A Multi-functional Converter Electrical Tests System Scheme and Research in Its Digital Simulation

As the increasingly prominent environmental problems caused by energy development and the urgent need for high-quality power supply, renewable energy and DC distribution network technologies have been rapidly developed. A large number of applications of converter products will inevitably become a development trend. The test technology of converters should also receive more attention. This paper designs a scheme of multi-functional converter electrical tests system based on full/half bridge hybrid MMC technology, and verifies the feasibility of its function based on digital simulation. It can conveniently meet the electrical test requirements of DC/DC converters, DC/AC and AC/DC converters (single-phase and three-phase). And based on its own characteristics, it can meet the test requirements of unidirectional converter and bidirectional converter.