Analysis and Study for the Mechanical Characters of the High-Frequency Chopper Cascade Speed-Adjustment Driver

The high-frequency wave chopper cascade speed- adjustment driver system has an overt advantage on energy saving and improvement on high voltage, huge power fan blower and water pump. As a result, It is widely used at lots of technical locale in China. However, for the different control mode with traditional shifting phase burst mode, some changes have taken place on the main circuit and inner characteristic of system .So It is very necessary to analyse and study the mechanical characters of system. In this paper, the radical theory about chopper regulation system is introduced and the relation between input and output of the main circuit deeply analysed. The equations about mechanical characteristic including two available work district of system are put forward .At last, according to the above conclusions, the curve about the mechanical characters of chopper cascade speed-adjustment drive system is painted.