Low-loss power current inverter

• Main Authors: AXEL MERTENS, MANFRED BRUCKMANN
• Format: Patent
• Language: English
• Published: 28.10.1998
• Edition: 6
• Subjects: 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; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

PCT No. PCT/DE96/01754 Sec. 371 Date Jun. 19, 1998 Sec. 102(e) Date Jun. 19, 1998 PCT Filed Sep. 17, 1996 PCT Pub. No. WO97/13315 PCT Pub. Date Apr. 10, 1997A low-loss power inverter is provided. Each inverter phase includes an upper and a lower bridge half, each having two power semiconductor switches, with antiparallel-connected diodes, with one tie point of the power semiconductor switches being connected using an isolating diode to a tie point of a d.c. intermediate circuit, an auxiliary circuit consisting of an upper and a lower auxiliary switch and a resonant inductor is provided, and at least one resonant capacitor is provided for power semiconductor switches of the inverter phase. This yields a low-loss power inverter which combines the advantages of a three-point inverter with those of an ARCP inverter.