Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1991-06-28
1993-10-19
Voeltz, Emanuel T.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
363 25, 363139, 307 101, 307151, H02M 3337
Patent
active
052551792
ABSTRACT:
A DC to AC power converter is disclosed which is connectable to a DC source, and including a first and second pair of switches which converts the DC source directly to AC by alternately switching between each of the first pair of switches at high frequency modulation, and between second pairs of switches alternately switching at each of the half cycles of the low frequency fundamental output voltage, for producing a positive pulse train and a negative pulse train. A transformer boosts the source voltage to the desired high voltage of the output of the converter circuit. A filter is connectable to an AC load and having a plurality of damping modes for extracting fundamental frequency from the output of the transformer, and having a control responsive to a signal for switching between damping modes. A sine wave oscillator generates a sine wave at the fundamental frequency. Feedback circuits maintain the AC output at the fundamental frequency.
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Dellasmirra Luciano
Zekan Boze N.
Fors Arne I.
Imai Jeffrey T.
Voeltz Emanuel T.
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