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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.
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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 capa
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At this moment, the major
obstacle of wide PV system commercialization is the
high initial investment cost that stems from the strict
grid connection standards and high expectations from
the PV system [2], [3]. The grid-connected PV system
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To keep overall output power per
unit cost low, the grid-connected converters should be
able to extract the maximum available power from the
PV arrays. Since the PV array characteristic is highly
nonlinear, maximum power point tracking (MPPT)
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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
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3000 W photovoltaic converter for grid-connected applications
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，分析了导抗变换器的特性，详细推导了整个系统各点电压、电流，提出一种新颖的三角波一三角波调制方法，该控制策略克服了采用传统正弦渡一三角波调制方法带来的并网电流谐波含量高、功率因数低的弊端。将导抗变换器和光伏并网逆变系统有机结合在一起，利用导抗变换器的电压源一电流源变换特性，将光伏电池阵列的直流电压变换为正弦包络线的高频电流，经过高频变压器隔离和电流等级变换，得到的高频电流再经过高频整流桥及工频逆变器逆变后并入电网。实现了电流源并网-a novel trangle modulation metho
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SVPWM变流器，网侧变换器部分，可以运行，功率因数为1-SVPWM inverter, grid-side converter part, you can run a power factor of 1
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光伏并网逆变器的仿真，通过仿真可以观察逆变以后的波形，有simulink仿真图-PV grid-connected inverter of the simulation, the simulation can be observed after wave inverter, a simulink simulation diagram
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The power characteristics of the fuel cell, DC-DC converter, DC-AC inverter are plotted
for reference real power of 50kW for standalone applications. The power characteristics of the
DC-AC inverter are plotted for 30kW, 50kW, 70kW of load and als
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In this paper, a novel approach for the design of power
converter for a microturbine is proposed. In the method, a unified
control scheme as well as a novel modular arrangement has been
developed such that the inverter circuit is capable of par
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high-capacity three-phase four-wire grid-connected PV system based on Boost converter and dual-level four-leg inverter is proposed
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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 decoup
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Two demos illustrate use of SimPowerSystems for modeling a PV array connected to a utility grid.
PVarray_Grid_IncCondReg_det.mdl is a detailed model of a 100-kW array connected to a 25-kV grid via a DC-DC boost converter and a three-phase three-lev
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MPPT with single DC-DC converter and inverter for grid connected hybrid wind-driven PMSG-PV system
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对一种由Boost和带LCL滤波器的逆变电路组成的两级式单相光伏并网逆变器进行了研究。-A two-stage single-phase photovoltaic grid-connected inverter has been studied,which consists of a boost DC/DC converter and a DC/AC inverter with LCL filter
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In this paper it is presented a detailed descr iption
of the analog implementation of the control for a DC-AC
converter composed by a DC-DC Zeta converter and a low
frequency inverter. Using only analog components, it was
developed the MPPT t
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Model Predictive Direct Power Control for a
Grid-Connected Converter with an LCL-Filter
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包括风轮机，发电机，双PWM变流器，控制系统等完整的并网永磁直驱风电系统模型，-a complete grid-connected direct-drive wind power system model,including wind turbine, generator, dual PWM converter, control system,
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This paper presents the performance of a grid connected converter topology for PV array.
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