Current limiting device and current limiting method for DCDC converter

The invention discloses a DCDC converter current limiting device, and belongs to the electrical field. The DCDC converter current limiting device comprises a sampling module, a current limiting module and a control module, wherein the sampling module is used for sampling output of a DCDC converter t...

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Bibliographische Detailangaben
Hauptverfasser:	GUO QILIANG, XU MINGXIA, CHEN WEISONG, GE YANHUA
Format:	Patent
Sprache:	chi ; 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:	The invention discloses a DCDC converter current limiting device, and belongs to the electrical field. The DCDC converter current limiting device comprises a sampling module, a current limiting module and a control module, wherein the sampling module is used for sampling output of a DCDC converter to obtain output voltage and output current; the virtual resistance adjusting module is used for receiving the output current transmitted by the sampling module to adjust the virtual resistance, increasing the virtual resistance when the output current is greater than a current limiting value, and reducing the virtual resistance when the output current is smaller than the current limiting value to be zero to the minimum; the virtual output voltage module is used for receiving the virtual resistance transmitted by the virtual resistance adjusting module, connecting the virtual resistance with an actual load in series to serve as an equivalent load, receiving the output voltage and the output current transmitted by th