Control Strategy of Three-Phase Inverter with Isolation Transformer

Chen, Jie; Li, Jun; Qiu, Ruichang; Liu, Zhigang

doi:10.3390/en12204005

Cited by 4 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Isolation transformers prevent the transmission of the DC components in the signals while allowing the passage of AC components. 3-phase isolation transformer type has been configured to convert from Delta to Wye since it is highly common in distributed renewable energy-based systems [31].…”

Section: Isolation Transformer With Three Phasesmentioning

confidence: 99%

Influence of reactive power compensation from PV systems on electrical grid

Othman

Alyozbaky

2023

IJPEDS

View full text Add to dashboard Cite

The rising electricity consumption, rapid fossil fuel depletion, and a higher shift to the use of renewable or green energy resources have increased the need to integrate renewable and distributed energy resources (DERs), like solar photovoltaic (PV) energy to power the utility grids. In this study, the researchers have determined the effect of PV inverters to offer reactive power to an adapted IEEE 13-node distribution network. Power flow analyses were conducted on MATLAB/Simulink for various reactive power modes of PV inverters to show the effect of the reactive power on the regulation of grid voltage, reduced the total harmonic distortion (THD), and maintain the power factor so as to improve the ability of the system to handle power. The result shows that using a 400 KW PV system in a bus (675) led to a reduction in the power generated from the generator by 11%, and the use of the reactive power capability of PV inverters on-site improved the voltage profile significantly. as well, reduced the voltage THD by 27.09% when injected with reactive power, reduce the current THD by 77.39% When absorbing reactive power, and improved the power factor on-site.

show abstract

Section: Isolation Transformer With Three Phasesmentioning

confidence: 99%

Influence of reactive power compensation from PV systems on electrical grid

Othman

Alyozbaky

2023

IJPEDS

View full text Add to dashboard Cite

show abstract

“…Hence, fast and smart control system plays an important task to satisfy the sinusoidal load voltages shaping. For this purpose, different control methods have been applied to the four‐leg inverters …”

Section: Introductionmentioning

confidence: 99%

“…Among control methods, proportional‐resonant (PR) and repetitive controllers bring zero steady‐state error with a low number of sensors . But the dynamic performance of these controllers is weak, especially under nonlinear loads.…”

Section: Introductionmentioning

confidence: 99%

Continuous finite‐time control of four‐leg inverter through fast terminal sliding mode control

Pichan¹,

Markadeh

Blaabjerg

2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary A favorable option to supply unbalanced loads and provide the neutral wire is the four‐leg inverter. Controllers with high robustness and dynamic response should be used to adjust the inverter load voltages for unknown, unbalanced, and nonlinear loads. Sliding mode controls (SMCs) have a simple structure, good robustness against model parameter uncertainties, and desirable transient response. However, chattering phenomena, variable switching frequency, and error convergence to the operating point on infinite time are the main weaknesses of the conventional SMC method. In this paper, to restrict the conversion time to a finite and controllable value, terminal sliding mode control (TSMC) and fast terminal sliding mode control (FTSMC) procedures are proposed to regulate the load voltages of the four‐leg inverter. In these methods, a continuous control output is suggested to fix the switching frequency and reduce chattering phenomena significantly. Furthermore, the proposed methods are highly robust against model parameter uncertainties. Different simulation and experimental results on a 3‐kW test bench under different loading conditions are done to validate the significant performance of the proposed methods.

show abstract