ZERO CROSSING POINT DETECTING DEVICE, POWER SUPPLY DEVICE, AND ZERO CROSSING POINT DETECTING METHOD

A zero crossing point detecting device (25) includes a control circuit (20) that subtracts a difference between a first detection timing and a second detection timing from a half cycle of the alternating current voltage to obtain a value, the control circuit (20) halving the obtained value to calcul...

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Bibliographic Details
Main Authors AIBA, Kenichi, KUHARA, Masakazu, SATO, Takeshi
Format Patent
LanguageEnglish
French
German
Published 21.12.2016
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
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:A zero crossing point detecting device (25) includes a control circuit (20) that subtracts a difference between a first detection timing and a second detection timing from a half cycle of the alternating current voltage to obtain a value, the control circuit (20) halving the obtained value to calculate a zero crossing point specifying parameter, the control circuit (20) specifying a zero crossing time at which the alternating current voltage crosses zero volts on the basis of the zero crossing point specifying parameter and the cycle of the alternating current voltage, and the control circuit (20) controlling, on the basis of the specified zero crossing time, a switching operation of a switching element (16) which is used to rectify the alternating current voltage into a direct current voltage.
Bibliography:Application Number: EP20160173497