National Energy Wind Turbine Blade R&D Center

Jun 26, 2019 / Author by LUO Weiwei, SONG Juanjuan Text SizeDBS

Research Fields

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

■ 100 m-blade design and green manufacturing technology

■ Effectiveness evaluation system and Performance improvements technology for wind turbine blades in service

■ High efficiency, low cost and long life of the overall technical solutions to wind power heating and heat storage system

■ Integrated utilization design of wind and marine energy with independent intellectual property rights

In the research field of aero engine, investigation has been carried out centered around five key aspects:

■ General design technology of engine

■ Research on the new type compressor

■ Research on the counter-rotating turbine

■ Research on the short annular combustor

■ Research on the micro power system

Team Building

In the aspect of research team construction, the Center recruited 7 new staff in this year. Currently there are 35 faculty members, 14 of which have obtained senior professional title and 26 of which hold PhD degrees.

In the aspect of graduate education, currently there are 24 graduate students including 13 doctoral students and 11 postgraduates. Besides, there are 6 joint training postgraduates.

Projects and Major Achievements

In 2018, the Center received 6 projects of Science & Technology Committee Innovation Zone (CNY 16.9 million), 3 National Natural Science Foundation of China (CNY 0.73 million), 1 Chinese Academy of Sciences Instrument Research Project (CNY 0.5 million), 1 Chinese Academy of Sciences A Category Precursor Special Project (CNY 11.3 million), 3 co-operative businesses projects (CNY 2.79 million). The research funding amounts to CNY 32.22 million this year. Besides, the Center undertook another 25 projects and the research funding amounts to CNY 25.0166 million.

In the research field of wind energy, (1) The Center has performed the multi-objective optimization design technology, made the airfoil's maximum lift-to-drag ratio and aerodynamic noise total sound pressure level as the optimization target parameters to establish the airfoil optimization design model; The Center has combined the non-viscous-viscous strongly coupled iterative aerodynamic prediction method and semi-empirical noise prediction with an optimization algorithm to form a high performance, low noise airfoil optimization method.  (2) The evaluation of structural characteristics in the aerodynamic profile design has been introduced to analyze the characteristic frequency of the blade, and simulate the structural characteristics of the blade under static and dynamic loading conditions.

(3) The study of convex flow-induced velocity field and influence on the average and wave aerodynamic characteristics of the wind turbine has been carried out, which has proved that the concave-convex structure had better flow separation control effect. Also the modeling method based on the wing-fence model has been carried out.  (4) The center has completed the development of multi-system and multi-parameter synchronous measurement platform, and obtained the aerodynamic characteristic data during the actual operation of the blade for the first time in China. (5) The Center has employed energy level coupling method to establish the thermodynamic model of the new-type heating system based on the coupling of wind energy, solar energy and heat storage, and to form the coupling system design of the direct heating from wind energy, heat utilization from solar energy and phase change heat storage. The center has completed the demonstration of the heating project of the 30kW wind-heat unit and successfully operated the entire heating season.

In the research field of aero engine, the development and verification of key technology have been carried out which aims at the prototypes of a high thrust to weight ratio engine and a large flight envelope engine respectively. (1) In the aspect of engine performance and structure, overall performance prediction model has been established base on the compressor characteristics with bleeding on the rotor blade casing. High thrust to weight ratio engine's rotor axial force optimization method based on air system flow layout has been presented and the overall structure of the large flight envelope engine has been designed. (2) In the aspect of compressora novel design method for intermediate casing with small discrete vent distributed in circumferential direction has been developed, and the full performance tests for compressors(including 0-100% design speed) have been accomplished. The design method of low-loss shock waves has been established for large flight envelope compressors. (3) In the aspect of turbine, a method for improving the attack angle adaptability of counter-rotating low pressure rotors, which works at low rotation speed, has been proposed. Optimization design based on negative angle of attack method for multi-stage counter-rotating turbines has been completed. The matching ability between turbines and compressors at high Mach number flight condition is improved. (4) In the aspect of combustor, the predicting model of flow rate coefficient of simplex fuel nozzle has been developed .The allocating strategy of flow rates in primary stage and secondary stage of simplex fuel nozzle has been improved. The performance experiments of simplex fuel nozzle and combustor have been achieved. (5) In the aspect of control system, complete control logic and control parameters optimization design for the high thrust to weight ratio engine control system have been developed. Controller schematic and PCB diagram drawing and controller host computer software development have been accomplished. Controller hardware have been made and tested.

Patents and Paper 

In 2018, the Center had 21 scientific publications, which included 10 papers indexed by SCI and 11 by EI. 7 oral presentations and reports were given in international conferences. 17 patents proposals have been applied and 15 patents proposals have been authorized. 3 software copyrights have been authorized.

Awards

ZHANG Mingming won the second prize of Beijing Science and Technology Award, the second prize of China Electric Power Science and Technology Progress Award, and the first prize of the Energy Innovation Award of China Energy Research Association.

A turbine design method obtained the second prize of Chinese People’s Liberation Army Science and Technology Progress.

International Cooperation and Exchanges

There were 5 visits and communications in 2018. Dr. ZHANG Mingming and Dr. LI Qingan went to Japan for academic exchange and cooperation. Dr. ZHANG Ming Ming, Dr. ZHANG Lei and Dr. WU Gang Xing went to Italy to participate in the Torque2018 Wind Energy Conference and read out their papers respectively on the conference. The titles are “Flow Physics behind the Effect of Leading-edge Protuberances on the Airfoil Aerodynamic Performance within Wind Industry”, “An integrated numerical method for wind turbine flow simulation, sound generation and propagation” and “An Aero-Structural Field Test from IET in China” respectively. Dr. ZHANG Kai went to America to participate AIAA Symposium of Energy Power and read out his paper titled with “Research on transient vibration response of rotor system using supporting stiffness active control”. 

Dean:  ZHAO Qingjun    Tel: 86-10-82543047   E-mail: zhaoqingjun@iet.cn 

Deputy Dean:  ZHANG Mingming    Tel: 86-10-82543037   E-mail: mmzhang@iet.cn  

 

Hoisting of Wind Turbine Blade for Aero-Structural Field Test 

The Dual-Axis Counter-Rotating and Dual-Bypass Compressor Experiment Device 

 
 
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