Description: circuits, design of three phase 12 pulse converter. it is very useful for improving the power factor.-circuits, design of three phase 12 pulse converter. it is very useful for improving the power factor. Platform: |
Size: 590848 |
Author:Murali |
Hits:
Description: 本文以双Pwm变换器为基础，分析论述了电力电子装置的整流、逆变和回馈状态的国内外发展状况。随着科学技术的发展，电力电子装置的低功率因数和高谐波污染已经成为电网的两大主要危害，因此提高系统功率因数便是电力电子技术的发展趋势，本文阐述了功率因数的定义，脉宽调制的种类以及电压
型PWM变换器的原理、控制方法等内容，比较了脉宽调制的各种类型，详细推导了三相电压型PWM变换器的数学建模，指出系统各种控制方法的优缺点，着重表达了二相调制脉宽空间矢量WPM的算法推导，选用了系统主控芯片，编写了系统软件程序，设计了交一直一交的主电路结构，针对控制系统的要求，论
文对影响系统性能的几个主要参数进行了理论分析、推导和数值计算。
本文用Matalb仿真软件，对整个控制系统的动态性能进行了仿真与分析，验证了系统理论的正确性和可应用性，对样机的研制提供了强有力的指导作用。
论文最后，讨论了样机实验。通过一系列的实验，记录、分析样机在各种状态下的波形和数据，得出结论，做出展望，为课题的进一步研究打下了一定的基础。
-In this paper, double-Pwm converter, based on analysis of power electronic devices discussed rectifier, inverter and feedback status of domestic and foreign developments. With scientific and technological development, low-power electronic devices, power factor and high harmonic pollution has become the network s two main hazards, thus improving system power factor is the development trend of power electronics technology, this paper, the definition of power factor, pulse-width modulation types as well as voltage
-Type PWM converter principle, control methods, content, comparison of various types of pulse-width modulation, detailed derivation of the three-phase voltage-type PWM converter mathematical modeling, pointing out that the system s advantages and disadvantages of various control methods, focusing on expression of two-phase space vector pulse width modulation algorithm derived WPM, choose the system master chip, the preparation of the system software program designed to pay a d Platform: |
Size: 3617792 |
Author:狼狼 |
Hits:
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 |
Hits:
Description: 自己利用ＰＳＣＡＤ搭建的ＭＭＣ三相变换器，包括了电容预充电过程。-The MMC using PSCAD build their own three-phase converter, including a capacitor pre-charging process. Platform: |
Size: 4096 |
Author:邹盛 |
Hits:
Description: 提出了一种三相交流/直流变换器实现功率因数修正,谐波抑制，直流链电压调节, 以及直流侧中点电压补偿。-Proposed a three-phase AC/DC converter to achieve power factor correction, harmonic suppression, DC link voltage regulator, and the DC side midpoint voltage compensation. Platform: |
Size: 699392 |
Author:吴亮 |
Hits:
Description: This paper presents the Direct Power Control of
Three-Phase Matrix Converters (DPC-MC) operating as Unified
Power Flow Controllers (UPFC). Since matrix converters allow
direct AC/AC power conversion without intermediate energy
storage link, the resulting UPFC has reduced volume and cost,
together with higher reliability. Theoretical principles of DPCMC
method are established based on an UPFC model, together
with a new direct power control approach based on sliding mode
control techniques. As a result, active and reactive power can be
directly controlled by selection of an appropriate switching state
of matrix converter. This new direct power control approach
associated to matrix converters technology guarantees
decoupled active and reactive power control, zero error
tracking, fast response times and timely control actions.
Simulation results show good performance of the proposed
system. Platform: |
Size: 631808 |
Author:abdalla el-saadaney |
Hits:
Description: 电力电子技术中三相变流器的模型，可用于微电网中质量的控制-Three-phase power electronic converter technology models that can be used in quality control microgrid Platform: |
Size: 4096 |
Author:张艳伟 |
Hits:
Search - three phase converter