CONTROLLING METHOD FOR ELECTRIC RAILCAR

PURPOSE:To improve the efficiency of a preliminary excitation by preliminarily exciting before closing a regenerative brake weakening switch. CONSTITUTION:When a brake command line 18 is energized by a brake command to close the interlock contact 16 of a brake converter, a coil 14a of a preliminary...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	TACHIBANA MEGUMI
Format:	Patent
Sprache:	eng
Schlagworte:	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 GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To improve the efficiency of a preliminary excitation by preliminarily exciting before closing a regenerative brake weakening switch. CONSTITUTION:When a brake command line 18 is energized by a brake command to close the interlock contact 16 of a brake converter, a coil 14a of a preliminary excitation switch 14 is energized. Thus, the preliminary excitation is performed in all field state. Then, since the contact 14b of the switch 14 is closed, the coil 9a of a disconnecting switch 9 of a main circuit is excited. Then, since the contact 9b of the switch 9 is closed, the coils 12a, 10a of a weakening switch 12 and a disconnecting switch 10 of a main circuit are energized. When a field current comes to the prescribed value or higher, the switch 14 is opened.