Voltage Control Method of Isolated Wind Power System

2020 ◽  
pp. 361-371
Author(s):  
Gyana Ranjan Biswal ◽  
Banaja Mohanty
Keyword(s):  
Power System ◽  
Wind Power ◽  
Control Method ◽  
Voltage Control ◽  
Wind Power System

Control for Dc-Bus Voltage Using Grid Voltage Feed-Forward and Crowbar Circuit

2013 ◽  
Vol 448-453 ◽  
pp. 1727-1731
Author(s):  
Xi Yun Yang ◽  
Li Xia Li ◽  
Ya Min Zhang
Keyword(s):  
Power System ◽  
Wind Power ◽  
Output Power ◽  
Control Method ◽  
Direct Drive ◽  
Grid Voltage ◽  
Wind Power System ◽  
Dc Bus ◽  
Bus Voltage ◽  
Grid Side

The DC bus voltage is key variable for the operation of converter system in a wind power system. When grid voltage drops, a control of the DC bus voltage is needed to keep the smoothness of DC bus voltage for avoiding generator cutting off grid. A combined control method based on the grid voltage information feedforward with a crowbar circuit is proposed for a direct-drive wind power system in the paper. The unbalanced energy of the DC bus can be unleashed by the crowbar circuit during the dropping of grid voltage. At the same time, the output power of motor-side converter can be controlled to decrease according to the grid-side voltage information, and the mechanical speed of wind turbine and generator can be suppressed by the pitch angle regulation when the output power reduces. Thus, the DC-bus voltage can keep smooth. Results based on Matlab/Simulink simulation shows that this method not only improves dynamic response performance of DC bus voltages control, but also reduces the action time of crowbar circuit. It is benefit to the ability of the wind power system riding through the grid fault.

scholarly journals Research of Visual Synchronous Technology Based Control Method for PMSG Wind Power System

2021 ◽  
Vol 2087 (1) ◽  
pp. 012059
Author(s):  
Dongmei Xie ◽  
Changjian Li ◽  
Yanxi Jiang
Keyword(s):  
Power System ◽  
Wind Power ◽  
Control Method ◽  
Penetration Rate ◽  
Synchronous Generator ◽  
Doubly Fed Induction Generator ◽  
Renewable Power ◽  
Wind Power System ◽  
Synchronous Technology ◽  
Doubly Fed

Abstract Commissioned for wind power system there are two main types of generators, one is doubly fed induction generator(DFIG), the other is permanent magnetic synchronous generator(PMSG). Compared to DFIG unit, PMSG wind power system is more economical for manufacturing and maintenance. With the higher penetration rate of wind power generation in the grid, the need for the renewable power units to provide active frequency support yields relevant control characteristics in their power converters, for which the visual synchronous generator control exhibits promising features. This paper proposes a visual synchronous technology based PMSG wind power system. The simulation results verified the effectiveness of this proposed controller.

scholarly journals Model Predictive Virtual Synchronous Control of Permanent Magnet Synchronous Generator-Based Wind Power System

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5022 ◽  
Author(s):  
Yusheng Sun ◽  
Yaqian Zhao ◽  
Zhifeng Dou ◽  
Yanyan Li ◽  
Leilei Guo
Keyword(s):  
Power System ◽  
Wind Power ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Power Grid ◽  
Reducing Power ◽  
Synchronous Generator ◽  
Current Loop ◽  
Loop Control ◽  
Wind Power System

As much wind power is integrated into the power grid through power electronic equipment, the use of wind power is increased rapidly. Wind power system makes the power grid lack inertia and damping, thereby reducing power grid stability; in severe cases, it may even be disconnected. virtual synchronous generator (VSG) has been put forward to enhance the anti-disturbance performance of power grid. However, conventional VSG adopts an outer power loop and inner-current loop control. The inner-current loop control needs a pulse width modulation (PWM) module and proportion integration (PI) parameter settings. In order to reduce the parameter settings and simplify control structures, in this study, model predictive control (MPC) is used instead of inner-current loop control. At the same time—for the overall stability and control flexibility of the back-to-back system—we further propose to use outer-voltage loop control (OVLC) and MPC to stabilize direct current (DC) voltage on the machine-side and to employ model predictive virtual synchronous controls to provide inertia and damping for the power grid. The proposed control method was simulated in Matlab/Simulink (MathWorks, Massachusetts, MA, 2016) and verified by experimental results.

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