A simplified SVPWM control strategy for PV inverter

Author

Yan, Shijie ; Zhang, Qun ; Du, Heng

Author_Institution

Sch. of Inf. Sci. & Eng., Northeastern Univ., Shenyang, China

fYear

2012

fDate

23-25 May 2012

Firstpage

225

Lastpage

229

Abstract

Space vector pulse width modulation (SVPWM) technology has widely application in inverter because of easy digital realization. However, in pulse wave generation, not only the trigonometric function is involved, but also sector selection will be considered when six vectors are calculated. The realization of SVPWM control algorithm is very complicated, although its control accuracy is high. Photovoltaic (PV) inverter is simplified DC/AC converter with respect to power driver system and it does not need complicated SVPWM. To solve the problem for PV inverter, a new simplified SVPWM control strategy is proposed. It has only comparison and normal arithmetical operations, so that the judgment of sector and calculation of vector operating time is completed. It eliminates the conventional SVPWM massive calculation of trigonometric function, and the system performance is improved. Simulation and experimental results show that the new SVPWM control strategy is feasible.

Keywords

DC-AC power convertors; PWM invertors; photovoltaic power systems; DC/AC converter; PV inverter; SVPWM control algorithm; SVPWM control strategy; control accuracy; digital realization; normal arithmetical operations; photovoltaic inverter; power driver system; pulse wave generation; space vector pulse width modulation technology; trigonometric function; Filtering algorithms; Harmonic analysis; Inverters; Power harmonic filters; Space vector pulse width modulation; Vectors; Voltage control; A Simplified Control Strategy; PV inverter; SVPWM; Voltage vector;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2012 24th Chinese

Conference_Location

Taiyuan

Print_ISBN

978-1-4577-2073-4

Type

conf

DOI

10.1109/CCDC.2012.6244031

Filename

6244031