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Switch Open-Fault Detection for a Three-Phase Hybrid Active Neutral-Point-Clamped Rectifier
| Content Provider | MDPI |
|---|---|
| Author | Kim, Sang-Hun Kim, Seok-Min Park, Sungmin Lee, Kyo-Beum |
| Copyright Year | 2020 |
| Description | This paper proposes a fault-detection method for open-switch failures in hybrid active neutral-point-clamped (HANPC) rectifiers. The basic HANPC topology comprises two SiC-based metal-oxide-semiconductor field-effect transistors (MOSFETs) and four Si insulated-gate bipolar transistors (IGBTs). A three-phase rectifier system using the HANPC topology can produce higher efficiency and lower current harmonics. An open-switch fault in a HANPC rectifier can be a MOSFET or IGBT fault. In this work, faulty cases of six different switches are analyzed based on the current distortion in the stationary reference frame. Open faults in MOSFET switches cause immediate and remarkable current distortions, whereas, open faults in IGBT switches are difficult to detect using conventional methods. To detect an IGBT fault, the proposed detection method utilizes some of the reactive power in a certain period to make an important difference, using the direct-quadrant (dq)-axis current information derived from the three-phase current. Thus, the proposed detection method is based on three-phase current measurements and does not use additional hardware. By analyzing the individual characteristics of each switch failure, the failed switch can be located exactly. The effectiveness and feasibility of the proposed fault-detection method are verified through PSIM simulations and experimental results. |
| Starting Page | 1437 |
| e-ISSN | 20799292 |
| DOI | 10.3390/electronics9091437 |
| Journal | Electronics |
| Issue Number | 9 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-09-03 |
| Access Restriction | Open |
| Subject Keyword | Electronics Energy and Fuel Technology Ac-dc Rectifier System Active Neutral-point-clamped Inverter Open-switch Fault Current Vector Angle Reactive Current Injection Fault Detection Method |
| Content Type | Text |
| Resource Type | Article |
