Modelling a Stand-Alone Inverter and Comparing the Power Quality of the National Grid with Off-Grid System

Algaddafi, Ali; Brown, Neil; Gammon, Rupert; Alshahrani, Jubran

doi:10.5573/ieiespc.2016.5.1.35

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…But the inductor current is more expensive and may not reduce the output voltage ripple, hence the capacitor current in the output capacitor was used as proposed by Algaddafi et al [26].…”

Section: Critical Review Previous Studies Of the Stand-alone Invertermentioning

confidence: 99%

Stand-alone Inverter: Reviews, Models and Tests the exist system in Term of the Power Quality, and Suggestions to Design it

Algaddafi¹

2016

Adv. sci. technol. eng. syst. j.

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Developments in power electronics have enabled the widespread application of Pulse Width Modulation (PWM) inverters, notably for obtaining electricity from renewable systems. This paper critical review the previous studies in designing stand-alone inverter and modelling the inverter with two control loops to improve and provide a high-quality power of a stand-alone inverter. Multi-loop control techniques for a stand-alone inverter are utilised as the first loop is a capacitor current control to provide active damping and improve transient and steady state inverter performance. The capacitor current control is cheaper than inductor current control, where a small current sensing resistor is used. The second loop is the output voltage control that is used to improve the system performance and also control the output voltage. The power quality of the off-grid system is measured experimentally and compared with the grid power, showing power quality of off-grid system to be better than that of the grid. The suggestions and key findings to design the stand-alone inverter are given based in the reviewing of previous publications and from the literature's point of view.

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“…But the inductor current is more expensive and may not reduce the output voltage ripple, hence the capacitor current in the output capacitor was used as proposed by Algaddafi et al [26].…”

Section: Critical Review Previous Studies Of the Stand-alone Invertermentioning

confidence: 99%

Stand-alone Inverter: Reviews, Models and Tests the exist system in Term of the Power Quality, and Suggestions to Design it

Algaddafi¹

2016

Adv. sci. technol. eng. syst. j.

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“…The grid-connected inverter or stand-alone inverter require an additional control load such as a capacitor current loop with the output voltage control, as presented by Al Gaddafi et al [23]. The AC Mini-Grid system is proposed as an optimal solar PV system that can operate in the grid-connected system and stand-alone system.…”

Section: Proposed Systemmentioning

confidence: 99%

Review: Grid-Connected Inverter with Its Filter and Providing Suggestions for Designing a Transformerless Inverter

Algaddafi¹,

Khoja²

2016

IJOEE

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The grid-connected inverter is the interconnect between a renewable energy source such as the wind and solar power and the grid. There are two types of the gridconnected inverter based on the transformer. These are called the transformerless inverter and isolated inverter. The former is a smaller size and weight; however, the one limitation of this inverter is a leakage current problem. The latter has the advantage of being applicable in isolated locations, but it suffers from high cost and significant weight. In general, the grid-connected inverter has required a filter to mitigate the harmonic components and produce a perfect sinusoidal waveform. But this filter should be properly selected, whether the L filter or LCL filter. This paper reviews the previous studies on the grid-connected inverter and highlights the limitations from the literature's point of view. Finally, suggestions and recommendations for designing the filter and an optimal control for the gridconnected inverter are presented with extensive and indepth detail.  Index Terms-grid-connected inverter, integration of energy storage systems, Maximum Power Point Tracking (MPPT) II. GRID-CONNECTED INVERTER WITH LCL FILTER In this section, previous studies on the grid-connected inverter so far are reviewed and the limitations presented.

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Local Energy Supply Possibilities—Islanding Microgrid Case Study

et al. 2018

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Modelling a Stand-Alone Inverter and Comparing the Power Quality of the National Grid with Off-Grid System

Cited by 5 publications

References 11 publications

Stand-alone Inverter: Reviews, Models and Tests the exist system in Term of the Power Quality, and Suggestions to Design it

Stand-alone Inverter: Reviews, Models and Tests the exist system in Term of the Power Quality, and Suggestions to Design it

Review: Grid-Connected Inverter with Its Filter and Providing Suggestions for Designing a Transformerless Inverter

Local Energy Supply Possibilities—Islanding Microgrid Case Study

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