Description: 针对兆瓦级风电并网逆变器主电路研制中存在的并联扩容、开关频率较低和LCL滤波器难以优化设计等问题，提出了采用交流侧串接电感再进行并联的均流方案，采用载波移相技术提高变流器的等效开关频率，提出了LCL滤波器的设计原则，并给出了上述设计的理论依据和实现方法。通过对2兆瓦风电变流器主电路的仿真验证了上述技术方案。-MW-class wind power for grid-inverter main circuit of the parallel development of existing capacity, a lower switching frequency and LCL filter design difficult to optimize the problem, a series inductor AC side in parallel are further flow program, the use of carrier phase-shifting technology to enhance the equivalent converter switching frequency, a LCL filter design principles, and gives the above-mentioned theoretical basis for the design and implementation. 2 MW of wind power converter main circuit simulation program to verify the above-mentioned technology. Platform: |
Size: 212992 |
Author:cesc |
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Description: 为满足在电网发生故障时风电机组需保持与电网连接并向系统不间断供电的要求,提出
了双馈风力发电机的动态模型、变流器模型、变流器保护及电网模型,以研究双馈风力发电机的暂
态特性.以1·5MW SUT-1500双馈风力发电机为原型,由一个无穷大电源等效电网模型,变流器模
型采用定子磁链的定向电流矢量控制方法,利用PSCAD软件对双馈电机的暂态特性进行仿真.仿
真结果表明,矢量控制能够实现双馈电机的有功、无功解耦,并可改善系统的低压穿越能力.
-To meet the power failure to keep their wind turbine grid-connected uninterruptible power supply to the system requirements, proposed doubly-fed wind turbine dynamic models of converter model, inverter protection and network model to Study of double-fed wind generator transient characteristics. to 1.5 MW SUT-1500 double-fed wind turbine prototypes, by an infinite power grid equivalent model of converter model uses the stator flux orientation of current vector control methods, using PSCAD software to double-fed motor simulation of transient characteristics. The simulation results show that vector control can be achieved double-fed motor active and reactive decoupling, and can improve the system through the capacity of low-voltage. Platform: |
Size: 619520 |
Author:mengxianghua |
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Description: This report is the conclusion of the post-course work following the Nordic PhD-course on
Wind Power, which was held on Smø la 5th – 11th June 2005. The goal of the project was to
construct a Simulink model of a 2.5 MW wind turbine with direct-driven permanent magnet
generator connected to the grid via a back-to-back three-phase converter. The model was then
to be tested in simulation runs. Platform: |
Size: 153600 |
Author:proust |
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Description: The work presented in this thesis includes control system design, analysis and grid synchronization of a DFIG (doubly-fed induction generator) driven by a wind turbine using stator-voltage and stator-flux oriented frames. The DFIG is a special type of induction machine which is comprised of two back-to-back converters. One converter connects the DFIG stator to the grid, and the second converter is connected to the rotor of the machine through a DC-link capacitor Platform: |
Size: 75776 |
Author:sabarinagarajan |
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Description: Improved direct torque control of an induction generator used in a
wind conversion system connected to the grid Platform: |
Size: 3660800 |
Author:Ninouh |
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Description: The generating systems use Doubly-Fed Induction Generators (DFIGs) to achieve high
conversion efficiency and to reduce the installation cost. This paper presents a modeling and Maximum
Power Point Tracking (MPPT) control method of DFIG-based variable-speed wind energy conversion
system. The generator considered is a wound rotor induction machine whose stator is connected directly
to the grid and the rotor is fed through back-to-back Pulse-Width Modulation (PWM) converters. Stator
flux-oriented vector control is applied to control the active and reactive current loops independently. The
MPPT control method in a Wind Energy Conversion System (WECS) is proposed. The proposed control
solution aims at driving the position of the operating point near to optimality. This is a very important
aspect to maintain DFIGs efficiently in a variable wind speed. The wind generator is modeled in RSCAD
program which is interfaced with the Real Time Digital Simulator (RTDS). Platform: |
Size: 678912 |
Author:menaouer |
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Description: this model of wind turbine, and doubly fed induction generator, connected to distribution grid-this is model of wind turbine, and doubly fed induction generator, connected to distribution grid Platform: |
Size: 7168 |
Author:johnyDCA |
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Description: This demo implements a doubly-fed induction generator (DFIG) for a wind-turbine connected to a grid circuit. Platform: |
Size: 88064 |
Author:SaNArul |
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Description: Power flow analysis of a grid connected
PMSG based direct driven wind electric
generator Platform: |
Size: 1858560 |
Author:benkhada |
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Description: Abstract—If a wind farm is weakly connected to a power grid,
then the voltage of the connection point fluctuates frequently
due to the changeable wind speed. The active and reactive power
of a doubly-fed induction generator (DFIG) can be decoupling
controlled and the grid-side converter (GSC) of a DFIG can also
generate some reactive power by adjusting the power factor,
thus a DFIG can be considered as a reactive power resource to
stabilize the voltage of the connection bus. Platform: |
Size: 539648 |
Author:ramin |
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Description: MATLAB模型，双馈风电机组基于最大功率跟踪，低风速超速控制，中风速高风速变桨距控制(DFIG MATLABThe wind turbine and the doubly-fed induction generator (WTDFIG) are shown in the figure called The Wind Turbine and the Doubly-Fed Induction Generator System. The AC/DC/AC converter is divided into two components: the rotor-side converter (Crotor) and the grid-side converter (Cgrid). Crotor and Cgrid are Voltage-Sourced Converters that use forced-commutated power electronic devices (IGBTs) to synthesize an AC voltage from a DC voltage source. A capacitor connected on the DC side acts as the DC voltage source. A coupling inductor L is used to connect Cgrid to the grid. The three-phase rotor winding is connected to Crotor by slip rings and brushes and the three-phase stator winding is directly connected to the grid. The power captured by the wind turbine is converted into electrical power by the induction generator and it is transmitted to the grid by the stator and the rotor windings.) Platform: |
Size: 82944 |
Author:zzZZ0202 |
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Description: MATLAB中自带的双馈风力发电机并网系统的简单平台测试(MATLAB comes with the doubly-fed wind generator grid-connected system of simple platform test) Platform: |
Size: 87040 |
Author:一祭沉默 |
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Search - Grid Connected Wind Generator