Open-Circuit Fault Analysis and Recognition in Three-Level Inverters Based on Recurrence Plot and Convolution Neural Network

Figure 5

URP of the current signal and current signal. (a) No-fault current signal. (b) URP of the no-fault current signal. (c) S1-open-circuit fault current signal. (d) URP of S1-open-circuit fault current signal. (e) S3-open-circuit fault current signal. (f) URP of S3-open-circuit fault current signal. (g) S1_S2-open-circuit fault current signal. (h) URP of S1_S2-open-circuit fault current signal. (i) S1_S3-open-circuit fault current signal. (j) URP of S1_S3-open-circuit fault current signal. (k) S3_S4-open-circuit fault current signal. (l) URP of S3_S4-open-circuit fault current signal.

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