A New High Gain Transformerless Inverter for Single Phase Grid-connected Solar PV Application

Chamarthi, Phani Kumar; Moursi, Mohamed Shawky El; Hosani, Khalifa Al; Durra, Ahmed Al; Khadkikar, Vinod

doi:10.1109/icpes47639.2019.9105469

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…The converters introduced in [56,60,61] uses coupled inductors to acquire high boosting capability. However, this results in increased cost and size also.…”

Section: Boosting Vscgmentioning

confidence: 99%

“…Ref. [56] • High boosting gain can be acquired by controlling the turns ratio of the coupled inductor.…”

mentioning

confidence: 99%

“…Voltage-source common-grounded (CSCG) converters (boosting type). (a) Converter presented in the work of [54], (b) converter presented in the work of[55], (c) converter presented in the work of[56], (d) converter presented in the work of[57], (e) converter presented in the work of[58], the work of[59], (f) converter presented in the work of[60], (g) converter presented in the work of[61], (h) converter presented in the work of[62], (i) converter presented in the work of[63].…”

mentioning

confidence: 99%

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Common-Ground Photovoltaic Inverters for Leakage Current Mitigation: Comparative Review

et al. 2021

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In photovoltaic systems, parasitic capacitance is often formed between PV panels and the ground. Because of the switching nature of PV converters, a high-frequency voltage is usually generated over these parasitic capacitances; this, in turn, can result in a common-mode current known as leakage current. This current can badly reach a high value if a resonance circuit is excited through the PV’s parasitic capacitance and the converter’s inductive components. Transformers are usually used for leakage current mitigation. However, this decreases the efficiency and increases the cost, size, and weight of the PV systems. Number of strategies have been introduced to mitigate the leakage current in transformer-less converters. Among these strategies, using common-ground converters is considered the most effective solution as it offers a solid connection between the negative terminal of PV modules and the neutral of the grid side; thus, complete mitigation of the leakage current is achieved. Number of common-ground inverters have been recently presented. These inverters are different in their size, cost, boosting capability, the possibility of producing DC currents, and their capability to offer multilevel shaping of output voltage. This work introduces a comprehensive review and classification for various common-ground PV inverters. Therefore, a clear picture of the advantages and disadvantages of these inverters is clarified. This provides a useful indication for a trade-off between gaining some of the advantages and losing others in PV systems. In addition, the potentials for optimization based on different performance indicators are identified.

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“…The converters introduced in [56,60,61] uses coupled inductors to acquire high boosting capability. However, this results in increased cost and size also.…”

Section: Boosting Vscgmentioning

confidence: 99%

“…Ref. [56] • High boosting gain can be acquired by controlling the turns ratio of the coupled inductor.…”

mentioning

confidence: 99%