Phase Open Fault Tolerant Control of High Reliability Doubly-Salient Wound-Field Machine
Abstract: Doubly Salient
Wound-Field Machine (DSWFM) can be employed on aeronautics starter-generator
because it has good performance on both power generation and starting. To
improve the system reliability, a three-phase four bridge legs converter which
has fault tolerant capability is proposed to solve one phase open-circuit fault
problem of the DSWFM. And the advantage of the proposed converter to the
full-bridge converter fault-tolerant mode is analyzed. With the study of DSWFM
theory and torque equation, a constant torque fault-tolerant strategy is proposed
to keep the performance and reduce the torque ripple. The drive system after
fault identification can be reconstructed by the proposed method, and the
machine performance can recover quickly. Simulations confirm the feasibility of
the proposed fault tolerant system.
Author: Liwei Shi, Bo Zhou
Journal Code: jptkomputergg140048
