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Microprocessor-based sinusoidal waveform synthesis using Walsh and related orthogonal functions

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2 Author(s)
Asumadu, J.A. ; Power Electron. Res. Center, Missouri Univ., Columbia, MO, USA ; Hoft, R.G.

A method is described of eliminating harmonics in a pulsewidth-modulated waveform using Walsh and related functions that substitute linear algebraic equations for the nonlinear equations required in Fourier-series harmonic elimination. A microprocessor can then be used to calculate the firing angles to cancel the unwanted harmonics. In an extension of the method, it is shown that a sine wave can be synthesized from a fixed-voltage DC supply by using a reasonable number of power electronic switches

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Power Electronics, IEEE Transactions on  (Volume:4 ,  Issue: 2 )