Photovoltaic inverter control method based on a novel algorithm

Author

Li Shengqing ; Zhang Bing ; Xu Tianjun ; Yang Jun

Author_Institution

Coll. of Electr. & Inf. Eng., Hunan Univ. of Technol., Zhuzhou, China

fYear

2013

fDate

23-24 Dec. 2013

Firstpage

340

Lastpage

343

Abstract

The key equipment of photovoltaic grid-connected system is photovoltaic grid-connected inverter; the output power quality is determined by the control method of inverter. Based on the model of a photovoltaic grid-connected inverter, this paper presents a new grid-connected inverter control algorithm that is iterative proportional integral algorithm, and derives an output expression and transfer function of grid-connected inverter. Control accuracy and speed of inverter were improved through real-time setting its optimal proportional-integral controller parameters; thereby the quality of the output current was ameliorated. Simulation and experimental results show that this method has a high practical value.

Keywords

PI control; invertors; power grids; power supply quality; real-time systems; transfer functions; grid-connected inverter control; iterative proportional integral algorithm; photovoltaic grid-connected inverter; photovoltaic inverter control; power quality; proportional-integral controller; real-time setting; transfer function; Control systems; Harmonic analysis; Inverters; Photovoltaic systems; Power harmonic filters; Voltage control; control strategy; photovoltaic grid-connected inverter; power quality;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement, Sensor Network and Automation (IMSNA), 2013 2nd International Symposium on

Conference_Location

Toronto, ON

Type

conf

DOI

10.1109/IMSNA.2013.6743285

Filename

6743285