Accession Number : ADA331788

Title :   Practical Implementation of the Hard Switched Buck Chopper

Descriptive Note : Master's thesis

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Allen, Kirk D.

PDF Url : ADA331788

Report Date : MAR 1997

Pagination or Media Count : 138

Abstract : As the Navy progresses into the twenty-first century, new concepts in shipboard electrical power management are being explored. One area of significant interest to the Navy is utilization of DC electrical distribution systems rather than traditional AC distribution systems. The DC Zonal Electrical Distribution System is a prime candidate for direct application to modern power distribution. This system employs solid state conversion devices to supply ships loads from one of two high voltage DC busses. One such device, a buck chopper, is the focus of this thesis. In order to validate this proposed architecture, the startup and transient performance of these choppers must be explored. The buck chopper incorporates a control technique which employs both voltage and current feedback in conjunction with feed forward. Specific advantages of this control technique with the buck chopper circuit include power source perturbation rejection, fast dynamic response to both load and source voltage changes and a house curve for parallel buck chopper operation. The design will include both over current and thermal protection in order to prevent circuit component damage. The focus of this thesis is to validate the predicted operation of this control technique and to verify circuit performance.

Descriptors :   *DIRECT CURRENT, *ELECTRIC POWER DISTRIBUTION, *DC TO DC CONVERTERS, LOAD DISTRIBUTION, THESES, VOLTAGE, ALTERNATING CURRENT, SHIPBOARD, POWER SUPPLIES, STRIP TRANSMISSION LINES, NAVAL ARCHITECTURE, CIRCUIT ANALYSIS, LOAD CONTROL, SWITCHING CIRCUITS.

Subject Categories : Electrical and Electronic Equipment
      Electric Power Production and Distribution
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE