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Static DC to sinusoidal AC inverter using techniques of high-frequency pulse-width modulation

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5 Author(s)
Yu, Yuan ; Duke University, Durham, N.C. ; Wilson, T.G. ; Babaa, I. ; Feng, S.
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A dc to sinusoidal ac inverter is described in which high-frequency pulse-width modulation is used to provide a low-frequency sine-wave output without the need for either a low-frequency power transformer or for low-frequency filter components. The inverter is physically simple and has low weight and small size. From a practical viewpoint the usefulness of this inverter is further enhanced by its self-regulating property. An analysis of this circuit and its output waveform is also given which provides the mathematical basis for the experimentally observed test results. In addition to the proof of the self-regulating property, it is further proven analytically that the amplitudes of the harmonics of the sinusoidal output voltage are very small with respect to the amplitude of the fundamental voltage.

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Magnetics, IEEE Transactions on  (Volume:3 ,  Issue: 3 )