National Energy Wind Turbine Blade R&D Center

May 31, 2022 / Author by SONG Juanjuan Text SizeDBS

Research Fields

In the research field of wind energy utilization, investigation has been carried out centered around four key aspects:

Research on advanced design and test technology of large wind turbine blades

Research on large floating wind turbine technology

Research on innovative aerodynamic field of wind farm

Research on wind energy heat utilization technology

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

Novel aircraft engine with high thrust-to-weight ratio

Novel aircraft engine with wide speed range

Based on our original entropy generation minimized shock wave ram compressing theory, we developed contra-rotating ram compressor and vaneless counter-rotating turbine techniques. By successfully using these techniques, our engine team develops a shock-in type contra-rotating engine with a thrust-weight ratio of 20%-40% higher than traditional engines, and an engine can be operated without mode conversion in a wide Mach numbers range between 0 to 4.

Team Building

In 2021, 15 full-time staff members were recruited, 4 doctoral students and 3 postgraduates graduated. Currently, there are 51 stuff members, 15 of which have obtained senior professional title. There are 71 graduate students and 6 postdoctors.

Projects and Major Achievements

There are 66 undergoing projects in 2021, including 24 new projects.

In the research field of wind energy, research on systemic applied basic scientific issues related to wind energy absorption, conversion, and transmission, such as wind turbine blades, large floating wind turbine, and wind energy heat utilization has been carried out.

In the aspect of large wind turbine blades, bionic winglet, bionic serrated edge, sandwich structure and the research of segmented blades have been carried out. The first batch of commercial application of the bionic winglet units has been implemented. The optimization design method of the serrated edge structure has been developed to ensure the power generation increase as well as the noise reduction. The performance effect of the slot on the blade structure construction has been proved.

In the aspect of wind turbine blades test methods, the optimization method of biaxial fatigue load has been constructed, and the software of biaxial fatigue test optimization has been developed to realize the requirements of high precision in fatigue test.

In the aspect of large floating wind turbine technology, the experimental platform has been developed and verified by the integrated wind tunnel-pool test of floating wind power equipment in complex sea conditions. The aerodynamic, hydrodynamic, quality and structural similarity model design method has been broken through, and it has the capability of high-fidelity hydrodynamic and pneumatic testing of floating wind power equipment. The scale effect problem of the scaled model of the wind tunnel-pool test of floating wind power equipment has been solved, which provides technical support for the country’s first 6MW floating wind power equipment.

In the aspect of wind energy heat utilization, the key components (wide speed range compressor, intelligent control system) of 2 MW wind turbine heating system independently designed by IET have been successfully developed, and key technological breakthroughs such as integrated design, thermodynamic cycle optimization and intelligent control system of megawatt wind turbine heating system have been realized.

In terms of the engine, aiming at the development of a high thrust-to-weight ratio engine and the prototype of a wide-speed-range engine respectively, key technical research and verification work has been carried out.

In the aspect of a high thrust-to-weight ratio engine, after completing the idle test, the disassembling was completed in early 2021. Then malfunction analyses and charrettes were carried out; many optimization designs were conducted, and a number of researches were proceeded on engine improvement and test preparation.

In the aspect of the prototype of a wide-speed-range engine, the overall structural scheme of the engine and the design and review of some key components have been completed, and the processing and assembling of turbine test samples and some working conditions tests have also been completed.

In the aspect of the construction of the engine test platform, the No. 2 aerospace engine test platform for near-space environment simulation and whole engine verification, which supports the integrating assessment and verification of the new-principle wide-speed-range aerospace engine, adopted the “designing while purchasing, delivering while installing, installing while debugging” method, promoted side by side, and fully guaranteed the requirements of the whole engine test and verification.

Patents and Paper

In 2021, 31 academic papers were published, among which 26 were indexed by SCI and 5 indexed by EI. 23 patents proposals were applied and 11 patents were authorized.

 

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