Experimental comparison of digital implementations of single-phase PFC controllers

    Authors

    V. M. Rao; A. K. Jain; K. K. Reddy;A. Behal

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Ind. Electron.

    Keywords

    digital control; nonlinear control; power factor correction; POWER-FACTOR-CORRECTION; DYNAMIC-RESPONSE; CONTROL STRATEGY; RECTIFIER; CONVERTER; Automation & Control Systems; Engineering, Electrical & Electronic; Instruments & Instrumentation

    Abstract

    This paper presents the design and the digital implementation of three controllers for a single-phase power factor corrector (PFC). Based on an averaged system model, an adaptive nonlinear control strategy is first designed, followed by a digital redesign of the standard cascaded linear controller and a notch-filter-based variant. All three controllers have been verified via simulation in Simulink using a continuous time plant model and a discrete time controller. Real-time implementation is performed on an experimental testbed utilizing a rapid prototyping tool. The three controllers are experimentally compared for steady-state performance and transient response. It is shown that the nonlinear controller gives a better steady-state performance, whereas the linear strategy and the notch-filter-based variant have a faster dynamic response. Furthermore, although the notch-filter-based linear design shows promise in simulation, practical difficulties degrade its experimental performance. Performance metrics are tabulated for easy comparison.

    Journal Title

    Ieee Transactions on Industrial Electronics

    Volume

    55

    Issue/Number

    1

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    67

    Last Page

    78

    WOS Identifier

    WOS:000252256500008

    ISSN

    0278-0046

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