Stability of synchronous reference frame-phase locked loop for grid-connected inverter

Author

Singhal, Achintya ; Dubey, Vijendra Kumar ; Suryawanshi, H.M.

Author_Institution

Dept. of Electr. Eng., Visvesvaraya Nat. Inst. of Technol. Nagpur, Nagpur, India

fYear

2014

fDate

9-11 May 2014

Firstpage

1

Lastpage

5

Abstract

In this paper, synchronization of a voltage source inverter (VSI) to the grid is presented.VSI can control both active and reactive power which depends on the modulation index, LCL filter and the control method used. In order to avoid resonance effect, to reduce harmonic current, and to improve the stability of the current control loop, a passive damping resistor is introduced in the basic LCL filter. A synchronous reference frame-phase locked loop is used to synchronize the grid and VSI. Design of a 3-phase Y-connected LCL-damping resistor filter and two PI current controller along with control strategy of grid connected inverter is presented. Proposed schematic is simulated in MATLAB/SIMULINK 2010 and simulation results are provided.

Keywords

PI control; control system synthesis; electric current control; invertors; power filters; reactive power; stability; 3-phase Y-connected LCL-damping resistor filter design; LCL filter; MATLAB-SIMULINK 2010; PI controller; VSI; active power; current control loop; grid-connected inverter; harmonic current reduction; modulation index; passive damping resistor; reactive power; resonance effect avoidance; stability; synchronous reference frame-phase locked loop; voltage source inverter; Insulated gate bipolar transistors; MATLAB; Switches; DC/AC converter; LCL-damping resistor filter; Synchronous reference frame-phase locked loop (SRF-PLL);

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances and Innovations in Engineering (ICRAIE), 2014

Conference_Location

Jaipur

Print_ISBN

978-1-4799-4041-7

Type

conf

DOI

10.1109/ICRAIE.2014.6909229

Filename

6909229