Title :
Control of a PWM converter in different input voltage conditions
Author :
Min, Dong-Ki ; Ahn, Sung-Chan ; Hyun, Dong-seok
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
A control scheme of a three-phase voltage-source PWM power converter available for the condition of different input voltages is proposed in this paper. From the steady-state model of the power converter, the effect caused by the input voltage on the control of the input current is analyzed from the point of the linear controllability of the input current. Sufficient voltage level of the DC link to control the input current linearly is then analytically determined. The effect of the different input voltage on the DC link voltage control with a fixed-gain controller is analyzed and a simple but effective online gain tuning algorithm is proposed to obtain the optimal regulation of the link voltage. In conclusion, the validity of the proposed control scheme is proved by the experimental results
Keywords :
PWM power convertors; control system analysis; control system synthesis; controllability; electric current control; optimal control; voltage control; DC link voltage control; control design; control performance; fixed-gain controller; input current control; input voltage conditions; linear controllability; online gain tuning algorithm; optimal regulation; steady-state model; three-phase voltage-source PWM power converter; voltage control scheme; Algorithm design and analysis; Circuits; Current control; Equations; Optimal control; Pulse width modulation converters; Research and development; Steady-state; Switches; 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.1997.672076
