Iterative learning control of dispatchable grid-connected distributed energy resources for compensation of grid current harmonic distortions

Delghavi, Mohammad B.; Yazdani, Amirnaser; Alizadeh, Abdollah

doi:10.1016/j.ijepes.2021.107064

Cited by 5 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Losses in power transformers are become more significant due to rising energy costs (Metwally, 2011). The increase in the use of electronic elements causes the formation of current harmonics in the system (Delghavi et al, 2021). This increases the losses in power transformers.…”

Section: Introductionmentioning

confidence: 99%

Determining Accuracy of Temperature Limit Change in Power Transformer Core Using Temperature-Time Parameter Method

PAMUK

2023

Black Sea Journal of Engineering and Science

View full text Add to dashboard Cite

The efficient transmission of electrical energy depends on amplifying voltage values with power transformers. To obtain higher efficiency from transformers, the core and winding type of transformer, the geometric structure of the core, and the shaping techniques in the windings are changed. This requires modeling transformer windings with equivalent circuits and calculating the inductance and electrical parameters appropriately. In this study, two-dimensional (2D) finite element solutions with energy perturbation and flux-coupling methods are used. The correctness of the inductance values of transformer windings was established, and the design was performed, by considering the inductance and electrical parameter values, which are comparable to the energy perturbation and flux connection. However, when two-dimensional calculated fields are used, the flux coupling method requires less computation and gives numerically more accurate results than the energy perturbation method. So, it is concluded that the flux-coupling approach should be chosen as the preferred method for calculating the inductance and electrical parameters of transformer windings. The numerical properties and equivalence of energy perturbation and flux-connection methods, the “apparent” inductance value of the primary and secondary field windings of power transformer operating under transient conditions, using the temperature-time parameter method, are calculated and its accuracy is demonstrated.

show abstract

Section: Introductionmentioning

confidence: 99%

Determining Accuracy of Temperature Limit Change in Power Transformer Core Using Temperature-Time Parameter Method

PAMUK

2023

Black Sea Journal of Engineering and Science

View full text Add to dashboard Cite

show abstract

Non-lifted norm optimal iterative learning control for networked dynamical systems: A computationally efficient approach

Gao,

Zhuang,

Tao

et al. 2024

Journal of the Franklin Institute

View full text Add to dashboard Cite

Dynamic Performance Evaluation of Inverter Feeding a Weak Grid Considering Variable System Parameters

et al. 2021

View full text Add to dashboard Cite

Interfacing a weak grid imposes challenges on distributed generators (DGs). These challenges include transient frequency and voltage dynamics that can destabilize the system. Accordingly, this paper investigates the grid stiffness based on different scenarios and the dynamics of a grid feeding DG connected to a weak grid. Moreover, the dynamic effects of the physical and control parameters on the system's stability are deeply analyzed and evaluated. Specifically, complete mathematical models and graphical representation are carried out to precisely examine the impact of the system parameters on the stability and performance of the DG. Therefore, stable deployment of renewable energy resources into power networks can be achieved as well as an efficient and robust performance of DGs can be ensured when connected to weak grids. The obtained results show the importance of the performed study in optimal sizing and designing the output filter of the inverter and the impact of tuning the control parameters on the system dynamics. As a result, a proper design of system physical and control parameters can be accurately achieved considering all factors affect the system performance. The paper also conducts detailed and elaborated analyses and simulations to evaluate the performance of a PI-controlled RC damped inverter connected to a weak grid. The proposed filter design of the interfacing inverter can significantly extend the integration of DGs into microgrids without requiring complex control schemes or oversized components.

show abstract

Iterative learning control of dispatchable grid-connected distributed energy resources for compensation of grid current harmonic distortions

Cited by 5 publications

References 21 publications

Determining Accuracy of Temperature Limit Change in Power Transformer Core Using Temperature-Time Parameter Method

Determining Accuracy of Temperature Limit Change in Power Transformer Core Using Temperature-Time Parameter Method

Non-lifted norm optimal iterative learning control for networked dynamical systems: A computationally efficient approach

Dynamic Performance Evaluation of Inverter Feeding a Weak Grid Considering Variable System Parameters

Contact Info

Product

Resources

About