【摘要】 Ф5m立式风洞是我国第一座大型立式风洞,风洞动力系统采用交流调速方案:选用进口中压变频器,驱动国产交流异步变频电动机,已经于2006年9月通气成功。笔者主要介绍了Ф5m立式风洞动力系统的概况,已经达到的技术指标:稳转速精度(相对额定值)为0.04%(24~350r/min),整个系统的功率因数达0.97;接着介绍了系统的组成:交流变频调速系统、监控系统、高低压配电系统和辅机系统;并进一步介绍了设计和调试中解决的主要技术难题,列出了主要测试数据;最后对系统进行了评价:动力系统是成功的,明显优于以往使用风洞中的直流调速系统。更多还原

【Abstract】 Φ5m vertical tunnel is the first large vertical tunnel in China.Alternating-current speed regulation project is applied to power system of this tunnel: imported central transducer is selected to drive national alternating-current asynchronous frequency conversion motor of China.The tunnel is successfully debugged in September 2005.This paper introduces the power system of Φ5m vertical tunnel and achieved technological parameters: precision of steady rotation(relative rated value) is 0.04%(24～350r/min);power factor of entire system is 0.97.Meanwhile introduces the system composition: alternating-current frequency conversion speed regulation system,monitoring system,high and low pressure electricity supply system and assistant system,solved primary technical difficult problems in design and debugging.The article displays main test data,and the results show the power system is successful and obviously more excellent than used direct current speed regulation system in tunnel.更多还原