National Energy Wind Turbine Blade R&D Center

In the research field of wind energy utilization, investigation has been carried out on three key aspects:

■ Advanced design and test technology of large wind turbine blades

■ Large floating wind turbine technology

■ Wind energy heat utilization technology

 

 In the research field of aero engine, research is carried out from the following two areas:

■ Novel aircraft engine with high thrust-to-weight ratio

■ Novel aircraft engine with wide speed range

There are 64 undergoing projects in 2022, including 19 new projects.

 

In the aspect of large wind turbine blades test methods, the damage modes and the theoretical failure model of composite materials were proposed. The two degrees of freedom fatigue test technology research and load optimization were carried out. The sensor reliability model was developed and the technology innovation of an advanced sensor network of large blades test system is implemented by utilizing big data analysis technology.

 

In the aspect of large floating wind turbine technology, the adaptive wake analytical model under different turbulent environments was established. The high-precision simulation of wake effect of floating wind turbine was realized. The unsteady aerodynamic performance and flow field structure of floating wind turbine were studied to reveal the mechanism of dynamic stall and dynamic wake under complex motion conditions. A new similarity criterion and model design method of wind tunnel experimental were proposed to complete the similarity verification of the dynamic aerodynamics of the model and prototype wind turbines.

 

In the aspect of wind energy thermal utilization, a simulation model of wind-to-heat unit reflecting the coupling relationship between multi-system operations was constructed, and the dynamic performance acquisition of key components and the verification of model accuracy were completed. The optimal design direction and thermodynamic cycle optimal adjustment direction of the key components in the wind-to-heat unit under fluctuating input conditions were obtained. The slide valve control strategy optimization and control program development of the simulation model for megawatt-scale wind-to-heat unit were completed, which realizes the real-time responses from dynamic inputs of wind turbine and loads of heat pump cycle.

 

In the aspect of advanced propulsion systems, research and development have been carried out with the goal of developing new principles for high thrust-toweight ratio engine and wide speed range engine, and key technology research and verification work have been conducted.

 

With regards to the development of a new principle high thrust-to-weight ratio engine, ground-based testing of the improved engine design has been completed, achieving the design speed and thrust.

 

For the development of a new principle wide speed range engine, detailed design and testing of key components have been completed, and currently, the overall engine integration is underway. Regarding the construction of the engine test platform, debugging of each system's individual equipment and subsystems has been completed, and it has entered into the joint debugging stage.