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1. WO2020114767 - METHOD AND CONTROL CIRCUIT FOR ACTUATING A THYRISTOR OR TRIAC

Publication Number WO/2020/114767
Publication Date 11.06.2020
International Application No. PCT/EP2019/081865
International Filing Date 20.11.2019
IPC
H03K 17/13 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and -breaking
13Modifications for switching at zero crossing
H03K 17/292 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and -breaking
28Modifications for introducing a time delay before switching
292in thyristor, unijunction transistor or programmable unijunction transistor switches
CPC
H02M 1/08
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H03K 17/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
H03K 17/13
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
13Modifications for switching at zero crossing
H03K 17/136
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
13Modifications for switching at zero crossing
136in thyristor switches
H03K 17/292
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
28Modifications for introducing a time delay before switching
292in thyristor, unijunction transistor or programmable unijunction transistor switches
H03K 2217/0009
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
2217Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
0009AC switches, i.e. delivering AC power to a load
Applicants
  • DIEHL AKO STIFTUNG & CO. KG [DE]/[DE]
Inventors
  • KUREK, Jerzy
Agents
  • DIEHL PATENTABTEILUNG
Priority Data
10 2018 009 494.504.12.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND STEUERSCHALTUNG ZUM ANSTEUERN EINES THYRISTORS ODER TRIACS
(EN) METHOD AND CONTROL CIRCUIT FOR ACTUATING A THYRISTOR OR TRIAC
(FR) PROCÉDÉ ET CIRCUIT DE COMMANDE PERMETTANT DE COMMANDER UN THYRISTOR OU UN TRIAC
Abstract
(DE)
Ein Triac (1) wird nach einem Spannungsnulldurchgang (tN0) einer Wechselspannungsquelle (3) mittels eines Gatestromimpulses (IP1) von einer Steuerschaltung (4) gezündet. In einer Einstellphase (P10) ermittelt die Steuerschaltung (4) eine Zündimpulsdauer (TL) des Gatestromimpulses (IP1) zum Zünden des Triacs (1), damit der Strom (IR) durch den Triac (1) nach dem Ende des Gatestromimpulses (IP1) mindestens einen Einraststromwert (IL) erreicht. In einer Betriebsphase (P20) steuert die Steuerschaltung (4) den Triac (1) nach einem Spannungsnulldurchgang (tN0) der Wechselspannungsquelle (3) mit einem Gatestromimpuls (IP1) mit der ermittelten Zündimpulsdauer (TL) an und überwacht anschließend einen Stromfluss durch den Triac (1), um gegebenenfalls die ermittelte Zündimpulsdauer (TL) anzupassen.
(EN)
A triac (1) is triggered by a control circuit (4) by means of a gate current pulse (IP1) after a voltage zero crossing (tN0) of an alternating voltage source (3). In a setting phase (P10), the control circuit (4) determines a triggering pulse duration (TL) of the gate current pulse (IP1) for triggering the triac (1) such that the current (IR) through the triac (1) reaches at least a latching current value (IL) after the end of the gate current pulse (IP1). In an operating phase (P20), the control circuit (4) actuates the triac (1) by means of a gate current pulse (IP1) having the determined triggering pulse duration (TL) after a voltage zero crossing (tN0) of the alternating voltage source (3) and subsequently monitors a current flow through the triac (1) in order to adjust the determined triggering pulse duration (TL) if necessary.
(FR)
La présente invention concerne un triac (1), qui, après un passage de la tension par zéro (tN0) d'une source de tension alternative (3), est allumé au moyen d'une impulsion de courant de grille (IP1) par un circuit de commande (4). Dans une phase de réglage (P10), le circuit de commande (4) détermine une durée d'impulsion d'allumage (TL) de l'impulsion de courant de grille (IP1) pour allumer le triac (1) de telle sorte que le courant (IR) traversant le triac (1), après la fin de l'impulsion de courant de grille (IP1), atteint au moins une valeur de courant d'accrochage (IL). Dans une phase de fonctionnement (P20), le circuit de commande (4) commande le triac (1), après le passage de la tension à zéro (tN0) de la source de tension alternative (3), à l'aide d'une impulsion de courant de grille (IP1) présentant la durée d'impulsion d'allumage (TL) déterminée, puis, surveille un flux de courant traversant le triac (1) pour éventuellement régler la durée d'impulsion d'allumage (TL) déterminée.
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