Parameter Identification of Power Electronic Circuits Based on Hybrid Model

Author

Ma, Hao ; Mao, Xingyun ; Zhang, Ni ; Xu, Dehong

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou

fYear

2005

fDate

16-16 June 2005

Firstpage

2855

Lastpage

2860

Abstract

In this paper a unified hybrid model is given for power electronic circuits based on hybrid system theory. Based on this model, a parameter identification method that can be applied in fault diagnosis is presented. Then hybrid models of six kinds of DC/DC circuits (including CCM and DCM mode), three-phase rectifier and three-phase inverter are presented. And the parameters can be identified by using least square algorithm based on these models. The validity of this method is validated by experiments in which the inductance, capacitance, load resistance and ESR of capacitor of buck circuit are identified

Keywords

DC-DC power convertors; fault diagnosis; invertors; least squares approximations; parameter estimation; rectifying circuits; CCM; DC/DC circuits; DCM; ESR; buck circuit capacitor; fault diagnosis; hybrid system theory; least square algorithm; parameter identification; power electronic circuits; three-phase inverter; three-phase rectifier; unified hybrid model; Capacitance; Circuits; Fault diagnosis; Inductance; Inverters; Least squares methods; Parameter estimation; Power electronics; Power system modeling; Rectifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1582038

Filename

1582038