Patent ID: 8565992
Filing Date: 2013-10-22
Classification: B60L

Abstract:
1. A method for braking an electrically driven railway vehicle fitted with spring-store-based friction brakes and with a motor drive provided by permanently excited synchronous machines, the terminals of the synchronous machine being connected via switches to devices which generate a braking torque, the method comprising: at least one of measuring and evaluating a plurality of the following operating conditions: measuring deceleration via at least one sensor, measuring zero crossings of motor voltages and determining the deceleration by variance determination, measuring motor or intermediate circuit power, measuring power in braking resistance, measuring rotational speeds, and measuring temperature using said plurality of operation conditions as input variables for at least one of control and regulation of the overall braking power of the railway vehicle, said at least one of control and regulation comprising: comparing said measured plurality of operation conditions with a stored characteristic map involving the same measured operation conditions of said plurality of operating conditions to determine a nominal/actual comparison, the stored characteristic map being stored in a memory and being available for adhering to braking deceleration limit values prescribed by at least one of a railway company and in standards; sequentially activating for braking, via at least one of a controller and a regulator, each of the provided synchronous machines of the railway vehicle and the spring-store-based friction brakes of the railway vehicle individually and in succession as a function of said nominal/actual comparison.