Rectifier and system for controlling the speed of an electric motor

The invention concerns a reversible current rectifier, for connection to part of a polyphase network and to a continuous bus (2, 3) comprising a plurality of rectifier cells (200u, 200v, 200w, 300u, 300v, 300w), each rectifier cell including a rectifying device (4) and a one-way electronic switch (5...

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Bibliographische Detailangaben
1. Verfasser:	ANDREJAK JEAN-MARIE,ANDRIEUX CHRISTIAN,TIENTCHEU-YAMDEU MATHIAS,LAGARDE ALEXANDRE
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention concerns a reversible current rectifier, for connection to part of a polyphase network and to a continuous bus (2, 3) comprising a plurality of rectifier cells (200u, 200v, 200w, 300u, 300v, 300w), each rectifier cell including a rectifying device (4) and a one-way electronic switch (5) connected in anti-parallel with the rectifier device, the rectifying devices of different cells being arranged so as to form one rectifier. Each rectifier cell comprises means for controlling (600, 600'; 600'') the electronic switch (5) of the cell arranged to control the latter in closure after detecting a conduction of the rectifying device (4) of the cell so as to enable current to be returned to the network. The control means are arranged to receive a signal (601) external to the cell, for controlling the opening of the electronic switch (5), derived from another rectifier cell.