DC POWER SOURCE

PURPOSE:To limit a switching loss generated in a transient state of a PWM switching of a semiconductor switch, to simplify a semiconductor cooling system and to enhance an upper limit of an allowable switching frequency in a DC power source. CONSTITUTION:A DC power source 1 is connected to a primary...

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Bibliographische Detailangaben
Hauptverfasser:	ATO SATOSHI, YOSHIIKE HITOSHI, SEKINO YOSHIHIRO
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 limit a switching loss generated in a transient state of a PWM switching of a semiconductor switch, to simplify a semiconductor cooling system and to enhance an upper limit of an allowable switching frequency in a DC power source. CONSTITUTION:A DC power source 1 is connected to a primary winding of a transformer T through a semiconductor switch, and a secondary winding of the transformer is connected to a smoothing filter 2 of a parallel circuit of a reactor Ld and a capacitor Cd through rectifying diodes D5-D8. A DC power source in which a parallel circuit of a diode and a semiconductor switch and a resonance switch 3 formed of a resonance capacitor CR connected in series with the parallel circuit are provided in parallel at the DC output side of the diodes D5-D8, in the DC power source for energizing a load RL from the capacitor Cd, is obtained.