An Improved $\alpha\beta$ -EPLL Based on Active Disturbance Rejection Control for Complicated Power Grid Conditions

Sun, Dongyang; Long, Haotian; Zhou, Kai; Wu, Fengjiang; Sun, Liang

doi:10.1109/access.2019.2943490

Cited by 7 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The structures of the PLLs and the droop controllers are compared and the resemblance between them is stated in [31]. Reference [32] proposes to include an active disturbance rejection control with an EPLL for better frequency control and to mitigate the voltage drop in a complex grid system. An improved P&O technique with the confined search space is proposed in [33].…”

Section: Introductionmentioning

confidence: 99%

An Optimized Enhanced Phase Locked Loop Controller for a Hybrid System

et al. 2022

View full text Add to dashboard Cite

The use of renewable energy sources is the need of the hour, but the highly intermittent nature of the wind and solar energies demands an efficient controller be connected with the system. This paper proposes an adept control algorithm for an isolated system connected with renewable energy sources. The system under consideration is a hybrid power system with a wind power harnessing unit associated with a solar energy module. A controller that works with enhanced phase locked loop (EPLL) algorithm is provided to maintain the quality of power at the load side and ensure that the source current is not affected during the load fluctuations. EPLL is very simple, precise, stable, and highly efficient in maintaining power quality. The double-frequency error which is the drawback of standard phase locked loop is eliminated in EPLL. Optimization techniques are used here to tune the values of the PI controller gains in the controlling algorithm. Tuning of the controller is an important process, as the gains of the controllers decide the quality of the output. The system is designed using MATLAB/SIMULINK. Codes are written in MATLAB for the optimization. Out of the three different optimization techniques applied, the salp swarm algorithm is found to give the most suitable gain values for the proposed system. Solar power generation is made more efficient by implementing maximum power point tracking. Perturb and observe is the method adopted for MPPT.

show abstract

Section: Introductionmentioning

confidence: 99%

An Optimized Enhanced Phase Locked Loop Controller for a Hybrid System

et al. 2022

View full text Add to dashboard Cite

show abstract

Characteristic analysis and mitigation strategy for SSCI in series-compensated DFIG-based wind farm controlled by a virtual synchronous generator

Zhijian,

Jun,

Jiangbei

et al. 2024

ISA Transactions

View full text Add to dashboard Cite

Adaptive complex coefficient‐filtered extended states observer type three‐phase enhanced phase‐locked loop

Ge,

Huang,

Wang

et al. 2024

IET Power Electronics

View full text Add to dashboard Cite

This paper proposes an adaptive complex coefficient filtered (CCF) full order extended state observer (ESO) type three phase enhanced phase locked loop (EPLL), which is employed in matrix reactance frequency converter (MRFC) for rotating vectors measurement estimation. EPLL phase detector was analysed first to track not only the rad frequency and transient phase, but also the amplitude of the rotating vectors. Full order ESO can filter out more high frequency disturbance, so it can track frequency and phase more accurately than proportion and integration algorithm. CCF modules were analysed in theory to attenuate the disturbance within two times of the EPLL's cut‐off frequency. The whole adaptive CCF‐ESO‐EPLL design, including stability and parameter tuning were then interpreted. The proposed CCF‐ESO‐EPLL adapts the estimated frequency with CCF to attenuate the MRFC switching non‐linear disturbance as well as unknown disturbance by the full order ESO. The MRFC topology necessary measured vectors, as well as the input side reactive power adjustment capacity, were discussed. The theoretical conclusion has been verified on a MRFC prototype. The proposed CCF‐ESO‐EPLL has less parameter tuning, less computation resource requirement, better steady and dynamic performance, and outstanding disturbance robustness.

show abstract

An Improved $\alpha\beta$ -EPLL Based on Active Disturbance Rejection Control for Complicated Power Grid Conditions

Cited by 7 publications

References 26 publications

An Optimized Enhanced Phase Locked Loop Controller for a Hybrid System

An Optimized Enhanced Phase Locked Loop Controller for a Hybrid System

Characteristic analysis and mitigation strategy for SSCI in series-compensated DFIG-based wind farm controlled by a virtual synchronous generator

Adaptive complex coefficient‐filtered extended states observer type three‐phase enhanced phase‐locked loop

Contact Info

Product

Resources

About