Improvement of High-Power Three-Level Explosion-Proof Inverters Using Soft Switching Control Based on Optimized Power-Loss Algorithm

Figure 14

The comparative experiments of IGBT and diode’s characteristics.

(a) IGBT switch-on (NPC)

(b) IGBT switch-on (S3L)

(c) IGBT switch-off (NPC)

(d) IGBT switch-off (S3L)

(e) NPC diode reverse recovery

(f) S3L diode reverse recovery