Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate
2006-02-14
2009-02-24
Riley, Shawn (Department: 2838)
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
C363S097000, C363S172000
Reexamination Certificate
active
07495938
ABSTRACT:
Three-level inverter and rectifier power conversion systems and space vector modulation (SVM) controls having even-order harmonic elimination for neutral voltage balancing with a predefined vector switching sequences for half-wave symmetry in open loop system operation. The vector sequence listings for each SVM diagram segment includes switching state entries individually indicating one of three possible switching state levels positive (P), zero (0), or negative (N) for each of three or more switching groups of the power conversion system, with listings for each pair of first and second diametrically opposite diagram segments include symmetrically opposite switching states, with positive levels in the entries of the listing for the first segment corresponding to negative levels in the entries of the listing for the second segment and vice versa.
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Feng Weixing
Liu Congwei
Rizzo Steven C.
Wu Bin
Zargari Navid R.
Fay Sharpe LLP
Kuszewski Alexander R.
Riley Shawn
Rockwell Automation Technologies Inc.
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