System and method for power conversion

摘要

A converter (200) includes a first converter module (222) and a second converter module (224) coupled to the first converter module (222) in a nested manner. Each of the first converter module (222) and the second converter module (224) includes a plurality of switch units (228, 232, 234, 236; 238, 242, 244, 246). When the converter is operated to perform power conversion, at least two of the plurality of switch units is configured to be switched both in a complementary pattern and a non-complementary pattern.