Double Closed-Loop Control of the Three-Level Rectifier Based on Synchronous PI Current Decoupling

Abstract:

This paper analyzes the mathematical model of the three-level PWM rectifier in the three-phase stationary coordinate system and the two-phase synchronous rotating coordinate system. On this basis, the synchronous PI current double closed-loop decoupling control strategy is used to eliminate the impact between the d-q axis and relieve independent control of two axes. In order to simplify the complexity of the vector synthesis, the three-level space vector modulation (SVPWM) algorithm is studied. Transform the three-level space reference vector synthesis to the two-level. The mathematical model of the theoretical analysis are verified with Matlab/Simulink. The simulation result demonstrates that the design method is reasonable and effective, which makes the PWM rectifier excellent dynamic and static performance.

• Periodical: Applied Mechanics and Materials (Volumes 385-386)
• Pages: 1179-1183
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.385-386.1179
• Online since: August 2013
• Authors: Cheng Wu Lin, Tian Jiao Liu, Jun Gui
• Keywords: Rectifier, SVPWM, Synchronous PI Current Decoupling, Three-Level

References

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DOI: 10.1049/cp:20000284