Supervisory and control system for rotary machinery, particularly rotary electrical machines

US4041541A · kind A · utility

Assignee

• Brown, Boveri & Cie AG · DE

Inventors

• Emile Frossard · Wettingen, CH
• Fritz Schleuniger · Würenlos, CH
• Bruno Stadler · Berlin, DE

Key dates

• Filing date: Dec 31, 1975
• Grant date: Aug 9, 1977
• Expiry date: Dec 31, 1995

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K1/024
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A rotary transformer having a stator and a rotor is energized by a power supply at commercial power frequency; sensors are located on the rotary part of the machine and provide sensing output signals, at discrete threshold levels, to a threshold circuit which, in accordance with the sensed signals, provides loading on the transformer secondary in discrete steps; the loading on the secondary is reflected into the primary and sensed to provide, selectively, alarm or stop-motion signals if operating parameters, typically temperature, as sensed by the sensors, reach levels necessitating an alarm or even a stop-motion signal.