Title :
Implementing the virtual output impedance concept in a three phase system utilising cascaded PI controllers in the dq rotating reference frame for microgrid inverter control
Author :
Rowe, Christopher N. ; Summers, T.J. ; Betz, R.E. ; Moore, Timothy G. ; Townsend, Christopher D.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Univ. of Newcastle, Newcastle, NSW, Australia
Abstract :
This paper extends research on single phase microgrids [1] to implement a Virtual Output Impedance (VOI) in a three phase system utilising cascaded PI voltage and current control in the Rotating Reference Frame (RRF). The paper proposes two methods for the selection of VOI values; a selection surface and a summation approach. SABER simulations and dSPACE hardware results are provided for a two inverter microgrid to validate the control scheme and selection techniques.
Keywords :
PI control; cascade control; distributed power generation; electric current control; invertors; voltage control; RRF; SABER simulations; VOI values; cascaded PI controllers; current control; dSPACE hardware; dq rotating reference frame; microgrid inverter control; selection surface; single phase microgrids; summation approach; three phase system; virtual output impedance concept; voltage control; Impedance; Inverters; Microgrids; Reactive power; Surface impedance; Transforms; Voltage control; Distributed Generation; Microgrids; Power Electronics; Power Frequency Droop; Virtual Output Impedance;
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6634691
