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

Figure 4

(a) No-fault current signal; (b) S1-open-circuit fault current signal; (c) S2-open-circuit fault current signal; (d) S3-open-circuit fault current signal; (e) S4-open-circuit fault current signal; (f) S1_S2-open-circuit fault current signal; (g) S1_S3-open-circuit fault current signal; (h) S1_S4-open-circuit fault current signal; (i) S2_S3-open-circuit fault current signal; (j) S2_S4-open-circuit fault current signal; (k) S3_S4-open-circuit fault current signal.

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