Publication Detail

Improved Methodology for Sizing of Naval Electrical Power Plants

James J. McGlothin
140 pp.

Electrical power plants onboard ships of the United States Navy have traditionally been sized according to empirical methods. These methods have resulted in satisfactory plants but have not been updated to reflect recent improvements in equipment and analysis methods. Developing technologies under consideration for future ships, particularly integrated electric propulsion with propulsion derived ships service electrical power, will bring significantly different demands f6r electrical power. There is very little recent design
experience to fall back on when designing.a ship employing such technologies. In addition, current fiscal restraints demand that excess equipment and capacity be severely restricted in order to minimize procurement costs, manning, and maintenance costs. A methodology is proposed to evaluate electric plant configurations (i.e. number
and sizes of generating units) in terms of the probability that the required loads can be supplied. The alternatives can ten be compared in terms of cost, weight, number of units, and total installed capacity to determine which is most cost effective. The methodology has been coded into a program which can be used to easily do the system comparisons. Several shipboard systems are analyzed to demonstrate the usefulness of the program.

type: Full theses / dissertations

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