Title :
The design of constant frequency hysteresis current controller with voltage space vector in PV grid-connected inverter
Author :
Wang, GenPing ; Yi, Lingzhi ; Zou, Xiao ; He, Sufeng ; Li, Ming
Author_Institution :
ShenZhen Polytech., Shenzhen
Abstract :
A new constant-frequency hysteresis current control algorithm for PV grid-connected inverter is proposed, in which the complex plane is divided into six sectors based on line voltage space vector of electric power grid, and two-phase switches are decoupled respectively in every sector to control corresponding line currents, and the hysteresis band is modified by prediction, so that the output current waveforms can be improved, and the control is more accurate. The simulation proves the validity and feasibility of the proposed algorithm.
Keywords :
control system synthesis; electric current control; frequency control; complex plane; constant frequency hysteresis current controller design; constant-frequency hysteresis current control algorithm; electric power grid; hysteresis band; line voltage space vector; photovoltaic grid-connected inverter; two-phase switches; Circuits; Electric current control; Frequency; Helium; Hysteresis; Inverters; Power systems; Steady-state; Switches; Voltage control;
Conference_Titel :
Automation Congress, 2008. WAC 2008. World
Conference_Location :
Hawaii, HI
Print_ISBN :
978-1-889335-38-4
Electronic_ISBN :
978-1-889335-37-7
