Simplified variable band hysteresis current control for grid-connected inverter

Author

Zhang, Jie ; Hong, Jie ; Wu, Peng ; Ge, Jing ; Kang, Yong

Author_Institution

Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

Because switching frequency of the fixed band hysteresis current controller varies greatly, it is more difficult to design the output filter. Although variable band hysteresis control can achieve fixed switching frequency, it requires more processor resources when it is actualized by software. This paper analyzes the changing patterns of switching frequency by transient current equation, and replaces sinusoidal band with triangular band to simplify the corresponding software design under the premise of little change of switching frequency. Simulation results show the feasibility of this method.

Keywords

electric current control; invertors; power filters; power grids; switching convertors; fixed band hysteresis current controller; fixed switching frequency; grid-connected inverter; output filter; processor resources; simplified variable band hysteresis control; software design; transient current equation; Equations; Hysteresis; Inductors; Inverters; Mathematical model; Switches; Switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073866

Filename

6073866