Double Closed-Loop Control Method for Injection-Type Hybrid Active Power Filter

Injection-type hybrid active power filter (IHAPF) shows great promise in reducing harmonics and improving power factor with a relatively low capacity active power filter (APF), but suffers from fundamental current circulation that inadvertently impacts the compensation performance and stability of the IHAPF. In this paper, the control model of IHAPF is established first, and then the origin and harm of fundamental current circulation are analyzed. To solve this problem, a double closed-loop control method is proposed. In the double closed-loop control scheme, the outer control loop based on injection harmonic current detection is used to eliminate load harmonic current, while the inner control loop based on APF output current detection is used to ensure the secure operation of IHAPF. The new control method is compared to other IHAPF control methods. It is implemented in a 100-kVA IHAPF in the laboratory. Both simulation and experimental results show that the new double closed-loop control method is not only easy to implement, but also very effective in reducing harmonics. The fundamental current circulation issue was also resolved with the new design.

[1]  G. Chang,et al.  A new approach for optimal shunt active power filter control considering alternative performance indices , 2006, IEEE Transactions on Power Delivery.

[2]  S. Fukuda,et al.  Application of a sinusoidal internal model to current control of three-phase utility interface converters , 2005 .

[3]  H. Stemmler,et al.  Stationary frame generalized integrators for current control of active power filters with zero steady state error for current harmonics of concern under unbalanced and distorted operation conditions , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[4]  Hirofumi Akagi,et al.  Control and performance of a fully-digital-controlled shunt active filter for installation on a power distribution system , 2002 .

[5]  An Luo,et al.  Development of Hybrid Active Power Filter Based on the Adaptive Fuzzy Dividing Frequency-Control Method , 2009, IEEE Transactions on Power Delivery.

[6]  L. Gyugyi,et al.  Active ac power filters , 1976 .

[7]  O. Vodyakho,et al.  Three-Level Inverter-Based Shunt Active Power Filter in Three-Phase Three-Wire and Four-Wire Systems , 2009, IEEE Transactions on Power Electronics.

[8]  Asheesh K. Singh,et al.  A simple fuzzy logic based robust active power filter for harmonics minimization under random load variation , 2007 .

[9]  Ping Lam So,et al.  Adaptive neural network control of active filters , 2005 .

[10]  Li Tao,et al.  A DSP-based active power filter for low voltage distribution systems , 2008 .

[11]  S. Mishra,et al.  TS-fuzzy-controlled active power filter for load compensation , 2006, IEEE Transactions on Power Delivery.

[12]  Z.J. Shen,et al.  Design Considerations for Maintaining DC-Side Voltage of Hybrid Active Power Filter With Injection Circuit , 2009, IEEE Transactions on Power Electronics.

[13]  F. Blaabjerg,et al.  Application of Discontinuous PWMModulation in Active Power Filters , 2008, IEEE Transactions on Power Electronics.

[14]  Taotao Jin,et al.  One-cycle control of three-phase active power filter with vector operation , 2004, IEEE Transactions on Industrial Electronics.

[15]  J. H. Marks,et al.  Predictive transient-following control of shunt and series active power filters , 2002 .

[16]  Wei Zhao,et al.  A Novel Three-Phase Hybrid Active Power Filter With a Series Resonance Circuit Tuned at the Fundamental Frequency , 2009, IEEE Transactions on Industrial Electronics.

[17]  P.L. Chapman,et al.  Dead-Time Distortion in Generalized Selective Harmonic Control , 2008, IEEE Transactions on Power Electronics.

[18]  M. Kumazawa,et al.  Development of active filter with series resonant circuit , 1988, PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.

[19]  An Luo,et al.  Combined System for Harmonic Suppression and Reactive Power Compensation , 2009, IEEE Transactions on Industrial Electronics.

[20]  Prasad Enjeti,et al.  A new hybrid active power filter (APF) topology , 2002 .