Robust Current Control of Grid-Tied Inverters for Renewable Energy Integration Under Non-Ideal Grid Conditions

Huang, Xin; Wang, Keyou; Fan, Bo; Yang, Qinmin; Li, Guojie; Xie, Da; Crow, M.L.

doi:10.1109/tste.2019.2895601

Cited by 30 publications

(13 citation statements)

References 43 publications

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“…This device converts the DC voltage produced by the PV panels to grid-compatible sinusoidal AC voltage output in order to synchronise with the grid. The grid-tie inverter monitors the grid supply characteristics, which are voltage and frequency, and adjusts the output accordingly to match the grid [9,10,14,18,21]. A grid-connected solar system works only if the grid is online, that is, if the grid shuts down, the system will no longer provide power supply.…”

Section: Grid-tie Invertermentioning

confidence: 99%

“…This system can be easily installed in existing home power networks to power appliances throughout the day. Compared to conventional stand-alone solar systems, the grid-tie delivers more power as the losses in charging, battery losses and inverting losses are eliminated [9][10][11]. Cost is also reduced hugely as maintenance is minimal due to the elimination of storage units.…”

Section: Introductionmentioning

confidence: 99%

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Adoption of Grid-Tie Solar System at Residential Scale

et al. 2019

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Traditionally, remote and urban communities worldwide have been supplied electricity almost completely by fossil fuel generators to accommodate for electricity needs. Currently, the integration of renewable energy sources (RESs) into the current power generation systems can offer attractive economic and environmental merits, including considerable fuel savings and carbon dioxide emission reductions. In relation to sustainability, efficiency and economic feasibility, solar photovoltaic (PV) is one of the most promising sources of RESs which is being touted as a leading solution to long-term electrification and development problems in rural and urban parts of Pacific Island Countries (PICs). In this work, a grid-tie PV system is instigated at a residential scale. The idea of this research is not to claim the power output from the PV system but to show the feasibility of a grid-tie system at a residential scale. This will help the PICs, non-profit organisations and the government better share scarce resources towards achieving their energy goals and be in line with Sustainable Development Goal (SDG) 7, ensuring access to affordable, reliable, sustainable and modern energy for all.

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Section: Grid-tie Invertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adoption of Grid-Tie Solar System at Residential Scale

et al. 2019

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“…This trend is a direct response to the global quest and search for sustainable and more environmental-friendly electrical power sources and utilizations. In this scenario, inverters/dc-ac converters are among the cardinal power electronics devices deployed in various key areas such as high-voltage direct-current (HVDC) transmission, [1,2], Flexible AC Transmission Systems (FACTS), [3,4], renewable energy grid integration, [5][6][7][8], railway and vehicle traction, [9][10][11], energy storage systems, [12], marine propulsion, [13], solar water pumping system, [14], grinding and rolling mills, [15], compressors and extruders, [16], to mention. Such deployment requires certain criteria to be met by the power electronics inverters of which high output voltage and a range of operational output power quality indices are crucial.…”

Section: Introductionmentioning

confidence: 99%

A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

2021

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Multiplicity of the triangular carrier signals is a criterion for the extension of sinusoidal pulsewidth modulation, SPWM, to a number of output voltage levels per phase-leg in cascaded H-bridge (CHB) multilevel inverter (MLI). Considering medium and high voltage applications where appreciable number of output voltage levels from CHB MLI is needed, commensurate high number of carrier signals in either classical level-or phase-shifted SPWM scheme for this inverter is inevitable. High-quality output waveforms from CHB MLI system demands precise synchronization of these multi-carrier signals. Sampling issues, memory constraints and computational delays pose difficulties in achieving this synchronization for real-time digital implementation. This study presents a PWM template for CHB MLI. The developed control concept generates adequate modulation templates for CHB inverter wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. These templates can be used on CHB inverter of any level with no further control modification. Nearly even distribution of switching pulses, equal sharing of the overall real power among the constituting power switches and enhanced output voltage quality were achieved with the proposed modulation. For a 3-phase, 7-level CHB, simulation and experimental results, for an R-L load, were presented. INDEX TERMS Cascaded H-bridge inverter, sinusoidal pulse-width modulation, total harmonic distortion.

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“…need to be connected to the grid through power electronics interfaces. However, the output current and voltage of these power electronics interfaces, which operate based on switching devices and Pulse Width Modulation (PWM), are highly pulsating and polluted with undesired harmonics [5]- [12].…”

Section: Introductionmentioning

confidence: 99%

Output Filter Design for Grid-Tied Cascaded Multi-Level Inverters Based on Novel Mathematical Expressions

2020

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Renewable energy resources, which are widely used in modern power systems, require power electronic-based converters to couple with the external grid. The main impact of utilizing power electronic converters on the grid power quality is harmonic generation produced by their switching process. Multilevel inverters are outstanding solutions to significantly reduce the voltage stress and harmonics. In this paper, novel mathematical expressions are derived to calculate the maximum ripple of the inverter output current, which are used to size the inverter-side inductor for an output filter. Moreover, new analytical and simplified formulas are proposed to calculate the damping losses, which lead to optimum selection of the damping resistor of the output filter. Ultimately, a mathematical expression for the grid-side inductor is attained considering compatibility level for harmonics within the range of 2-150 kHz to cover electrical and electronics equipment, which currently are the most important issues in the international standardization committee (IEC, TC77A). The efficiency of the proposed approach is finally validated by the experimental and simulation results. INDEX TERMS Cascaded multi-level inverter, current ripple, damping resistor, LCL filter, optimum damping, passive damping, pulse width modulation, renewable generation, resonance.

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Robust Current Control of Grid-Tied Inverters for Renewable Energy Integration Under Non-Ideal Grid Conditions

Cited by 30 publications

References 43 publications

Adoption of Grid-Tie Solar System at Residential Scale

Adoption of Grid-Tie Solar System at Residential Scale

A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

Output Filter Design for Grid-Tied Cascaded Multi-Level Inverters Based on Novel Mathematical Expressions

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