Three-level switching power supply system

The utility model discloses a three-level switching power supply system, which comprises a BOOST converter, a resonant converter and a rectifying circuit which are connected in sequence, wherein the first switch tube is connected with the second switch tube in series, the source electrode of the sec...

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Bibliographische Detailangaben
Hauptverfasser:	LYU YOUGEN, HE WEIJUN, LUO RUIJIE
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 utility model discloses a three-level switching power supply system, which comprises a BOOST converter, a resonant converter and a rectifying circuit which are connected in sequence, wherein the first switch tube is connected with the second switch tube in series, the source electrode of the second switch tube is connected with the cathode of the second diode, the anode of the second diode isconnected with the resonant converter, the second diode is arranged on the cathode bus, and one end of the first capacitor is connected with the cathode of the first diode. Only one inductor is needed; the three-level BOOST transformer is driven in a staggered manner; ripples of inductive current are greatly reduced, inductive loss can be effectively reduced, ripple voltage and ripple current on abus capacitor are effectively suppressed, and a BOOST converter, a resonant converter and a rectifying circuit are combined to form the efficient, low-cost and high-reliability switching power supplyof which the withstand vol