After the electric propulsion system provided by SES-Tech’s "Huadian wenqiang "self-elevating offshore wind turbine maintenance vessel was delivered and received unanimous praise from the shipyard and shipowner, with the trust and support of customers, SES-Tech once again undertook the succession of Hengtong Marine Group The second order after "Huadian wenqiang "self-elevating offshore wind turbine maintenance vessel-"Yihang Hengtong Offshore Wind Power Operating Platform Electric Propulsion System" order.

Yihang Hengtong offshore wind power work platform has a total length of 120.5 meters, a profile width of 38 meters, and a profile depth of 6.8 meters. It is a wind power work platform integrating installation and maintenance of "wind power foundation construction, wind power towers, towers, nacelles, hubs, and blades" . The platform has two 600kW at the bow and two 1300kW azimuth rudder propellers at the stern, which are used for offshore wind farms including foundation installation, tower, nacelle, and blade hoisting.

This project uses the active front-end (AFE) domestically-made marine electric propulsion inverter independently developed by SES-Tech, and the variable-frequency electronic control equipment independently developed by SES-Tech is used. SES-Tech’s variable frequency electric control equipment has three classification societies type certifications: CCS, RINA, and BV, and has been widely used in DC grid power propulsion, AC grid power propulsion, shaft hybrid power and shore power variable frequency power supply scenarios , This wind power installation platform is the second application of domestic frequency conversion in the offshore wind power field.