Inverter device and air conditioner including the same

An inverter device includes a plurality of switching circuits (5) in which first switching elements (8) including Si semiconductors and second switching element (9) including WBG semiconductors having ON resistance smaller than that of the first switching elements (8) and having switching speed high...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ITO, Norikazu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING 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 BASIC ELECTRONIC CIRCUITRY BLASTING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION HEATING LIGHTING MECHANICAL ENGINEERING PULSE TECHNIQUE RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	An inverter device includes a plurality of switching circuits (5) in which first switching elements (8) including Si semiconductors and second switching element (9) including WBG semiconductors having ON resistance smaller than that of the first switching elements (8) and having switching speed higher than that of the first switching elements (8) are connected in parallel. The inverter device includes a converting circuit (4) that converts a direct-current voltage into a desired alternating-current voltage and a driving unit (16) that generates a plurality of driving signals for respectively turning on and off the switching circuits (5). The inverter device includes, for each of the switching circuits (5), a gate circuit (17) that, based on the driving signals, turns on the second switching element (9) later than the first switching element (8) and turns off the first switching element (8) later than the second switching element (9).