变频调速在公路隧道通风控制中的应用

隧道通风机的控制直接影响到通风的效果、风机的使用寿命和电能的消耗量。将变频调速技术应用到隧道通风控制中，实现风机软启动和无级调速，能延长风机的使用寿命、降低噪声和节约电能。结合风机特性和风阻特性曲线分析了变频调速的基本原理，讨论了其应用的可行性，给出了变频调速技术在公路隧道通风控制系统中的应用方法，并通过实际验证计算。结果表明，变频调速技术能保证公路隧道通风机节能、可靠、平稳的运行，降低了噪声和振动，延长了通风机的使用寿命。

Application of variable-frequency variable-voltage in highway tunnel ventilation control

The control of blower in tunnel has the direct effect on the ventilation outcome,the(using) life-span of blower and electrical wastage.The application of variable-frequency variable-voltage technique in tunnel ventilation control can achieve blower's soft-start and stepless drive,this can extend the using life-span of blower,minimize noise and conserve the consumption of power.This paper analyzes the principle of variable-frequency variable-voltage in accordance with the characteristic of blower,discusses its feasibility of application,presents the project and method of application in highway tunnel ventilation control system and also validates its notable effect through actual calculation.The result shows that variable-frequency variable-voltage technology can make sure the highway tunnel ventilation run economically,minimize its noise and shake,and extend the using life-span of blower.1 tab,2 figs,9 refs.