Title :
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
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;
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
DOI :
10.1109/IECON.1997.672011
