Introduction to Power Converter Concepts

Throughout the following posts, basic concepts of the electrical energy conversion process, together with indicators of conversion quality, are introduced. We need to establish a specific set of objectives for a converter. It is important to identify performance measures to determine ether objectives are being met. How can user expectations for a power supply be translated into design goals? How […]

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Fourier Series of Full-Wave Rectifier Circuit

In an earlier post, we established that there is typically only a single component of the Fourier Series desired in most cases. All other components are effectively noise. An example of a typical full-wave rectifier circuit will help to illustrate this idea. Let’s compute the Fourier Series of a full-wave rectified signal . What is the fundamental frequency? Which is […]

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The Significance of Fourier Analysis

The switch action in a conversion circuit is most often periodic. The waveforms themselves are rather choppy and sometimes discontinuous. We must form an approximate DC output of a rectifier, for instance, by piecing together ‘chunks’ of the AC input. Given the strange waveforms and the periodic action, how can we determine whether a conversion operation is successful? What filtering is […]

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