| 摘要 |
Objective: To reduce fluctuations in deceleration of an electric train and improve riding comfort even when the regenerative load is lacking during a regenerative brake operation. Resolution means: A drive control device (1) for an electric train according to this invention comprises a switch (4) for connecting or opening direct-current power, a power converter (5) into which the direct-current power is input via the switch between two terminals on an input side and which converts the direct-current power into alternating-current power through a switching action and drives an alternating current rotating machine (13) connected on an output side, and a voltage detector (15) for detecting the voltage between the two terminals. In addition, a power controller (14) is provided that controls the power converter such that when the detected voltage of the voltage detector exceeds a predetermined open-circuit voltage, the switch is opened and the regenerative brake force is reduced by the alternating current rotating machine under a predetermined reduction pattern having a ramp reduction time longer than 0. |
