Closed-loop control on PMSG torque in direct-drive wind power generation system without speed sensor

2015 ◽  
Author(s):  
Shuying Yang ◽  
Leilei Guo ◽  
Liuchen Chang ◽  
Xing Zhang ◽  
Zhen Xie
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Closed Loop ◽  
Wind Power Generation ◽  
Closed Loop Control ◽  
Direct Drive ◽  
Generation System ◽  
Loop Control ◽  
Speed Sensor ◽  
Power Generation System

A Simulation System of Wind Turbine Based on Labwindows

2014 ◽  
Vol 530-531 ◽  
pp. 943-951
Author(s):  
Zhi Gang Hua ◽  
Guang Yu Hu ◽  
Zhi Gong Wu ◽  
Yong Jie Zhai ◽  
Yu Jia Huo
Keyword(s):  
Power Generation ◽  
Wind Turbine ◽  
Wind Power ◽  
High Efficiency ◽  
Wind Power Generation ◽  
System Structure ◽  
Stable Operation ◽  
Direct Drive ◽  
Generation System ◽  
Power Generation System

Wind energy is the worlds fastest growing renewable energy source in recent years, and it has drawn worldwide attention. Due to high efficiency, simple topology and stable operation, variable speed constant frequency (VSCF) direct-drive wind power generation system using permanent magnet synchronous generator (PMSG) is the development trend and one of the focuses of wind power generation system research. The paper introduces the trend of the development wind power generation and the recently research stage on the wind power generation. Based on the VSCF power fundamental principle, the dissertation analyzes the strategy of wind turbine simulation. In the development of wind power generating system, the wind turbine emulator becomes more and more important because it can provide controllable wind turbine characteristics. Simplified mathematical model based on the CT-λ curve is constructed, the system structure and emulation method are analyzing. Hardware and software are designed and implemented, and a laboratory set-up is building which based on DC motor. Experimental results show that the wind turbine emulator is as good as expected.

Gearless Continuously Variable Transmission Technology and its Application in Wind Power Generation

2014 ◽  
Vol 614 ◽  
pp. 145-150
Author(s):  
Jin Gui Qian ◽  
Si Jia Zhou ◽  
Ji Bao Huang ◽  
Ke Gang Zhao
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Engineering Application ◽  
Continuously Variable Transmission ◽  
Wind Power Generation ◽  
Direct Drive ◽  
Generation System ◽  
Constant Frequency ◽  
Variable Transmission ◽  
Power Generation System

Based on gearless continuously variable transmission technology, a cascaded wind power generation system with Variable Speed Constant Frequency (VSCF) is presented in this paper. The system has combined the advantages of doubly-fed and direct-drive wind power generation system. The raising-speed gear box has been done away with, and the system reliability has been improved. Reducing the power capacity of the aspects of the variable frequency speed regulation, the function of grid-connected electricity generation can be achieved with less cost. Synchronous generator directly connects to grid, which helps to optimize power quality. The topological structure of system is discussed in this paper, and its operating principle is analyzed, revealing its characteristics and engineering application prospects.

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