The meatgrinder is a high-efficiency inductive energy storage
and transfer circuit which may be used to supply high-current
pulsed power requirements in applications such as
electromagnetic propulsion. It overcomes the inherent 25%
efficiency limit when transferring energy between uncoupled
inductors and simultaneously provides current multiplication.
An unloaded six-step demonstration circuit has been used to
multiply current from 7A to 76A at an efficiency of 44%, and a
single-step demonstration circuit has been used to multiply the
current in an uncoupled load induct or from lOA to 30A, the
efficiency of energy transfer being 31%. Both circuits use
power MOSFETs for switching.
These circuits have been used in conjunction with theoretical
analysis and computer simulation to study the design and
performance of the meatgrinder. Investigations have been
carried out in order to confirm the basic theory, to clarify the
details of circuit operation, and to provide the information
necessary for future feasibility studies.
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.