Method for Detecting an Open-Switch Fault in a Grid-Connected NPC Inverter System
- 7 December 2011
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 27 (6), 2726-2739
- https://doi.org/10.1109/tpel.2011.2178435
Abstract
This paper proposes a fault-detection method for an open-switch fault in the switches of grid-connected neutral-point-clamped inverter systems. The proposed method can not only detect the fault condition but also identify the location of the faulty switch. In the proposed method, which is designed by incorporating a simple switching control in the conventional method, the fault condition is detected on the basis of the radius of the Concordia current pattern, and the location of the faulty switch can be identified. By using the proposed method, it is possible to detect the open-switch fault and identify the faulty switch within two fundamental periods, without using additional sensors or performing complex calculations. Simulations and experiments are carried out to confirm the reliability of the proposed fault-detection method.Keywords
This publication has 20 references indexed in Scilit:
- Hybrid PWM Strategy of SVPWM and VSVPWM for NPC Three-Level Voltage-Source InverterIEEE Transactions on Power Electronics, 2010
- Performance Improvement of LCL-Filter-Based Grid-Connected Inverters Using PQR Power TransformationIEEE Transactions on Power Electronics, 2009
- Selective Harmonic Elimination in Multimodule Three-Phase Current-Source ConvertersIEEE Transactions on Power Electronics, 2009
- A Literature Review of IGBT Fault Diagnostic and Protection Methods for Power InvertersIEEE Transactions on Industry Applications, 2009
- The age of multilevel converters arrivesIEEE Industrial Electronics Magazine, 2008
- Three-Level Converter Topologies With Switch Breakdown Fault-Tolerance CapabilityIEEE Transactions on Industrial Electronics, 2008
- A Fuzzy-Based Approach for the Diagnosis of Fault Modes in a Voltage-Fed PWM Inverter Induction Motor DriveIEEE Transactions on Industrial Electronics, 2008
- A New Fault Detection Technique for IGBT Based on Gate Voltage MonitoringPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Induction motor stator faults diagnosis by a current concordia pattern-based fuzzy decision systemIEEE Transactions on Energy Conversion, 2003
- Fault detection of open-switch damage in voltage-fed PWM motor drive systemsIEEE Transactions on Power Electronics, 2003