A Comprehensive Strategy for Power Quality Improvement of Multi-Inverter-Based Microgrid With Mixed Loads

Dong, Henan; Yuan, Shuai; Han, Zijiao; Ding, Xilun; Ma, Shaohua; Han, Xiangyu

doi:10.1109/access.2018.2826923

Cited by 39 publications

(15 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The controller includes voltage/current control loops and droop control method. If the link impedance and output impedance are considered inductive and the equivalent circuit for two inverters in parallel are shown in Figure 3, the active and reactive power injected to the bus by every unit are expressed as follows [31]:…”

Section: Network-based Control Methods For Inverter Parallel Operationmentioning

confidence: 99%

“…r is the equivalent resistance and n X is the equivalent inductive reactance for the n th inverter. Considering a small phase difference between E n and U, it can be seen from Equations (1) and (2) that the active P n is strongly dependent on the power angle φ n , while the reactive power is mainly influenced by the amplitude difference E n -U [31]. Consequently, most wireless load sharing controllers introduce artificial droops into the output voltage reference.…”

Section: Network-based Control Methods For Inverter Parallel Operationmentioning

confidence: 99%

See 1 more Smart Citation

Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid

Zhang

2019

Electronics

View full text Add to dashboard Cite

Potential performance improvements can be obtained by introducing communication techniques in the power electronic systems. However, network-induced time-delay could bring negative consequences of degrading performance or destabilizing the system in many cases. To investigate and handle the impacts of time-delay, a suit of analytical methodology is proposed, where both delay-insensitive and delay-sensitive control strategies of network-based system have their theoretical methods and different problem-solving paths. The former is to predict the maximum allowable boundaries of time-delay for releasing more network resources, and the latter is to use the controller-altering method for changing its original instability, respectively. The proposed methodology is concretely applied in network-based system of droop-controlled AC (Alternating Current) microgrid in islanded mode. Two different current-sharing strategies are mathematically analyzed and given to verify their validity. Experimental results also show the effectiveness of the proposed methodology in droop-controlled AC microgrid system, which provides theoretical guidance on how to use network-based control for the other power electronic systems.

show abstract

Section: Network-based Control Methods For Inverter Parallel Operationmentioning

confidence: 99%

Section: Network-based Control Methods For Inverter Parallel Operationmentioning

confidence: 99%

Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid

Zhang

2019

Electronics

View full text Add to dashboard Cite

show abstract

“…The accuracy and precision of phase tracking greatly affect the performance of grid connected inverter. If the phase-locked is not accurate or the accuracy is not high enough, it will seriously affect the quality of the output power of the inverter, and even damage the electrical equipment under the jurisdiction of the microgrid system [9][10]. In the grid connected inverter, the d-q Synchronous Reference Frame PLL (SRF-PLL) is often used to collect the voltage amplitude, phase, frequency and other information.…”

Section: Phase-locked Loop (Pll) Technologymentioning

confidence: 99%

Smooth Switching of Micro Grid Operation Mode of Virtual Synchronous Generator

2020

IJOMAM

View full text Add to dashboard Cite

“…The PQ problems of multi inverter based micro grid is resolved by the aforesaid two strategies. Besides, the harmonic suppression control strategy is used for minimizing the harmonic components [8]. The PQ is improved by adding the improved Dynamic Voltage Restorer (DVR) and RLC link filter among the injection transformers with voltage source inverter.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Improvements in Grid Connected PV System using Novel Optimization Technique

Kumar*¹,

Kumar²,

Siddhik³

2019

IJRTE

View full text Add to dashboard Cite

In the last few years, several concepts have been developed in the field of Power Quality (PQ) improvements. Features of PQ plays a significant part in power system based applications. Nowadays, technologies in Renewable Energy Source (RES) have got more opportunities for promoting Photo-Voltaic (PV) for generating electric power. It may affect the reliability and stability of entire power system, also produces the switching frequency with irregular manner and variation within the certain region. Also, Incremental-Conductance (IC) method miserably fails to recognize Global Maximum Power Point (MPP) and gets trapped in one of the Local MPP. Since the conventional MPPT (Maximum Power Point Tracking) might not separate the maximum power of the P-V characteristic curve, a novel tracking system needs to be established. In this research work, Kinetic Gas Molecular Optimization (KGMO) is implemented with IC for improving the PQ by providing the adequate switching pulse to inverter for enhancing the system performance. The proposed method reduced the Total Harmonic Distortion (THD) up to 4.67 %, and the efficiency is observed by evaluation over the traditional Radial Basis Function Neural Network (RBFNN) and IC-MPPT techniques. The proposed method is implemented in the MATLAB/Simulink software to analyze the performance of PQ issues.

show abstract

A Comprehensive Strategy for Power Quality Improvement of Multi-Inverter-Based Microgrid With Mixed Loads

Cited by 39 publications

References 9 publications

Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid

Analysis Methodology for Evaluation of Time-Delay Impact on Network-Based System for Droop-Controlled AC Microgrid

Smooth Switching of Micro Grid Operation Mode of Virtual Synchronous Generator

Power Quality Improvements in Grid Connected PV System using Novel Optimization Technique

Contact Info

Product

Resources

About