JP2517915B

PURPOSE:To improve follow-up properties for the set value of a current as well as a follow-up accuracy for the set value, by nullifying the load voltage of an invertor when the load current of the invertor has arrived at the upper end of the width of hysteresis. CONSTITUTION:An invertor circuit cons...

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Hauptverfasser:	SHIRAISHI TOMOO, OGIWARA YOSHA, KUMAZAWA MASAMITSU
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:	PURPOSE:To improve follow-up properties for the set value of a current as well as a follow-up accuracy for the set value, by nullifying the load voltage of an invertor when the load current of the invertor has arrived at the upper end of the width of hysteresis. CONSTITUTION:An invertor circuit consists of switching elements S1-S4 and diodes D1-D4. A current change rate detecting and polarity deciding circuit 7 inputs the set value of a current and detects the polarity of the change rate of a current set value changed with time. This output is latched by a latch circuit 8. The output of the latch circuit 8 is inputted into AND circuits 11-1, 11-2 when a hysteresis comparator 4 changes. The polarity judgement circuit 9, connected to a load current detecting circuit, is connected to the AND circuits 11-1, 11-4 and is connected to the AND circuits 11-2, 11-3 through a converting circuit 5 while the output side of the hysteresis comparator 4 is connected to the AND circuit 11-4 through the converting circuit 5 and is connected to the AND circuit 11-3 and the latch circuit 8 directly.