| 摘要 |
PURPOSE:To ensure generative brake force easily when regenerative brake force is not supplied sufficiently by providing a circuit for switching first and second main regenerative brake circuits, connected in parallel, to a generative brake circuit. CONSTITUTION:Parallel regeneration is carried out during normal suppressive regeneration, and regenerative current of a first main circuit is collected by a stringing through a contactor G, a field contactor F1, an inductive shunt IS1, an armature A1, a disconnector 2 and a pantograph 1, connected in parallel. Regenerative current is also collected by the stringing in a second main circuit. When switches Xa, Ya are turned OFF, switches Xb, Yb are turned ON, a series contactor S is thrown in, and a disconnecting switch 2 and the field contactors F1, F2 are turned OFF, a cross-field generative brake circuit is formed, and predetermined brake force can be obtained by controlling the short circuit solenoid contactor of brake resistors, i.e. main resistors MR1, MR2. |
