Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1991-10-16
1992-11-24
Stephan, Steven L.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 98, 363132, H02M 7525
Patent
active
051668700
ABSTRACT:
A pulse width-modulation control device includes a superposed signal creating circuit for superposing a sine wave signal having a predetermined frequency upon a triangular wave signal as a carrier signal, having a frequency higher than the predetermined frequency to form a superposed signal. A pulse width modulating circuit compares the superposed signal with a predetermined threshold level to form a pulse width modulated signal. A pulse width limiting circuit limits the pulse width of the pulse width modulated signal when the pulse width modulated signal has a pulse width lying outside a predetermined range, and supplies a pulse signal having a pulse width thus limited to a switching device.
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Nakamura Masashi
Shimizu Motohiro
Honda Giken Kogyo Kabushiki Kaisha
Stephan Steven L.
Sterrett Jeffrey
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