Masters Theses


Wenbin Li


"Time-domain simulation plays a large part in the design and analysis of power systems. Given the expanding needs of circuit system design packages, it is of the utmost importance to have computationally efficient methods of time-domain simulation available. This thesis describes the development and application of the multi-rate numerical integration techniques for the dynamic simulation of power-electronic-based systems (DCZEDS) that are composed of AC power supply, DC power distribution, and propulsion load subsystems with different time scales.

In this project, the multi-rate algorithm is implemented on the DCZEDS power system with two-time scales. Various implementation strategies are discussed to increase the efficiency of the algorithm. These include partitioning strategies for initial adaptive partitioning of the differential variables and extrapolation/interpolation guides to account for the coupling between these two-time scale partitions. The basic multi-rate algorithm is described and several results pertaining to the numerical convergence, stability, and accuracy of the method are presented. The multi-rate algorithm is shown to be computationally efficient when used to simulate systems in which the fast subsystems are a small portion of the system as a whole. The accuracy of the multi-rate algorithm is preserved by choosing integration step sizes according to the local truncation error for the different state variables"--Abstract, page iii.


Crow, Mariesa L.

Committee Member(s)

Pekarek, Steven D.
Stanek, Keith


Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering


University of Missouri--Rolla

Publication Date

Fall 2003


xi, 53 pages

Note about bibliography

Includes bibliographical references (pages 51-52)


© 2003 Wenbin Li, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Power electronics
Time-domain analysis

Thesis Number

T 8429

Print OCLC #


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