Repository logo
 
No Thumbnail Available
Publication

Detection and diagnosis solutions for fault-tolerant VSI

Use this identifier to reference this record.
Name:Description:Size:Format: 
Detection and diagnosis.pdf727.65 KBAdobe PDF Download

Advisor(s)

Abstract(s)

This paper presents solutions for fault detection and diagnosis of two-level, three phase voltage-source inverter (VSI) topologies with IGBT devices. The proposed solutions combine redundant standby VSI structures and contactors (or relays) to improve the fault-tolerant capabilities of power electronics in applications with safety requirements. The suitable combination of these elements gives the inverter the ability to maintain energy processing in the occurrence of several failure modes, including short-circuit in IGBT devices, thus extending its reliability and availability. A survey of previously developed fault-tolerant VSI structures and several aspects of failure modes, detection and isolation mechanisms within VSI is first discussed. Hardware solutions for the protection of power semiconductors with fault detection and diagnosis mechanisms are then proposed to provide conditions to isolate and replace damaged power devices (or branches) in real time. Experimental results from a prototype are included to validate the proposed solutions.

Description

Keywords

Converter redundancy Fault detection Fault-tolerant inverter Fault protection IGBT Failure VSI

Citation

Research Projects

Organizational Units

Journal Issue

Publisher

Korean Inst Power Electronics

CC License

Altmetrics