Instantaneous control of a single-phase PWM converter considering the variation of observer parameter

Author

Kim, Man-Gi ; Lee, Woo-Cheol ; Hyun, Dong-seok

Author_Institution

Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea

Volume

2

fYear

1997

fDate

9-14 Nov 1997

Firstpage

839

Abstract

In this paper, an instantaneous controller of a single-phase PWM power converter is realized using a DSP. The stable PI gain of the input current and the DC link voltage control system is designed. An observer is used to feedforward the load current estimate. The load current observer has an outer adaptive routine to compensate for the DC link capacitance. It is shown in the experimental results that the observer performance and system dynamics can be enhanced and input current distortion can be reduced by compensating for the DC link capacitance to the observer

Keywords

PWM power convertors; control system analysis; control system synthesis; electric current control; feedforward; observers; two-term control; voltage control; DC link capacitance compensation; DC link voltage control; control design; control performance; control simulation; input current control; input current distortion; instantaneous control; load current estimate feedforward; observer parameter variation; observer performance; outer adaptive routine; single-phase PWM power converter; stable PI gain; system dynamics; Capacitance; Circuits; Control systems; Current control; Frequency conversion; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Rectifiers; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-3932-0

Type

conf

DOI

10.1109/IECON.1997.672011

Filename

672011