A Passivity-Based Power Control Strategy of VSR PWM Rectifier under Unbalance Voltage

Yu Ling Ma; Jiu He Wang; Hao Xiang

doi:10.4028/www.scientific.net/AMR.622-623.1503

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 622-623A Passivity-Based Power Control Strategy of VSR...

A Passivity-Based Power Control Strategy of VSR PWM Rectifier under Unbalance Voltage

Abstract:

In actual application the three-phase gird voltage is unbalanced, but the control strategy of PWM rectifier is always based on balance grid voltage. So the control research of rectifier under unbalance voltage is necessary .In view of the mathematical of rectifier is nonlinear, we will adopt a kind of nonlinear control strategy called Passivity-Based Control (PBC).First based on Symmetric component theory we extract positive sequence of unbalance grid voltage, and then establish the standard Euler-Lagrange (EL) model of rectifier under positive sequence, next we design the system controller based on the PBC theory. Based on passivity of rectifier, we can redistribute the system energy, and improve system performance. Simulation results show that PBC method under unbalance grid voltage is practicable.

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Periodical:

Advanced Materials Research (Volumes 622-623)

Pages:

1503-1509

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.622-623.1503

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Online since:

December 2012

Authors:

Yu Ling Ma, Jiu He Wang, Hao Xiang

Keywords:

Passivity-Based Control, Positive Sequence, Unbalanced Grid-Voltage

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