A novel voltage control strategy based on the virtual impedance for seamless transfer of the dual-mode inverter

Author

Runbiao Liu ; Chunsheng Wu ; Yibo Wang ; Honghua Xu

Author_Institution

Renewable Energy Generation R&D Center, Inst. of Electr. Eng., Beijing, China

fYear

2013

fDate

26-29 Oct. 2013

Firstpage

427

Lastpage

430

Abstract

In distributed generation(DG)unions, the requirements of inverter could be operated in island mode as a voltage source, which could also be operated in grid-tied mode as a current source. When the inverter transfer between the two modes, which may arouse spike of the voltage and current. This paper analyzed the features of inverter in voltage control mode and current control mode, respectively, and then presented a novel voltage control strategy based on the virtual impedance related to the filter inductor current to complete the seamless transfer between the two modes. The algorithm was discussed in detail in this paper. Computer simulation and experiments proved the feasibility of this control scheme.

Keywords

distributed power generation; electric current control; invertors; voltage control; DG unions; current control mode; current source; distributed generation unions; dual-mode inverter; grid-tied mode; island mode; seamless transfer; virtual impedance; voltage control strategy; voltage source; Current control; Equations; Frequency control; Impedance; Inverters; Pulse width modulation; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2013 International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4799-1446-3

Type

conf

DOI

10.1109/ICEMS.2013.6754425

Filename

6754425