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

Table 2

Commutation processes of S3L inverter.

Load current is positive			Load current is negative
Commutation	Allowed	Involved	Commutation	Allowed	Involved
→ ,	YES		→ ,	YES
, →	YES		, →	YES
, →	YES		, →	YES
→ ,	YES		→ ,	YES
→	NO	—	→	NO	—
→	NO	—	→	NO	—