不可控整流桥的无源滤波技术.doc

------------------------------------------------------------------------------------------------——————————————————————————————————————不可控整流桥的无源滤波技术 哈尔滨工程大学本科生毕业论文 摘 要 本文针对电网中谐波污染日趋严重的问题，介绍了四种无源滤波电路，描述了两种单相无源滤波电路和两种三相无源滤波电路，其中单相滤波技术是基于谐振电抗器原理，在对其工作原理理论分析基础上，进行了数次仿真实验研究，给出了相关的实验波形、数据和对比结果。结果表明，这种无源滤波方案的输入谐波电流校正效果良好、输出电压纹波电压峰峰值小，串联谐振电抗器的功率因数较高，双调谐的总电流畸变因数较低等特点。另外介绍了一种采用移相电抗器的三相无源滤波技术，通过移相抑制谐波的方法。以12相整流电路为例阐述了移相角的选取和移相绕组的连接方式。对采用移相电抗器的12相整流系统进行了仿真和实验研究，并与3相整流系统做了比较，验证了移相电抗器对于电源侧的电流谐波有显著的抑制效果，证明了该方法在多相整流系统中应用的可行性。 关键词：谐振电抗器；移相电抗器；无源滤波；谐波抑制 哈尔滨工程大学本科生毕业论文 ABSTRACT In this paper, power network harmonic pollution is a serious problem, introduced the four passive filter circuit, described two types of single-phase passive filter circuit and two three-phase passive filter circuit, including single-phase filtering technique is based on the resonant reactor Principle, the principle of its work in the theoretical analysis based on several simulation studies, given the experimental waveforms, data and compared the results. The results show that the passive filtering program input harmonic current correction of the result is good, the output voltage peak-to-peak ripple voltage small, series resonant Reactor high power factor, dual-tuner of the total current characteristics and low distortion factor. Also used to introduce a phase-shifted three-phase reactor passive filtering techniques, through the phase-shift harmonic suppression approach. The 12-phase rectifier circuit as an example of a phase angle shift selection and phase-shifting winding connection. Using phase-shifting reactor of 12-phase rectifier system simulation and experimental studies, and 3-phase rectifier system has done a comparison, to verify the phase-shifting reactor for the power supply side of the current harmonic significant inhibitory effect, show that the method in multi-phase rectifier system, the feasibility of the application. Keywords: Resonant Reactor; phase-shifting reactor; P