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Title: Apparatus for controlling the firing of rectifiers in polyphase rectifying circuits

A polyphase rectifier is controlled with precision by a circuit that filters and shifts a reference signal associated with each phase and that starts a ramp signal at a zero crossing of the shifted reference signal. The difference between the ramp signal and an external trigger signal is used to generate a pulse that switches power rectifiers into conduction. The circuit reduces effects of variations that introduce subharmonics into a rectified signal and it can be used for constant or time-varying external trigger signals.
Authors:
Publication Date:
OSTI Identifier:
6859163
DOE Contract Number:
EY-76-C-02-3000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ELECTRONIC CIRCUITS; DESIGN; RECTIFIERS; CONTROL EQUIPMENT; DATA TRANSMISSION; SIGNALS; COMMUNICATIONS; ELECTRICAL EQUIPMENT; EQUIPMENT 420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)