A set of circuit analysis programs designed for the IBM 1620
computer (having 40,000 digits of memory) is described and its operation
is explained. The set consists of d-c, a-c, and transient analysis
programs.
The d-c and a-c analysis programs provide the branch current
and node-to-reference potential for linear circuits....
A system consisting of two d-c generators, one exiting the other,
is controlled with an EAI 690 hybrid computer in an on-line operation.
The hybrid computer works as a predictive controller with an on-off
actuating signal. A fast-time, second-order model is used to determine
the switching time, and a small...
A project funded by the Southern California Edison (SCE) Company, Research
Center of Irwindale, California, has supported the development of a performance and
parameter prediction software program for use during the refurbishment of large
synchronous machines, turbine generators, and synchronous condensers. The computer
program was developed for SCE to allow...
Delta-Sigma Modulator-based Analog-to-Digital converter design is an active area of research. New topologies require extensive simulations to verify their performance. A series of improvements were made to an existing circuit simulation package in order to speed the simulation process for the designer. Various examples of these improvements are presented in...
Real-time predictive voltage control of a direct-current (d-c)
generating system is achieved with the aid of a hybrid computer.
Some assumptions were required to adequately simplify the simulation
of the d-c generating system.
A predictive controller is used to maintain the load voltage of
the d-c generating system (the controlled...
Alternating-current thin-film electroluminescent (ACTFEL) devices are metal-insulator-semiconductorinsulator-
metal (MISIM) structures which emit light under high field, pulsed excitation. One aspect of ACTFEL operation that is not well understood is the aging of such devices with operating time. One of the primary goals of
this thesis is to characterize the kinetics...
The advent of superior power semiconductor devices and converter topologies
has renewed interest in ac drive systems. Although considerable research efforts have
gone into improving power electronic converter devices and topologies, very little has
been reported on the overall performance optimization of induction machine drive
systems. The report of the...
Brushless Doubly Fed Machines (BDFM) have potential advantages in variable
speed generation and adjustable speed drive applications. The most significant of these
advantages is a reduction in the power electronic converter rating, and therefore a
reduction in overall system cost. Presently, efforts are being directed at optimizing the
design of...