Flywheel based AC power conditioning system using a matrix converter.

摘要

AC power conditioning is becoming an important constituent technology in delivering clean power to sensitive industrial processes. This thesis is focused on introducing a novel architecture for power, conditioning that includes a flywheel for energy storage and a matrix converter for power conversion.; Series and shunt approaches for ac power conditioning are critically evaluated to establish the superiority of series approach to mitigating voltage sag problems in industrial power systems, followed by an evaluation of various energy storage devices that may be applied. The choice of a flywheel driven by a permanent magnet ac machine for energy storage naturally favors a matrix converter for ac to ac power conversion.; A detailed design oriented analysis of the topological and commutation properties, steady state power transfer, modulation process and averaged dynamics for the matrix converter are developed in this thesis. The models are used in designing a suitable control system for the flywheel based power conditioning system. Criterion for avoiding potential instabilities arising from the system interactions is provided. Computer simulation models have been used to verify the analytical results and the overall system has been demonstrated in a laboratory scale experimental test-bed.