绿色交-交变频器

Green Cycloconverter

传统的无环流交鄄交变频器最大的缺陷是对电网产生无功功率冲击和谐波公害,为此提出了高性能绿色交鄄交变频器的概念。通过交鄄交变频器与电力无源滤波器组合,合理控制变频器环流的大小,可实时补偿无功功率。滤波器使新型交鄄交变频器系统的谐波得到抑制,环流不但使系统最高输出频率从33%的输入频率提高到80%输入频率,而且基本上消除了输出电流畸变。通过传统的交鄄交变频系统和高性能绿色交鄄交变频系统性能的对比证明,后者明显具有更高的输出性能,同时消除了对电网的污染,达到了绿色的效果。

The worst inherent defects of the traditional cycloconverter are the reactive power impact and the harmon-ics pollution on the power source. Therefore, the thesis puts forward the conception of the high-performance green cyclon-verter-fed drive system. The paper proposes a idea to combine cycloconverter with the reactive power filters and to control the circumfluence rationally so that the reactive power can be compensated in time and the the harmonics of the new cy-cloconverter can be restrinct. The circumfluence heightens the upper limit of output frequency from 33% to 80% of the input frequency and almost eliminates the distortion of output current.Finally,the comparison of the perfor-mances between the traditional cyclocoverter-fed system and the new one proved that the later have obviously better output performance,the pollution to the electrical source is eliminated,and the effect of green is achieved.