A GENERALIZED GO DNESS FUNCTION F AD VAN^^^
ELESTRICAL MACHINES FOR HYPERVELOCITY ~~CEL~RAT~RS
M. D. Driga
Professor, The IJniversity of Texas at Austin
Electrical and Computer Engineering Department
Austin, Texas 78712
ABSTRACT
A system of goodness functions and quality indicators for exploring the relative
merits of pulsed electrical machines or electromagnetic accelerators will have to be based
on a TY~O~QUS theoretical foundation, both from electromechanical and electrodynamical
points of view.
For electromechanical aspects, the general theory of electrical machines, together
with XronS tensorial formulations for transient and pulsed ,canversion lead to a quality
indicaiion CIS a "goodness factor" or "goodness function" generalized from steady state
to pulsed electrical machines and, further, to systems of machines (rotating pozoer
supply, self-excitation system, accelerator).
By using Maxwells equations for moving media and the notion of flux
derivative, three diferent formulations for eledromagnetic forces in electrical machines
are introduced and interrelated leading to an assessment for the electromagnetic recoil
and for the distribution of forces in air core and iron core advanced machines and
electroimgnetic accelerators.