The engine manufacturer Everllence has signed a cooperation agreement with ABB and OceanWings. The aim of the cooperation is to develop an optimized drive concept for future LNG carriers.
The concept is based on the “DFE+” system (diesel-electric drive with variable speed) developed by Everllence and ABB. It enables high efficiency even in partial load operation, offers flexibility thanks to multiple motors and allows the integration of sustainable energy sources such as batteries and fuel cells.
The focus is on the combination with the Wind-Assisted Propulsion Systems (WAPS) from OceanWings. The rigid wingsails have an adaptive trimming system that continuously adjusts the sail position to the aerodynamic conditions. According to COO Romain Grandsart, their use on LNG carriers is particularly suitable as they spend a large part of their operating time at sea.
“LNG carriers travel fast and usually spend 70% of their time at sea. This is ideal for utilizing the wind and the full potential of the rigid OceanWings sails. Combined with an optimized propulsion system, including the DFE+ concept with high-efficiency speed control, double-digit fuel savings and a reduction in greenhouse gas emissions can be achieved – all while managing the boil-off gas,” explained Grandsart.
ABB emphasizes the flexibility of the hybrid electric drive, which can be ideally complemented with variable wind power. Everllence also points to the precise load control of the DFE+ system, which enables efficient integration even in fluctuating wind conditions.
The cooperation is initially focusing on an LNG carrier concept. Further applications in the freight segment are planned in the future – particularly for ships with long operating profiles, large deck space and high flexibility requirements. The partners expect significant savings in operational and investment costs (OPEX and CAPEX) for future newbuilds.
