scholarly journals HVDC Transmission Technology of Wind Power System with Multi-Phase PMSG

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3294 ◽  
Author(s):  
Shijia Zhou ◽  
Fei Rong ◽  
Zhangtao Yin ◽  
Shoudao Huang ◽  
Yuebin Zhou
Keyword(s):  
Power System ◽  
Wind Power ◽  
Low Voltage ◽  
Low Cost ◽  
Synchronous Generator ◽  
Level Control ◽  
Hvdc Transmission ◽  
Point Tracking ◽  
Wind Power System ◽  
Multi Phase

The high voltage DC (HVDC) transmission technology of wind power system, with multi-phase permanent magnetic synchronous generator (PMSG) is proposed in this paper. Each set of three-phase winding of the multi-phase PMSG was connected to a diode rectifier. The output of the diode rectifier was connected by several parallel isolated DC–DC converters. Each DC–DC converter was connected to a sub-module (SM). All SMs and two inductors were connected in a series. The proposed wind power system has several advantages including, transformerless operation, low cost, low voltage stress, and high fault tolerance. The maximum power point tracking (MPPT) and energy balance of the DC–DC converters were achieved by controlling the duty cycles of the DC–DC converters. The HVDC transmission was achieved by the nearest level control (NLC) with voltage sorting. The simulation model with 18-phase PMSG was established. Experimental results were also studied based on RT-Lab.

Research on D-PMSG Wind Power System with SDBR for LVRT

2013 ◽  
Vol 448-453 ◽  
pp. 1767-1772
Author(s):  
Xiong Feng He ◽  
Xian Yun Li ◽  
Tong Zhou Ji ◽  
Hao Peng ◽  
Kun Liu
Keyword(s):  
Power System ◽  
Wind Power ◽  
Low Voltage ◽  
Simulation Analysis ◽  
High Reliability ◽  
Low Cost ◽  
Synchronous Generator ◽  
Protection Scheme ◽  
Wind Power System ◽  
Grid Side

For enhancing low voltage ride though (LVRT) capability, this paper proposes a new protection scheme of series dynamic breaking resistor (SDBR) connected to the grid-side inverter (GSI) of directly driven permanent magnet synchronous generator (D-PMSG) wind power system, which has a lot of advantages such as possessing low cost, simple structure and high reliability. The structure, switching control strategy and matched resistance of SDBR are researched. The proposed scheme was then applied to uplift GSI voltage during a fault, maintain active power delivered to grid, inhibit DC-link overvoltage and GSI overcurrent. The simulation analysis shows that the SDBR can substantially improve the LVRT capacity of D-PMSG wind power system in PSCAD/EMTDC.

Control Strategy of PMSG in Variable Speed Wind Power System

2013 ◽  
Vol 397-400 ◽  
pp. 1398-1402
Author(s):  
Hai Long Li
Keyword(s):  
Power System ◽  
Wind Power ◽  
Control Strategy ◽  
Synchronous Generator ◽  
Variable Speed ◽  
Complete Control ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Wind Power System ◽  
Power Point

Control strategy of permanent magnet synchronous generator (PMSG) in variable speed wind power system has been design in this paper. The decoupling control can be realized by PWM converter with the field oriented strategy, and a novel adjusted method is discussed with excitation component compensation. Power characters and model of wind turbine are studied, and the simple maximum power point tracking (MPPT) algorithm is executed. Moreover, the complete control strategy is expressed considering the model limit of PMSG. The design adopted can feasible realize the predominant control within the permissible wind speed. The analysis and investigation results all have been confirmed that the excellent dynamic states and steady states performances of the control strategy.

The Study of Chopper in the LVRT of Direct-Drive Wind Energy Generation System

2014 ◽  
Vol 950 ◽  
pp. 314-320 ◽  
Author(s):  
Jun Jia ◽  
Xin Xin Hu ◽  
Ping Ping Han ◽  
Yan Ping Hu
Keyword(s):  
Power System ◽  
Wind Power ◽  
Wind Turbines ◽  
Reactive Power ◽  
Power Grid ◽  
Synchronous Generator ◽  
Direct Drive ◽  
Fault Ride Through ◽  
Wind Power System ◽  
The Stability

With the scale of wind farm continuously increasing, when grid fault, the influences of the wind turbines connected to the grid on the stability of the power grid can never be ignored. Therefore, there are higher standards of the wind turbines’ abilities of fault ride-through (FRT) and producing reactive power. This paper studies the direct-drive wind power system, and the main point is the fault ride-through (FRT) of the permanent magnetic synchronous generator (PMSG) with Chopper. By establishing the dynamic model of PMSG under the environment of DigSILENT, this paper simulates the fault ride-through (FRT) of the direct-drive wind power system connecting into power grid. During the research, we focus on the stability of voltage about the Chopper to the DC bus under faults. What’s more, in this paper, we analysis the data about how the Chopper help the DC bus to improve its stability. The simulation results show that: when there is a fault on the point of common coupling, the permanent magnetic synchronous generator has the capability of fault ride-through (FRT). Especially when there is a voltage dip on the grid side, the permanent magnetic synchronous generator could produce reactive power for power grid, effectively preventing the system voltage from declining seriously, so as to improve the system stability under faults.

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.

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