Modelling and control of a new DC-side nonlinear series-type switching filter

This paper presents the analysis, modelling, and control of a new series-type hysteresis-controlled nonlinear high-frequency switching filter for the DC-side of AC/DC converters. The concept and principle of operation of the new DC-side nonlinear filter are described. System design equations are developed to model the relationship among circuit variables. A multi-loop closed-loop control is proposed to regulate the load current. The salient features of the proposed filter type are the reduced filter converter rating, and the reduced size of passive elements required. All analysis and control system design are verified with simulation.

[1]  D. A. Deib,et al.  Modelling and control of a new DC-side shunt-type nonlinear switching filter , 1996, Proceedings of Applied Power Electronics Conference. APEC '96.

[2]  G. Joos,et al.  A combined approach using phase-controlled rectifiers and high-frequency converters for magnet-load power supplies , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[3]  W.F. Praeg.  A High-Current Low-Pass Filter for Magnet Power Supplies , 1970, IEEE Transactions on Industrial Electronics and Control Instrumentation.

[4]  D. Wolff,et al.  Very High Precision Current Regulated Power Supplies for the Fermilab Antiproton Source , 1985, IEEE Transactions on Nuclear Science.

[5]  Shashi B. Dewan,et al.  A low ripple power supply for high current magnet load , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.

[6]  Geza Joos,et al.  DC-side shunt active power filter for phase-controlled magnet-load power supplies , 1994 .