Control principles of current source inverter DC terminal voltage in direct-drive wind power generation system

2009 ◽  
Author(s):  
Hongyuan Liu ◽  
Ping Wang ◽  
Zhen Wang
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Current Source ◽  
Wind Power Generation ◽  
Direct Drive ◽  
Generation System ◽  
Current Source Inverter ◽  
Terminal Voltage ◽  
Power Generation System

scholarly journals Modified Grid-Connected CSI for Hybrid PV/Wind Power Generation System

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
D. Amorndechaphon ◽  
S. Premrudeepreechacharn ◽  
K. Higuchi ◽  
X. Roboam
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Current Source ◽  
Wind Power Generation ◽  
Generation System ◽  
Unity Power Factor ◽  
Current Source Inverter ◽  
Power Conditioner ◽  
Power Generation System ◽  
System Configurations

The principle of a power conditioning unit for hybrid PV/wind power generation system is proposed. The proposed power conditioner is based on the current source inverter (CSI) topology. All energy sources are connected in parallel with a DC-bus through the modified wave-shaping circuits. To achieve the unity power factor at the utility grid, the DC-link current can be controlled via the wave-shaping circuits with the sinusoidal PWM scheme. In this work, the carrier-based PWM scheme is also proposed to minimize the utility current THD. The power rating of the proposed system can be increased by connecting more PV/wind modules through their wave-shaping circuits in parallel with the other modules. The details of the operating principles, the system configurations, and the design considerations are described. The effectiveness of the proposed CSI is demonstrated by simulation results.

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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