scholarly journals Variable DC-Link Voltage Control of Dual Active Bridge Converter in a Standalone Wind Power Generation System for High-Efficiency Battery-Discharging Operation

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6786
Author(s):  
Yuto Takayama ◽  
Hiroaki Yamada
Keyword(s):  
Power Generation ◽  
High Efficiency ◽  
Power Conversion ◽  
Voltage Control ◽  
Wind Power Generation ◽  
Generation System ◽  
Dual Active Bridge ◽  
Power Generation System ◽  
Simulation Results ◽  
Peak Value

In this study, we deal with a dual active bridge (DAB) converter-based battery charger in a standalone wind power generation system (WPGS) with a small-scale wind turbine. However, the power conversion efficiency under the low power output in the discharging mode is low. In this paper, we propose variable DC-link voltage control in a standalone WPGS with a DAB converter under a light load. The proposed control can compensate for the shortage of generated power and suppress the peak value of the transformer current. Simulation results demonstrate that the proposed control can decrease the peak value of the transformer current and improve the power conversion efficiency of the DAB converter. An experimental setup was constructed to confirm the basic operation of the variable DC-link voltage control. In addition, a reference DC-link voltage switchover control is proposed to enable a high-efficiency drive under all load ranges. From simulation results, the power loss can be reduced by the switchover control of the reference DC-link voltage.

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.

Modeling and Simulation of the Brushless Double Rotor Motor for the Novel Wind Power Generation System

2013 ◽  
Vol 724-725 ◽  
pp. 491-494
Author(s):  
Lan Fang Fu ◽  
Hua Jun Wang ◽  
He Xu Sun
Keyword(s):  
Power Generation ◽  
Modeling And Simulation ◽  
Wind Power ◽  
Mathematic Model ◽  
Wind Power Generation ◽  
The Novel ◽  
Variable Speed ◽  
Generation System ◽  
Power Generation System ◽  
Simulation Results

A novel driver concept has been developed to meet the grid requirements. A regulation speed device was connected to a variable speed gearbox with a constant speed synchronous generator.A brushless double rotor motor based on a novel wind power generation system is proposed. The motors structure , principle and mathematic model are studied.The simulation results show that brushless double rotor motor is suitable as a regulation speed device to apply to the novel wind power generation system.

Pitch Angle Control Based Improved Cooperative Co-Evolution in Power Generation System

2012 ◽  
Vol 190-191 ◽  
pp. 1162-1165
Author(s):  
Qiang Wang ◽  
Jian Sun ◽  
Ling Yun Wang ◽  
Dao Zheng Liao
Keyword(s):  
Power Generation ◽  
Distribution Function ◽  
Evolutionary Algorithm ◽  
Pitch Angle ◽  
Pid Controller ◽  
Wind Power Generation ◽  
Control Performance ◽  
Generation System ◽  
Power Generation System ◽  
Simulation Results

In this paper, a new controller of the pitch angle of the wind turbine is designed based on improved cooperative co-evolutionary algorithm(ICCEA). The ICCEA is based on general co-evolution model, and can choose evolutionary algorithm for its subpopulations independently, and regulate the probabilities of individuals production to promote the speed of evolutionary according to the characteristic of control system by introducing distribution function. The simulation results demonstrate that the proposed controller can efficiently and steady control the output power of the wind power generation system. Compared with the traditional PID controller, the controller has better control performance.

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