Frequency converter having an intermediate circuit without any capacitors

Frequency converter having an intermediate circuit without any capacitors

The invention relates to a frequency converter comprising an intermediate circuit (6) without a capacitor, and a power supply unit (12) for an electronic system of said converter. Said power supply unit (12) comprises an input-side back-up capacitor (CP) that is electrically mounted in parallel with...

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1. Verfasser: BRUCKMANN MANFRED,SCHIERLING HUBERT
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Sprache:eng
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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 THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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creator BRUCKMANN MANFRED,SCHIERLING HUBERT
description The invention relates to a frequency converter comprising an intermediate circuit (6) without a capacitor, and a power supply unit (12) for an electronic system of said converter. Said power supply unit (12) comprises an input-side back-up capacitor (CP) that is electrically mounted in parallel with the intermediate circuit (6) without a capacitor, a supply line (14) of the back-up capacitor (Cp) comprising a decoupling diode (16). According to the invention, a turn-off semiconductor (22) is electrically mounted in inverse-parallel with the decoupling diode (16), the control input of said semiconductor being connected to an output of a power failure detection device (24). In this way, a modified frequency converter comprising an intermediate circuit (6) without a capacitor can be provided, in which a standard option kinetic back-up supply can be used.
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Said power supply unit (12) comprises an input-side back-up capacitor (CP) that is electrically mounted in parallel with the intermediate circuit (6) without a capacitor, a supply line (14) of the back-up capacitor (Cp) comprising a decoupling diode (16). According to the invention, a turn-off semiconductor (22) is electrically mounted in inverse-parallel with the decoupling diode (16), the control input of said semiconductor being connected to an output of a power failure detection device (24). 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subjects 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 THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
title Frequency converter having an intermediate circuit without any capacitors
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