A Carrier-Based PWM for Three-Level T-Type Inverter to Tolerate Open-Circuit Fault
| Autor: | Yue-Ting Tsai, Meng-Ying Yang, Bing-Feng Li, Tzung-Lin Lee |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
Open-circuit voltage 020209 energy Low-pass filter 020208 electrical & electronic engineering Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Fault (power engineering) law.invention Capacitor law Control theory Modulation 0202 electrical engineering electronic engineering information engineering Inverter Electrical and Electronic Engineering Space vector modulation Pulse-width modulation Voltage |
| Zdroj: | IEEE Transactions on Power Electronics. 33:8787-8796 |
| ISSN: | 1941-0107 0885-8993 |
| Popis: | This paper investigates the open-circuit faults of switching devices in the three-level T-Type inverter and proposes a new tolerant control method. The three-phase current and variation of the neutral-point voltage are detected to determine the fault switch. A carrier-based pulse width modulation is developed to tolerate switch fault by transiting from three-level to two-level switching. This makes the modulation scheme easier to be implemented compared to space vector modulation. For the neutral-point fault, the fault phase is operated by two-level modulation to produce the same rating voltage. On the other hand, the inverter is able to produce balanced voltage with reduced rating by keeping the phase of half-bridge fault to the neutral-point voltage. The neutral-point voltage is also able to be balanced by using two-level modulation since it does not contribute the neutral-point current. The performance and effectiveness of the proposed tolerant control are verified by a laboratory build. |
| Databáze: | OpenAIRE |
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