Multilevel cascade voltage source inverter with separate DC sources
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. 15 figs.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Lockheed Martin Energy System, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- US 5,642,275/A/
- Application Number:
- PAN: 8-527,995
- OSTI ID:
- 512412
- Resource Relation:
- Other Information: PBD: 24 Jun 1997
- Country of Publication:
- United States
- Language:
- English
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Multilevel cascade voltage source inverter with seperate DC sources
Multilevel cascade voltage source inverter with seperate DC sources