The present invention discloses a regenerative frequency converter (1) and an elevator system comprising such a frequency converter. The frequency converter (1) is operable for bidirectional supply of power between an alternating current supply network (2) and an alternating current electric motor (3). The frequency converter comprises a regenerative line bridge (6) and an inverter (7) interconnected by a DC link (8). The inverter (7) comprises phase legs (9A, 9B, 9C) for supplying a variable-amplitude, variablefrequency voltage to the motor phases. The regenerative line bridge (6) comprises buckboost converters (13A,14A,15A,16A,18A; 13B,14B,15B,16A,18A; 13C,14C,15C,16C,18C) connected between different input terminals (4A,4B,4C) and the DC link (8).
A REGENERATIVE FREQUENCY CONVERTER AND AN ELEVATOR SYSTEM
REGENERATIVER FREQUENZUMRICHTER UND AUFZUGSSYSTEM
CONVERTISSEUR DE FRÉQUENCE RÉGÉNÉRATIF ET SYSTÈME D'ASCENSEUR
2023-11-22
Patent
Electronic Resource
English
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B66B Aufzüge , ELEVATORS / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
Elevator drive unit, elevator system and method for managing regenerative power of elevator system
European Patent Office | 2024
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