Multilevel cascade voltage source inverter with seperate DC sour

Details Multilevel cascade voltage source inverter with seperate DC sour Multilevel cascade voltage source inverter with seperate DC sour

1995-09-14

1997-06-24

Hecker, Stuart N.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 58, H02M 7521

Patent

active

056422750

ABSTRACT:
A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations.

REFERENCES:
patent: 5270657 (1993-12-01), Wirth et al.
patent: 5311419 (1994-05-01), Shires
patent: 5481448 (1996-01-01), Nakata et al.
patent: 5535114 (1996-07-01), Horie et al.

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