A New Single-Phase Single-Stage Switched-Capacitor based Seven-Level Inverter for Grid-Tied Photovoltaic Applications

Hemmati, Tala; Marangalu, Milad Ghavipanjeh; Kurdkandi, Naser Vosoughi; Husev, Oleksandr; Babaei, Ebrahim; Vinnikov, Dmitri; Sabahi, Mehran

doi:10.1109/rtucon53541.2021.9711706

Cited by 8 publications

(3 citation statements)

References 17 publications

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“…In the switched capacitor-based topologies, the basic idea involves redistributing charges among the capacitors in a way that ensures their voltages are balanced [11]- [13]. In the proposed grid-tied inverter, controlled switches connect and disconnect capacitors, allowing charges to flow between them.…”

Section: Proposed Seven-level Sc-based Invertermentioning

confidence: 99%

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A New High Step-Up SC-Based Grid-Tied Inverter With Limited Charging Spike for RES Applications

Marangalu,

Kurdkandi,

Monfared

et al. 2024

IEEE Open J. Power Electron.

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Switched capacitor multilevel inverter topologies are attractive among industrial power electronics researchers due to their applicability in sustainable energy systems such as renewable energy source (RES) applications. In this paper, a new switched capacitor (SC)-based grid-tied seven-level inverter is proposed for renewable energy sources (RES) applications. The proposed inverter can generate a seven-level output voltage waveform with voltage boosting ability and a gain factor of 3. Also, the proposed topology can provide the self voltage balancing for capacitors. The most important challenge of the SC-based topologies, i.e., the capacitor charging spike current, is solved by applying a soft charging circuit in the charging loop of the capacitors. The soft charging circuit consists of an inductor and a power diode in the capacitor charging path. Using a small size inductor in the soft charging circuit, the proposed inverter can limit the input current spikes. Comprehensive experiment results and comparisons are presented to verify the accurate performance of the proposed inverter.

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Section: Proposed Seven-level Sc-based Invertermentioning

confidence: 99%

“…In the switched capacitor topologies, by series-paralleling of capacitors with input dc power supply, the voltage boosting feature and capacitor voltage balancing can be obtained. [12,13]. Note that, in the switched capacitor topologies, the voltage boosting capability can be provided without using an extra boost stage.…”

Section: Introductionmentioning

confidence: 99%

A New High Step-Up SC-Based Grid-Tied Inverter With Limited Charging Spike for RES Applications

Marangalu,

Kurdkandi,

Monfared

et al. 2024

IEEE Open J. Power Electron.

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show abstract

“…Compared to other inverters, the SC-based MLIs can generate more voltage levels at the output and decrease the number of the needed DC supplies [36][37][38][39]. To obtain a higher number of produced output voltage levels with reduced circuit components, a new type of switched capacitor multilevel inverters have been presented in [40][41][42]. In these topologies a series-parallel switching method has been used so that these inverters can enhance the system flexibility by switching between several capacitors in series or parallel modes.…”

Section: Introductionmentioning

confidence: 99%

A new transformer‐less common grounded five‐level grid‐tied inverter with leakage current elimination and voltage boosting capability for photovoltaic applications

Kurdkandi

Marangalu

Alavi

et al. 2023

IET Renewable Power Gen

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Due to serious Concerns such as air pollution, global warming, and fossil fuels shortcoming, renewable energy sources such as photovoltaic applications are dramatically being integrated into the power generation systems all of the world. Here, a new switched‐capacitor‐based transformer‐less grid‐tied inverter has been proposed. By applying the series–parallel switching technique of the utilized switched‐capacitor module, the voltage boosting capability has been obtained. By implementing common ground technique, high overall efficiency and leakage current elimination capability have been obtained. Since the proposed inverter provides a multi‐level output voltage, the total harmonic distortion of the injected grid current is reduced. The introduced control strategy has been implemented to control both active and reactive powers and generate the switches pulses. Therefore, a high quality and adjusted current is injected to the grid. This inverter requires a single renewable energy source as input DC source. Here, the comprehensive description of the proposed inverter and its performance with design considerations have been presented. The proposed structure has been compared with several similar structures and the obtained results have been investigated. To evaluate the performance of the proposed inverter, a 620 W laboratory prototype is assembled and experimental results are analyzed.

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A New Single Source Five-Level Common Ground Switched Capacitor based Inverter

Hemmati

Husev

Babaei

et al. 2022

2022 IEEE 7th International Energy Conference (ENERGYCON)

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A New Single-Phase Single-Stage Switched-Capacitor based Seven-Level Inverter for Grid-Tied Photovoltaic Applications

Cited by 8 publications

References 17 publications

A New High Step-Up SC-Based Grid-Tied Inverter With Limited Charging Spike for RES Applications

A New High Step-Up SC-Based Grid-Tied Inverter With Limited Charging Spike for RES Applications

A new transformer‐less common grounded five‐level grid‐tied inverter with leakage current elimination and voltage boosting capability for photovoltaic applications

A New Single Source Five-Level Common Ground Switched Capacitor based Inverter

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