SWITCHING CONTROLLER

PROBLEM TO BE SOLVED: To secure a dead time and to vary the duty ratio of a switching signal continuously from 0% to 100%.SOLUTION: A switching controller adds an offset value corresponding to the dead time to a first signal wave when the first signal wave has a value equal to or larger than a cente...

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Bibliographische Detailangaben
Hauptverfasser:	SHIBANO YUSUKE, HASEGAWA YUKIHISA
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 THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To secure a dead time and to vary the duty ratio of a switching signal continuously from 0% to 100%.SOLUTION: A switching controller adds an offset value corresponding to the dead time to a first signal wave when the first signal wave has a value equal to or larger than a center value of a triangular wave, and limits the signal wave to the maximum value when the addition result exceeds the maximum value of the triangular wave so as to generate a second signal wave. The second and first signal waves are compared to generate switching signals for upper and lower arms. The switching controller subtracts the offset value from the first signal wave when the first signal wave has a value smaller than the center value of the triangular wave, and limits the signal wave to the minimum value when the subtraction result exceeds the minimum value of the triangular wave so as to generate the second signal wave. The second and first signal waves, and triangular wave are compared to generate the switching signals for the upper and lower arms.