MAGNETIZING CURRENT OPTIMIZATION EQUIPMENT FOR LINEAR INDUCTION MOTOR AND ELEVATOR CAGE DOOR CONTROL SYSTEM

PROBLEM TO BE SOLVED: To improve the characteristics of a linear induction motor driving an elevator cage door by changing a magnetizing current to a linear motor in response to the load of linear motor. SOLUTION: A magnetizing current level is set to a high value during door opening operation. Duri...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	REDDY NARASIMHA K, COMINELLI DONALD F, BROOKS WILLIAM F, TOWEY JAMES P JR, FARGO RICHARD N, AMEND BRIAN J
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 DYNAMO-ELECTRIC MACHINES ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL ELEVATORS ESCALATORS OR MOVING WALKWAYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION HAULING HOISTING LIFTING 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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve the characteristics of a linear induction motor driving an elevator cage door by changing a magnetizing current to a linear motor in response to the load of linear motor. SOLUTION: A magnetizing current level is set to a high value during door opening operation. During door closing operation, the magnetizing current level is set to a medium value. And by the signal from a first positioning system 42, if a door is completely placed at a door closing position by software through a feedback system, then the magnetizing current level is set to a low level. When a force is being applied to keep an elevator cage door opening, the first positioning system 42 detects this situation, this information is sent to a controller 60 through a first cable 68, and magnetizing current level is increased to a high value thereafter. By optimizing the magnetization current, the temperature rise in a motor can be reduced considerably.