A POWER CIRCUIT FOR IMPRESSED VOLTAGE INVERTERS, WITH (2N+1) VOLTAGE LEVELS

A POWER CIRCUIT FOR IMPRESSED VOLTAGE INVERTERS, WITH (2N+1) VOLTAGE LEVELS

The invention has for its subject-matter an impressed voltage inverter power circuit with a higher number of voltage levels than three (in general 2n+1). This circuit, of the NPC (Neutral Point Clamped) type, can provide a voltage at 2n steps in the zero to plus/minus V range across the "load&q...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: TENCONI, SANDRO MARIA
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:The invention has for its subject-matter an impressed voltage inverter power circuit with a higher number of voltage levels than three (in general 2n+1). This circuit, of the NPC (Neutral Point Clamped) type, can provide a voltage at 2n steps in the zero to plus/minus V range across the "load", through a suitable arrangement of (n) elemental filters (RC) of a resistive capacitive divider and of two series of 2n semiconductor (D,S;D',S') circuits. Using clamp diodes (DC) and suitable openings and closings of the semiconductor (D,S) circuits acting as switches the voltage load on the semiconductors (D,D') can be brought below the safe operation values of the semiconductors and equal to one n-th of the voltage V, thereby to operate in a reliable range irrespective of the value of V.