Bidirectional Power Flow Control in AC/DC Hybrid System under AC and DC Fault Conditions

Wai Wai Hnin, Zarchi Linn, Soe Win

Abstract


This paper presents a hybrid AC-DC microgrid to reduce the process of multiple conversions in an individual AC microgrid or DC microgrid. The proposed hybrid microgrid compose of both AC microgrid and DC microgrid connected together by bidirectional interlink converter (BIC). Utility grid, 150kVA diesel generator (DG) and 100kW AC load are connected in AC microgrid. DC microgrid is composed of 100 kW photovoltaic array (PV), 20kW battery energy storage system (BESS) and 20kW DC load. The droop control technique is applied to control the system for power sharing within the sources in AC/DC hybrid microgrid in proportion to the power rating. When the faults occur at AC bus, protection signal applied to breaker for isolating the healthy and faults system. DC faults occur at DC bus, DC breaker isolate the AC and DC bus. The system performance for power flow sharing on hybrid AC-DC microgrid is demonstrated by using MATLAB/SIMULINK.

Keywords: AC fault, DC fault, droop control, hybrid microgrid, power flow. 


Full Text:

PDF

References


Li, Chendan; Chaudhary, Sanjay K.; Quintero, Juan Carlos Vasquez; Guerrero, Josep M. “Power flow analysis for droop controlled LV hybrid AC-DC microgrids with virtual impedane” Proceedings of the IEEE Power & Energy Society General Meeting, PES 2014

Hyeon-Kyun Ji, Hyeong-Jun Yoo, Thai-Thanh Nguyen, and Hak-Man Kim , “Applying Improved Droop Control to Hybrid Microgrid Control”, International Journal of Control and Automation Vol. 8, No. 7 (2015), pp. 395-404

Chitra Natesan1, Senthilkumar Ajithan, Shobana Mani, and Prabaakaran Kandhasamy, “Applicability of Droop Regulation Technique in Microgrid - A Survey” ,Volume 18 Issue 3, 10 July 2014

Octavian Cornea, Gheorghe-Daniel Andreescu, Nicolae Muntean, and Dan Hulea, “Bidirectional Power Flow Control in a DC Microgrid Through a Switched-Capacitor Cell Hybrid DC–DC Converter” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 64, NO. 4, APRIL 2017

Saeed Peyghami, Student Member, IEEE, Hossein Mokhtari, Senior Member, IEEE, and Frede Blaabjerg, Fellow, IEEE “Autonomous Operation of a Hybrid AC/DC Microgrid with Multiple Interlinking Converters”2018

Dwi Riana Aryani and Hwachang Song “Coordination Control Strategy for AC/DC Hybrid Microgrids in Stand-Alone Mode” energies 2016,9,469, V

Mustafa Farhadi “Hybrid Energy Storage Implementation in DC and AC Power System for Efficiency, Power Quality and Reliability Improvements” 2016




DOI: https://doi.org/10.12962/j25796216.v3.i2.98

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.