Non ideal effect of current transformer and its influence on controller design of cascade multilevel STATCOM

Author

Shi, Yanjun ; Liu, Bangyin ; Duan, Shanxu

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2012

fDate

25-28 June 2012

Firstpage

410

Lastpage

415

Abstract

This paper discusses influences of using current transformer (CT) as feedback element in a cascade multilevel converter. First, a simplified transfer function model of CT is built by small signal test and the model parameter is verified by large signal experiment. Then, a cascade multilevel STATCOM with CT feedback is modeled and analyzed. Influences of CT on controller designing are discussed, along with solutions. Finally, experiments are performed to verify proposed method.

Keywords

control system synthesis; current transformers; feedback; static VAr compensators; transfer functions; CT feedback; cascade multilevel STATCOM; cascade multilevel converter; controller design; current transformer; feedback element; model parameter; signal experiment; signal test; simplified transfer function model; Automatic voltage control; Computed tomography; Current transformers; Delay; Distributed power generation; Power electronics; Transfer functions; DC injection; cascade STATCOM; current transformer (CT);

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics for Distributed Generation Systems (PEDG), 2012 3rd IEEE International Symposium on

Conference_Location

Aalborg

Print_ISBN

978-1-4673-2021-4

Electronic_ISBN

978-1-4673-2022-1

Type

conf

DOI

10.1109/PEDG.2012.6254035

Filename

6254035