采用迭代算法，对弹性轮胎在不同松软地表上的轮胎变形、下陷，轮胎的牵引力、滚动阻力、扭矩、牵引因数、牵引效率进行了计算。
Interative algorithm is used to calculate the tire deformation and sinkage, tractive force, rolling resistance, torque, tractive coefficient, tractive efficiency under different soft terrains.
因此，合理设计滤波器，可使牵引变电站的功率因数及谐波同时满足要求。
Hence, a filter could be designed to increase power factor of traction substation and decrease the harmonic currents.
在电气化铁道牵引变电站中，装设无功补偿电容器和谐波滤波器是提高功率因数、改善电能质量的重要手段。
In electric railway traction substation, power capacitors and harmonic filters are the important devices for improving both the power factor and the power quality.
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