HD33 series products are designed based on HV-IGCT device platform, the whole machine adopts NPC three-level technology medium-voltage high-power water-cooled inverter, meets the two/four-quadrant applications, compatible with synchronous and asynchronous machine control, supports a variety of transmission forms such as single-machine drive and multi-machine drive, it is a high-performance vector-type frequency inverter positioned in the high-end transmission applications, which is widely used in metallurgy mills, mine elevators,It is widely used in metallurgical mills, mine elevators, ship propellers and other high-precision and high-response applications.