CAJ | 학술논문

列车在高速运行中表面产生的负压使冷凝风量相继减小。通过数值模拟计算不同车速下冷凝风机入口的平均负压值和冷凝风量，结果表明，高速工况下的负压影响冷凝风机正常运行。选取大容量冷凝风机并采取变频调节方式，建立以冷凝温度为反馈信号的 PID 控制方式，比较不同车速下定频与变频运行所消耗的功率，得出变频运行冷凝风机在列车低速运行时具有良好的节能效果和一定的变工况适应性，为变频技术在列车冷凝风机上的应用提供了技术依据。
열차재고속운행중표면산생적부압사냉응풍량상계감소。통과수치모의계산불동차속하냉응풍궤입구적평균부압치화냉응풍량，결과표명，고속공황하적부압영향냉응풍궤정상운행。선취대용량냉응풍궤병채취변빈조절방식，건립이냉응온도위반궤신호적 PID 공제방식，비교불동차속하정빈여변빈운행소소모적공솔，득출변빈운행냉응풍궤재열차저속운행시구유량호적절능효과화일정적변공황괄응성，위변빈기술재열차냉응풍궤상적응용제공료기술의거。
The negative pressure on the surface of high-speed train reduces cooling air volume successively.The average negative pressure value and cooling air volume were obtained by numerical simulations at different speeds.The results show that the negative pressure in high-speed conditions impacts the running of condenser fan.Larger condenser fan was chosen,frequency conversion technique was used,and a PID control method taking condensation temperature as feedback signal was established.The power consumption was compared between variable frequency operation and constant frequency operation at different speeds.It is concluded that the frequency conversion condenser fan has good energy saving effect and load adaptability at low speed.The conclusions provide technical basis for the application of frequency conversion condenser fan to high-speed train.