Patent ID: 8825240
Filing Date: 2014-09-02
Classification: B60L,B60T,B61C,Y02T

Abstract:
1. A control device for an electric rolling stock including wheels, an electric motor that drives the wheels, and an inverter that controls the electric motor, the control device comprising: a slip/skid detection control unit that detects slip/skip of the electric rolling stock; an adhesion torque calculation unit that calculates an adhesion torque of the electric rolling stock; an adhesion torque retention unit that stores the calculated adhesion torque at regular intervals, outputs a first adhesion torque on the basis of the plurality of adhesion torques before detection when the slip/skid is detected, and outputs the adhesion torque in detection of the slip/skid as a second adhesion torque; a command torque generation unit that reduces a drive torque of the electric motor to a first drive torque when the slip/skid is detected; and a detection unit that detects a rapid change of the adhesion state on the basis of the first adhesion torque and the second adhesion torque when the slip/skid is detected, wherein the command torque generation unit sets the first drive torque to a different value between when the rapid change of the adhesion state is detected and when the rapid change of the adhesion state is not detected.