A Cascaded Generalized Integral Control for Multiobjective Grid-Connected Solar Energy Transfer System

Mukundan, C. M. Nirmal; Naqvi, Syed Bilal Qaiser; Singh, Yashi; Singh, Bhim; Jayaprakash, P.

doi:10.1109/tie.2020.3048316

Cited by 14 publications

(3 citation statements)

References 22 publications

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“…The DC-DC stage in standard PV converters is generally a boost converter or its variant [30]. Many commercial inverters use interleaving to increase power handling capability and to reduce the size of passive components [7].…”

Section: Introductionmentioning

confidence: 99%

Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters

Qamar,

Korada

et al. 2023

IEEE Open J. Power Electron.

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240 • -Clamped Space Vector PWM (240CPWM) is a lowest switching loss PWM method in cascaded architecture of DC-DC stage followed by DC-AC stage that reduces the switching loss by 85% in the DC-AC stage at unity power factor as compared to conventional space vector PWM (CSVPWM). 240CPWM requires unique six-pulse dynamically varying DC link voltage instead of constant DC link voltage which introduces low frequency harmonics predominantly around six times the fundamental frequency (6 f 1 ). These low frequency harmonics distort the input DC current and AC line currents. Moreover, they change the operating point of maximum power point tracking (MPPT), reducing the efficiency of grid-connected Photovoltaic (PV) converter. In this article, three topologies are proposed to reduce the low frequency ripple in input DC current and AC line currents in three-phase grid-connected PV systems with 240CPWM. A three-phase 1.5 kW Silicon Carbide based hardware prototype in grid-connected mode is developed to validate the performance of the proposed topologies. Experimental results show that the maximum reduction of 68.8% in (6 f 1 ) harmonic component in DC input current is achieved in active filter based Topology II without any significant detrimental effect on THD in AC line currents and inverter efficiency as compared to standard topology.INDEX TERMS Photovoltaic (PV), grid-connected converter, low frequency harmonics, DC input current, 240 • -Clamped Space Vector PWM (240CPWM), dynamic DC link, Total Harmonic Distortion (THD).

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Section: Introductionmentioning

confidence: 99%

Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters

Qamar,

Korada

et al. 2023

IEEE Open J. Power Electron.

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“…Some topologies were presented with reduction in the number of switches in symmetrical and asymmetrical configuration to achieve more levels in the output waveform 4‐9 . The grid‐connected applications for feeding real power and reactive power via the photovoltaic system in addition to the mitigation of harmonics were discussed using multilevel inverters 10‐13 . To suppress the harmonics produced by the multilevel inverter, many modulation schemes were introduced in the past few years.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8][9] The grid-connected applications for feeding real power and reactive power via the photovoltaic system in addition to the mitigation of harmonics were discussed using multilevel inverters. [10][11][12][13] To suppress the harmonics produced by the multilevel inverter, many modulation schemes were introduced in the past few years. Implementing a high switching frequency modulation technique for MLI damages the switches by thermal loss.…”

Section: Introductionmentioning

confidence: 99%

A novel control topology for grid‐integration with modular multilevel inverter

Vanaja¹,

Stonier²,

Moghassemi

2021

Int Trans Electr Energ Syst

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Summary This paper presents a novel control topology for a multilevel inverter with reduced number of power switches for achieving an increased number of levels in output voltage along with improved power quality. The diode clamped multilevel inverter configuration is modified and the gating signals are generated using selective harmonic optimization technique at fundamental frequency using Satin Bower Bird optimization (SBO). It enhances the quality of output voltage waveform with the reduction in total harmonic distortion (THD), less switching power losses, and better efficiency. The inverter is investigated for its competent operation capability on grid‐tied applications. Detailed simulation is conducted and results are presented for various load conditions. To validate the inverter operation, an experimental setup of the modified diode clamped modular inverter (MDCMI) interfacing the grid is presented. The loss analysis is carried out at the inverter and converter segments. Based on the analysis, the proposed control topology demonstrates the reliable and efficient operation of the modular inverter. From the results obtained it is evident that the proposed inverter design suits superlative for the grid applications.

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Enhancing Grid-Connected Hybrid Renewable Energy System with Super Lift Luo Converter for Improved Power Management and Reduced THD

Ganga Bhavani,

Bhanu Prasad,

Ravi Kishore

2024

J. Inst. Eng. India Ser. B

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A Cascaded Generalized Integral Control for Multiobjective Grid-Connected Solar Energy Transfer System

Cited by 14 publications

References 22 publications

Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters

Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters

A novel control topology for grid‐integration with modular multilevel inverter

Enhancing Grid-Connected Hybrid Renewable Energy System with Super Lift Luo Converter for Improved Power Management and Reduced THD

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