Innovation behind E-Flex concept
The E-Flex concept is described as a new generation of Ropax vessels focusing on energy efficiency and flexibility.
As reported elsewhere in MJ, Stena Edda, the second next generation vessel of Stena’s E-Flexer series, had her ‘float out’ ceremony on 15th April 2019 at AVIC Weihai Shipyard, China.
The modular designed WE Drive (Variable Frequency Drive) enables efficient, flexible and economical power distribution. In Power Take Out (PTO) mode, the propulsion machinery operates in combinator/variable speed mode via WE Drive, while the shaft generator provides the vessel’s electric network with considerable electrical power that results in variable speed and optimised efficiency of the Main Engine.
The Efficient Power Distribution solution utilises the common DC-link to distribute power in energy efficient and economical ways. Large electrical consumers such as thruster or large compressors can have their dedicated Inverter Units (INU) connected directly to the common DC-LINK. The solution also enables efficient power distribution and controlled short circuit currents, which allows lighter switchboards in marine installations.
“AVIC is always willing to cooperate with international companies, such as WE Tech Solutions, to reach a win-win situation. The combination of WE Tech’s reliable solutions and AVIC’s mature shipbuilding technology brings the most energy efficient ships to the sea. We strongly believe that WE Tech’s innovative and proven technology will lead and further develop the shipping industry”, comments Mr Hongbing Liao, the CEO of AVIC International Ship Development (China) Ltd.
By Jake Frith
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