Patent
Automatic device for the compensation of the voltage variations of the polyphase alternating current mains applied to an ac-dc converter
TLDR
In this article, an automatic device for compensating the electrical mains voltage variations (2) polyphase alternating, applied to an AC-DC converter, is described in that it comprises means (5) for determining the voltage variations at the input of each rectifier.Abstract:
The invention relates to an automatic device for compensating the electrical mains voltage variations (2) polyphase alternating, applied to an AC-DC converter (3). This device is characterized in that it comprises means (5) for determining the voltage variations at the input of each rectifier (Th ,, Th Application to electrical sources of continuous power, particularly for data processing systems.read more
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Patent
Cut-off amplifier
TL;DR: In this paper, a cut-off amplifier consisting of n bidirectional switches receiving input voltages which are alternatively positive and negative is proposed. But the switches are connected to the load through a choke and to control means which place only one of the switches in "on" state when the others are in "off" state, and the phase of the input voltage which is off (selected by the switches) depends on the comparison between the voltage applied to a load and a reference voltage.
Patent
Process and device for triggering an electronic converter by the network
Maire Joseph,Chekili Riadh +1 more
TL;DR: In this article, the authors propose a device for digital triggering of an electronic converter with switching by the network, characterised in that it comprises means for measuring the instantaneous values (V0,V1,V2) of the phases of the network for supplying the converter, means (17) for formulating an image of the direct voltage (Ud) desired at the output of the bridge, for establishing various possible combinations of the phase voltages of the networks, for comparing the said combinations to the desired direct voltage, and means (19) for applying to the converter
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Patent
Cosinusoidal pulse generator with integrator stage
TL;DR: In this paper, a pulse generator for developing firing pulses for at least one controlled rectifier located between a source of single or polyphase alternating current and a load is presented, where the resulting integrated signal is compared with a control signal in a comparator circuit of the pulse generator.