Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1994-06-10
1995-12-12
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
318801, 318811, H02M 112, H02P 534, H02P 528
Patent
active
054755816
ABSTRACT:
A waveform flat-topping unit includes a signal generator for producing first, second and third reference signals and a normalizing unit for normalizing the first reference signal. A waveform generator produces a third harmonic waveform of the normalized first reference signal. A comparator compares a vector value, which is produced according to the first, second and third reference signals, to a predetermined threshold value, the predetermined threshold value being the largest realizable pure signal value. An adder in response to the comparison, adds zero to each of the first, second and third reference signals when the vector value is less than or equal to the predetermined threshold value. The adder adds the third harmonic signal to each of the first, second and third reference signals when the vector value is greater than the predetermined threshold value.
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Nguyen Matthew V.
Westinghouse Electric Corp.
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