Electric power conversion systems – Current conversion – Using semiconductor-type converter
Reexamination Certificate
2005-11-14
2008-10-07
Patel, Rajnikant B (Department: 2838)
Electric power conversion systems
Current conversion
Using semiconductor-type converter
C363S041000
Reexamination Certificate
active
07433216
ABSTRACT:
A controller applies a pattern of pulses to switching elements within a multi-level controller to effectuate control of the fundamental voltage magnitude and phase associated with the converter, as well as providing harmonic minimization of the 5thand 7thlevel harmonics. The controller combines a first pattern of pulses with a second pattern of pulses phase shifted by an amount based on the desired fundamental voltage magnitude to create a third pattern of pulses. The controller applies a phase shift to the third pattern of pulses based on the desired fundamental voltage phase. The controller supplies switching control waveforms to active components within the multi-level controller based on the phase shifted third pattern of pulses such that the desired fundamental voltage magnitude and phase is generated and selected harmonics are minimized.
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Hamilton Sundstrand Corporation
Kinney & Lange , P.A.
Patel Rajnikant B
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