentioning

confidence: 87%

Section: Comparative Analysis With Buck-boost Type Impedance Source I...mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

A transformerless common ground‐based 1‐ϕ single‐stage switched boost inverter for solar photovoltaic applications

Rage,

Sahoo,

Thirumala

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

An integrated common ground‐based grid‐connected current‐fed switched inverter

Ravitheja,

Sahoo,

Thirumala

2024

Circuit Theory & Apps

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A current‐fed switched inverter and its derivatives are gaining more attention in solar PV grid‐connected applications. In these inverters, the absence of galvanic isolation generates the leakage current, leading to the injection of harmonics and the degradation of solar PV panel life span. This paper proposes an integrated common ground‐based grid‐connected current‐fed switched inverter. The common ground between the input DC source and output AC grid eliminates the leakage current and makes the inverter immune to high‐frequency common‐mode voltage variations. It utilizes the shoot‐through state to boost the input DC voltage and obtain the rated AC output voltage. Moreover, as compared to the contemporary common ground‐based inverter topologies, the number of passive reactive elements and active switches is less. Thereby, the size, cost of the system, and associated power loss are reduced. The proposed inverter's continuous input current and buck–boost nature make it suitable for applications like solar PV systems. The steady‐state analysis of the proposed inverter is validated using the MATLAB Simulink tool, and furthermore, the simulation results during grid‐tied mode have been cross‐verified with the help of real‐time simulator OPAL‐RT. Further, the power loss and thermal loss analysis are carried out using the PLECS software. Finally, the performance of the inverter and simulation results are verified with the experimental results.

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A Single Source Quadruple Boost Nine-Level Switched-Capacitor Inverter With Reduced Components and Continuous Input Current

Kumar,

Raushan,

Chakraborty

2024

IEEE Access

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The multilevel inverter (MLI) serves as a pivotal class of power electronic converters, well-suited for high-power applications at medium voltage levels, ensuring superior power quality. While designing an MLI, there is a motif among the number of components, voltage stress on the semiconductor devices, and its voltage-boosting ability. A single source nine-level switched-capacitor based novel inverter with reduced components has been proposed in this paper. The proposed H-bridge based switched capacitor inverter topology employs nine switches, two capacitors, two diodes, and one DC source. The inverter has a quadruple voltage boost and the ability to draw continuous input current from the DC supply and self-voltage balance with a voltage ripple of less than 5%. A comprehensive study of performance parameters, design consideration, and loss analysis of the proposed inverter is also incorporated. A levelshifted pulse width modulation technique is implemented to operate the inverter for unity to 0.5 lagging load power factors and 1 − 0.2 modulation indices. The dynamic responses of the proposed switched capacitor inverter topology are obtained through MATLAB simulation for analysis and further validated by hardware prototype.

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Nonisolated Single-Phase Quadratic Switched-Boost Inverter With Continuous Input Current and Step-Up Inversion Capability

Cited by 9 publications

References 33 publications

A transformerless common ground‐based 1‐ϕ single‐stage switched boost inverter for solar photovoltaic applications

A transformerless common ground‐based 1‐ϕ single‐stage switched boost inverter for solar photovoltaic applications

An integrated common ground‐based grid‐connected current‐fed switched inverter

A Single Source Quadruple Boost Nine-Level Switched-Capacitor Inverter With Reduced Components and Continuous Input Current

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