Model-Based H-infinity Control of a Unified Power Quality Conditioner

作者：Kwan Kian Hoong^*; Chu Yun Chung; So Ping Lam

来源：IEEE Transactions on Industrial Electronics, 2009, 56(7): 2493-2504.

DOI：10.1109/TIE.2009.2020705

• Active filter
• harmonic compensation
• H-infinity loop shaping
• Kalman filters
• multivariable regulator
• power quality (PQ)
• unified PQ conditioners (UPQCs)

This paper presents a solution to the control of a unified power quality (PQ) conditioner (UPQC) for PQ improvement in power distribution systems. The problem formulation allows not only harmonic compensation but also voltage sags/swells, load demand changes, and power factor correction to be tackled in a unified framework. The proposed controller combines the multivariable regulator theory with H. loop shaping, so that zero steady-state error, robustness to modeling uncertainties, and insensitivity to supply frequency variations can be accomplished simultaneously, thus providing a complete theoretical solution to all the aforementioned PQ problems. The effectiveness of the proposed controller is, in practice, verified by experimental studies on a single-phase power distribution system.

• 出版日期2009-7
• 单位南阳理工学院