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An improved power converter model is developed by combining the average and discrete modeling techniques. The parameter determination of the proposed discrete-average model is shown to be dependent on the type of duty cycle control law, and the accuracy of the model is shown to depend on the nature of the error processor used in the feedback loop.
The limit on the practical range of output frequencies of a cycloconverter for a.c. motor speed control is due mainly to the presence of low frequency distortion components in the output voltage waveform. This paper presents the results of an investigation which showed that these distortion components can be attenuated by applying the communications engineering principles of sampling and pulse position...
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