Title :
Control of unbalanced voltage PWM converter using instantaneous ripple power feedback
Author :
Kang, Jun-Koo ; Sul, Seung-Ki
Author_Institution :
Sch.of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
The voltage unbalance can impair a PWM converter system because the input active and reactive power ripples are generated by the cross products of line currents and unbalanced voltages. In this paper, effects of voltage unbalance in a three phase PWM converter are analyzed and a new control scheme to suppress input power ripple and DC link voltage ripple caused by unbalances is presented. The proposed method is based on the instantaneous power theory to compute compensation currents which cancel the power ripple. The simulation and experimental results are presented to verify the feasibility and effectiveness of the proposed method
Keywords :
PWM power convertors; compensation; feedback; reactive power control; voltage control; DC link voltage ripple suppression; compensation currents; input active power ripples; input power ripple suppression; input reactive power ripples; instantaneous power theory; instantaneous ripple power feedback; three phase PWM converter; unbalanced voltage PWM converter control; voltage unbalance; Computational modeling; Feedback; Frequency; Power generation; Power harmonic filters; Power system harmonics; Power system simulation; Pulse width modulation; Pulse width modulation converters; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616770
