Voltage Imbalance and Harmonics Compensation for an Autonomous Mode Microgrid using Power Droop Controller
B. Mothi Ram1, P. Raja Padma Priya2
1B. Mothi Ram, Department of Electrical & Electronic Engineering, Sagi Rama Krishnam Raju Engineering College, Bhimavaram (Andhra Pradesh), India.
2P. Raja Padma Priya, Department of Electrical & Electronic Engineering, Sagi Rama Krishnam Raju Engineering College, Bhimavaram (Andhra Pradesh), India.
Manuscript received on 12 May 2019 | Revised Manuscript received on 06 June 2019 | Manuscript Published on 15 June 2019 | PP: 166-171 | Volume-8 Issue-1S3 June 2019 | Retrieval Number: A10310681S319/2019©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Generally, Power-Electronics-Interfaced Distributed Generation (DG) system use voltage source inverters (VSI) in a microgrid. It is the responsibility of the microgrid to support the loads when the main grid stops functioning. In off-grid mode, VSIs regulates the voltage as well as the frequency of the microgrid. As a result, the quality of the power decreases whenever imbalanced loads or electronic loads appear. This paper explores a novel strategy to mitigate both the voltage imbalance as well as harmonics in islanded mode. The control system consists of power droop regulators, internal single synchronous reference frame (SRF) in light of voltage imbalance as well as harmonic controllers which are accountable for voltage imbalance as well as harmonic mitigation and modified virtual impedance loop technique used to enhance the compensation effect further. The proposed system consists of regular Proportional-Integral (PI) regulator, Proportional-Integral cum multi-resonant (PIR) regulator as well as Proportional-Integral cum multi-resonant regulator with modified virtual impedance loop technique. The MATLAB/SIMULINK software platform is used to develop the system model and outputs are shown. The incurred value of PIR regulator with modified virtual impedance loop is compared with Proportional Integral regulator and PI cum multi-resonant regulator and is proved better.
Keywords: Distributed Generation (DG), Proportional Integral (PI) Controller, Proportional Integral Cum Multi-Resonant (PIR) Controller, Proportional Integral Cum Multi-Resonant Controller With Modified Virtual Impedance Loop Technique, Voltage Source Inverter (VSI).
Scope of the Article: Waveform Optimization for Wireless Power Transfer