SELF-LEARNING RELAY TURN-OFF CONTROL SYSTEM AND METHOD

An exemplary embodiment is disclosed of a relay turn-off control system for use with an alternating-current (AC) signal input. The system may include a relay, a relay current load sensor connected to the relay, and a rectifier circuit connected to the relay current load sensor and having an output....

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Bibliographic Details
Main Authors Wan Lili, Hu Daxing
Format Patent
LanguageEnglish
Published 23.02.2017
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:An exemplary embodiment is disclosed of a relay turn-off control system for use with an alternating-current (AC) signal input. The system may include a relay, a relay current load sensor connected to the relay, and a rectifier circuit connected to the relay current load sensor and having an output. A microprocessor may be connected to the rectifier circuit output. The microprocessor may be configured to set a relay turn-off signal output time based on an empirically determined duration time for the relay to turn-off and further based on determining a zero-cross period via use of a modulo operation.
Bibliography:Application Number: US201514835917