抄録
The major challenges faced during the speedup of the current collection system are improved contact performance (better contact between a pantograph and an overhead line) and reduction in the noise level along the railroad. We have improved the current collection system to reduce contact loss and decreased the number of pantographs to reduce the aerodynamic noise generated from the pantograph. Hence, the present Shinkansen train has usually two pantographs connected with a bus line. For further speedup, we must decrease the noise level to a greater extent. Thus, we must reduce the number of pantographs to one per train set. This 1-pantograph system, which we adopt for the first time as for Shinkansen train, needs to have high contact performance to reduce the contact loss more than ever. To reduce contact loss, without increasing upward force acting on the pantograph, we attempted to improve the compliance characteristics by using pantographs with a low mass head. We confirmed the effectiveness of such a current collection system by performing simulations and conducting on-track tests. The results show that the system implements the allowance for the contact loss ratio. Therefore, with the proposed system, we can complete the operational speeds of 360km/h.
