Small-Signal Modelling and Design Validation of PV-Controllers With INC-MPPT Using CHIL

Pokharel, Mandip; Ghosh, Avishek; Ho, Carl Ngai Man

doi:10.1109/tec.2018.2874563

Cited by 30 publications

(18 citation statements)

References 25 publications

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“…It is noted that for a constant irradiance level G and temperature T, an increase in the number of PV panels in series N s leads to an increase in the voltage of the PV panel v pv , while the same is true for the number of PV panels in parallel N p and the current of the PV panel i pv . This I-V plot of a PV panel is expressed as [2,4,25]:…”

Section: Model Of the Pv Installationmentioning

confidence: 99%

“…Photovoltaic (PV) systems have become some of the most popular renewable generation sources [1][2][3]. They can have different configurations based on centralized or multiple inverters with single-or two-stage topologies [4,5]. The flexibility and efficiency of two-stage voltage source inverter (VSI) topologies have led to their widespread use; however, single-stage topologies based on impedance-source networks with a centralized inverter [6][7][8][9] or micro-inverters [10,11] are increasing in popularity as simple and economical configurations that can overcome the shortcomings of two-stage VSI topologies.…”

Section: Introductionmentioning

confidence: 99%

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State-Space Model of Quasi-Z-Source Inverter-PV Systems for Transient Dynamics Studies and Network Stability Assessment

et al. 2021

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Photovoltaic (PV) power systems are increasingly being used as renewable power generation sources. Quasi-Z-source inverters (qZSI) are a recent, high-potential technology that can be used to integrate PV power systems into AC networks. Simultaneously, concerns regarding the stability of PV power systems are increasing. Converters reduce the damping of grid-connected converter systems, leading to instability. Several studies have analyzed the stability and dynamics of qZSI, although the characterization of qZSI-PV system dynamics in order to study transient interactions and stability has not yet been properly completed. This paper contributes a small-signal, state-space-averaged model of qZSI-PV systems in order to study these issues. The model is also applied to investigate the stability of PV power systems by analyzing the influence of system parameters. Moreover, solutions to mitigate the instabilities are proposed and the stability is verified using PSCAD time domain simulations.

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Section: Model Of the Pv Installationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

State-Space Model of Quasi-Z-Source Inverter-PV Systems for Transient Dynamics Studies and Network Stability Assessment

et al. 2021

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“…1), is presented in this Subsection. The small-signal state-space model of the PV panel is derived from the I-V characteristics at the MPP (Vmpp, Impp) [2], [4], [22], 1 ,…”

Section: A Pv Installation Modelmentioning

confidence: 99%

“…According to the mathematical characterization of the MPPT control in [4], [22], the small-signal state-space model is expressed as…”

Section: A Pv Installation Modelmentioning

confidence: 99%

“…Renewables such as photovoltaic (PV) and wind power generation systems are steadily replacing fossil fuels in power grids [1] − [3]. Broadly speaking, they have single-or two-stage designs, with the most common being the DC/DC and DC/AC voltage source inverter configuration [4], [5]. However, single-stage configurations based on Z-source inverters are becoming an attractive alternative [5] − [8].…”

Section: Introductionmentioning

confidence: 99%

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Frequency Domain Stability Assessment of Photovoltaic Power Generation Systems with Quasi-Z-Source Inverters

Sainz¹,

Monjo²

2021

REPQJ

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Photovoltaic power generation systems are one of the main renewable power sources, and quasi-Z-source inverters are becoming powerful devices to integrate these systems in AC grids. However, stability issues due to the damping behaviour of converters must be considered. There are several studies in this direction but instability concerns are not completely solved yet. This paper contributes with a procedure for the stability assessment of photovoltaic power generation systems with quasiZ-source inverters in the frequency domain. The study is based on the small-signal averaged model of the system expressed in the s-domain and the stability criterion derived from the frequency characteristics of the state-space matrix. The influence of the photovoltaic power generation system operating point on stability is studied by the proposed procedure. Eigenvalue analysis and PSCAD/EMTDC simulations are also performed to validate the obtained results.

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Design of Water Pumping System with Off-Grid Connected Solar PV Array Driven Permanent Magnet Synchronous Motor

Naveen¹,

Sharma²

2022

Recent Advances in Manufacturing Modelling and Optimization

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Small-Signal Modelling and Design Validation of PV-Controllers With INC-MPPT Using CHIL

Cited by 30 publications

References 25 publications

State-Space Model of Quasi-Z-Source Inverter-PV Systems for Transient Dynamics Studies and Network Stability Assessment

State-Space Model of Quasi-Z-Source Inverter-PV Systems for Transient Dynamics Studies and Network Stability Assessment

Frequency Domain Stability Assessment of Photovoltaic Power Generation Systems with Quasi-Z-Source Inverters

Design of Water Pumping System with Off-Grid Connected Solar PV Array Driven Permanent Magnet Synchronous Motor

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