Simulation of current mode control schemes for power factor correction circuits

Pal, Subarna (1998) Simulation of current mode control schemes for power factor correction circuits. Masters thesis, Memorial University of Newfoundland.

[English] PDF (Migrated (PDF/A Conversion) from original format: (application/pdf)) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (12MB) [English] PDF - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. (Original Version)

Abstract

This thesis deals with a comparative study of the features of constant frequency and variable frequency current control schemes for power factor correction in AC-DC converter circuits. -- Various current control schemes for achieving nearly unity power factor at the input and to minimize the total harmonic distortion (THD) are in use in various applications such as television, radio receivers, AC-motor drives, DC-motor drives and uninterruptible power supplies (UPS). -- Analytical models of Constant Frequency Continuous Current (CFCC), Constant Frequency Discontinuous Current (CFDC), Zero-Current Zero-Voltage Switching (ZCS-ZVS) and Variable Current Hysteresis Control (VCHC) are developed and used to evaluate the performance of the power factor correction circuit. The main features of these control schemes are highlighted and the performance characteristics are obtained through computer simulation for the same circuit conditions. Design examples of each control scheme, and power loss calculation associated with the active switching device are also provided. It is shown that active current waveshaping through constant and variable frequency control schemes posseses many attractive features.

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