Open-Circuit Fault Research on Asymmetric Delta-Polygon 18-Pulse Autotransformer Rectifier Unit for More Electric Aircraft

Yang, Chao; Zhang, Fanghua; Cheng, Long; Zhang, Zhaorong

doi:10.1109/tpel.2022.3189502

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…The diodes Due to the low ratio of diode on-off, off-off and cut-off loss, only the on-state power losses of the diodes is included for simplified analysis. Combined with literature [34], the formula for calculating diode on-state loss can be expressed as In formula (30), I av is the average value of the current flowing through the one diode and R d is the equivalent internal resistance of the diode, assuming R d = 0.001∧and U d = 0.8 V. Considering the working modes of HAC, it can be seen that the on-state angle of Dv1 and Dv2 within a cycle of 2ß is (ß∕2 − 6𝛿), and the corresponding average current I av1 is calculated as 0.006I o from Figure 7. Hence, the loss P Diode1 of Dv1 and Dv2 can be calculated as…”

Section: 13mentioning

confidence: 99%

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A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

Wang

Chen

et al. 2023

IET Power Electronics

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In this study, a new 36‐pulse rectifier with a hybrid DC‐reinjection circuit is proposed. It multiplies the AC‐side input voltage steps from 12 to 36 using a hybrid auxiliary circuit for voltage and current modulation. Both the AC and DC side harmonics of the rectifier system are efficiently suppressed when combined with filter capacitors at DC side. Only 2 more diodes and an IGBT are used in the proposed approach for constituting the injection circuit. The cascaded structure of rectifier bridges allows for significant voltage gain, making it appropriate for high power output rectification applications. The proposed 12‐pulse rectifier's phase shifting structure and 36‐pulse rectifier's operational theory are introduced. The injection transformer's turn ratio and the IGBT's conduction angle are both designed to have the lowest possible harmonic distortion of the voltage at AC side. Analyses are done on the rectifier's impedance matching feature and energy loss of IGBT. The operating performance of the rectifier is assessed when the active switch fails. With the help of a 1.8 kW prototype and a HIL system based on Starsim, the theoretical portion is confirmed. The results of the simulation and experiments support the effectiveness of the hybrid voltage harmonic injection method studied.

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Section: 13mentioning

confidence: 99%

“…Moreover, due to active switches in hybrid harmonic injection methods, the rectifier often faces faults caused by overvoltage and overcurrent impact. Currently, the fault analysis of MPRs mainly focuses on the diode open circuit fault [30][31][32]. Nevertheless, the short circuit fault of the switch also needs to be considered.…”

Section: Introductionmentioning

confidence: 99%

A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

Wang

Chen

et al. 2023

IET Power Electronics

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A novel method based on the SCNGO‐ICEEMDAN and MCNN‐BiLSTM model for fault diagnosis of motor bearings for more electric aircraft

Yuan,

Liu,

Yin

et al. 2024

IET Electric Power Appl

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The fault signal characteristics of motor rolling bearings for more electric aircraft are easily masked by strong background noise. Directly using machine learning, deep learning, or other methods results in a lower accuracy in fault recognition. In this article, a Northern Goshawk algorithm using a fusion subtraction optimiser and Cauchy strategy (SCNGO) is proposed to optimise the number of white noise additions and amplitude weights in the improved full set empirical mode decomposition method based on adaptive noise (ICEEMDAN). Then, a multi‐scale convolutional neural network (MCNN) is used to extract the time–frequency domain features of the de‐noised signal and perform information fusion. Finally, the bidirectional long short‐term memory network (BiLSTM) was used to learn the faults' fusion features and complete the faults' recognition at different speeds. The research results show that the SCNGO‐ICEEMDAN and MCNN‐BiLSTMT model shows significant advantages in bearing fault recognition with an average recognition accuracy of 98.67% at various speeds.

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Open-Circuit Fault Diagnosis of More Electric Aircraft Static Inverter Based on Sliding Mode Observer

Zhang

2023

2023 IEEE 6th International Electrical and Energy Conference (CIEEC)

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Open-Circuit Fault Research on Asymmetric Delta-Polygon 18-Pulse Autotransformer Rectifier Unit for More Electric Aircraft

Cited by 5 publications

References 25 publications

A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

A novel method based on the SCNGO‐ICEEMDAN and MCNN‐BiLSTM model for fault diagnosis of motor bearings for more electric aircraft

Open-Circuit Fault Diagnosis of More Electric Aircraft Static Inverter Based on Sliding Mode Observer

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