A modified carrier-based PWM technique for minimization of leakage current in transformer less single-phase grid-tied PV system

Santra, Subhendu Bikash; Acharya, Anupam; Choudhury, Tanmoy Roy; Nayak, Byamakesh; Panigrahi, Chinmoy Kumar

doi:10.1007/s00202-020-01092-6

Cited by 10 publications

(2 citation statements)

References 32 publications

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“…On the other hand, nonisolated topology structures do not experience energy losses due to electromagnetic conversion. However, in photovoltaic full-bridge inverters, when performing unipolar modulation, common-mode currents are generated, leading to energy consumption [9].…”

Section: Introductionmentioning

confidence: 99%

An improved modulation method for low common-mode current non-isolated series simultaneous power supply dual-input inverters for new energy generation applications

Sun,

Jiang

2024

Electr Eng

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Multi-input power supply systems are mostly used in the field of combined power supply of multiple new energy sources, and multi-input inverters play an important role in multi-input power supply systems, but multi-input inverters have the problem of common mode currents. This paper proposes an improved modulation method for a non-isolated series simultaneous power supply type dual-input inverter with low common-mode current for new energy generation applications. The design of a simulation circuit based on the corresponding dual-input inverter shows that this type of inverter can suppress the commonmode current below 30mA and has the advantage of low switching stress, providing an effective single-stage inverter solution for the combined power supply of multiple new energy sources.

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Section: Introductionmentioning

confidence: 99%

An improved modulation method for low common-mode current non-isolated series simultaneous power supply dual-input inverters for new energy generation applications

Sun,

Jiang

2024

Electr Eng

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“…A modified carrier-based PWM technique is presented in the paper [5] to reduce the leakage current. The suggested modulation strategy is contrasted with the traditional technique and is simulated to verify the effect of the leakage current in a changed carrier dependent PWM.…”

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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A Comparative Harmonic Suppression Analysis of Single Phase Half Bridge Grid Connected Inverter in Rotatory Frame of Reference with Integral Control Strategy

Khalid

Mekhilef

Mubin

2022

Lecture Notes in Electrical Engineering

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A modified carrier-based PWM technique for minimization of leakage current in transformer less single-phase grid-tied PV system

Cited by 10 publications

References 32 publications

An improved modulation method for low common-mode current non-isolated series simultaneous power supply dual-input inverters for new energy generation applications

An improved modulation method for low common-mode current non-isolated series simultaneous power supply dual-input inverters for new energy generation applications

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

A Comparative Harmonic Suppression Analysis of Single Phase Half Bridge Grid Connected Inverter in Rotatory Frame of Reference with Integral Control Strategy

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