Harmonic blocking converter system
Patent
·
OSTI ID:131956
A harmonic blocking converter system for converting power between an AC source and a DC source includes a harmonic blocking transformer and a converter which generates undesirable harmonic currents including fifth and seventh harmonic components. The harmonic blocking transformer includes a polyphase main transformer and a harmonic blocker coupled with wye and delta secondary windings of the main transformer, so as to substantially block passage of the fifth and seventh harmonic currents to the AC source. A waveform enhancer may couple the harmonic blocking transformer with the converter. The converter may be constructed for 2-level operation, or, with the addition of auxiliary diodes, for 3-level operation. Such a harmonic blocking transformer and a method of blocking undesirable harmonic currents are also provided. 46 figs.
- Assignee:
- Electric Power Research Inst., Palo Alto, CA (United States)
- Patent Number(s):
- US 5,446,643/A/
- Application Number:
- PAN: 8-193,442
- OSTI ID:
- 131956
- Country of Publication:
- United States
- Language:
- English
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