BRAKE CONTROL CIRCUIT OF DC ELECTRIC RAILCAR

PURPOSE:To effectively switch from plugging to a regeneration by locking the operation of a plugging return controller from the detection of the plugging to the finishing of a preliminary excitation. CONSTITUTION:When the current of a diode 10 or 11 is a constant value or higher and continued for on...

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Bibliographische Detailangaben
Hauptverfasser:	OZEKI MINEO, SUZUKI TETSUJI
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To effectively switch from plugging to a regeneration by locking the operation of a plugging return controller from the detection of the plugging to the finishing of a preliminary excitation. CONSTITUTION:When the current of a diode 10 or 11 is a constant value or higher and continued for one period or longer of a chopper main circuit at a plugging time, a flip-flop 18 is set, and a chopper stopping circuit 19 is operated. On the other hand, after the set time of a timer 20 is elapsed, a regenerative switching electromagnetic contactor 7 is controlled OFF. When a contactor 7A is separated, a preliminary timer 25 is operated to flow a preliminarily exciting current to a field coil 4. After finishing the preliminary excitation, a regenerative braking operates. A plugging return controller 33 returns to the plugging brake when the regenerative current becomes the set value or lower. A plugging controller 33 is locked by the set output of the flip-flop 18 and the operation output of the timer 25.