An Integral Design of Ground Power Unit Supply for Aircraft Applications

Rivera, Marco; Faundez, D.; Kolar, Johann W.; Wheeler, Patrick; Riveros, José A.; Toledo, Sérgio

doi:10.1109/esars-itec.2018.8607358

Cited by 5 publications

(2 citation statements)

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“…However, in the case of 400‐Hz, ground power unit system (GPU's) one sample delay effect cannot be ignored. For example, the phase delay by the one‐sample delay is 1.5° for a 50‐Hz inverter, whereas it is 12° for a 400‐Hz GPU for a sampling frequency of 12 kHz 12 …”

Section: Introductionmentioning

confidence: 99%

“…For example, the phase delay by the one-sample delay is 1.5 for a 50-Hz inverter, whereas it is 12 for a 400-Hz GPU for a sampling frequency of 12 kHz. 12 On the other hand, any long-term fault will cause catastrophic damage to the airplane, so any fault should be removed in a shorter time as much as possible. For instance, if the fault removal time is longer than 1 ms, the damaged phase angle of the output voltage waveform will be 144 in 400 Hz GPU, whereas it will be just 18 in 50 Hz power supplies.…”

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confidence: 99%

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Design and implementation of ground power unit using a three‐level fault‐tolerant neutral point clamped inverter

Abbaspour

Kojabadi

2022

Circuit Theory & Apps

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Due to the widespread use of static power converters in various industries and sensitive applications such as ground power units (GPUs), it is essential that the inverters have high reliability. A failure in the inverters can cause undesirable consequences such as low performance, shutting down the system, and losing the stability of the entire system. On the other hand, in some critical industrial processes with high standstill costs and safety‐aspect concerns, such as aircraft, high reliability, and survivability of the system, are very important. Therefore, the use of fault‐tolerant (FT) inverters is inevitable in such applications. In this paper, using a three‐level fault‐tolerant neutral point clamped (FT‐NPC) inverter, the reliability of the GPUs is increased and it results in higher availability and continuous system performance. Furthermore, a simple automatic fault detection (FD) algorithm is presented by taking the inverter pole voltage as a FD parameter. The inverter is analyzed for open‐circuit fault in the switches, and the reliability of the FT‐NPC inverter is compared with the classic inverter. The simulation and experimental results of the 2‐kVA converter prototype are presented to confirm the FT inverter performance and the proposed method.

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confidence: 99%

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confidence: 99%