Method for Controlling an Electromagnetic Retarder

A method for controlling an electromagnetic retarder. More specifically, the method relates to determining, in a control unit, a maximum allowable intensity (Im) of an excitation current to be injected into an electromagnetic retarder (1). The retarder includes a shaft bearing secondary windings (5)...

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Bibliographische Detailangaben
Hauptverfasser:	DESSIRIER BRUNO, HAILLY STEPHANE, NEWIADOMY SERGE
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A method for controlling an electromagnetic retarder. More specifically, the method relates to determining, in a control unit, a maximum allowable intensity (Im) of an excitation current to be injected into an electromagnetic retarder (1). The retarder includes a shaft bearing secondary windings (5) and field coils (13) which are supplied by the secondary windings (5), the primary coils (8) and secondary windings (5) forming a generator. The retarder also includes a jacket (9) inside which the field coils (13) generate Foucault currents and a circuit for the liquid cooling of said jacket. The method consists in determining the maximum intensity in real time from data and values that are representative of the speed of rotation of the rotary shaft, the heat load that the cooling circuit can dissipate and the flow rate (D) of the coolant. The method is suitable for electromagnetic retarders which are intended for vehicles such as heavy vehicles.