期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 20, 期 5, 页码 1075-1083出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2005.854029
关键词
ergodic; power electronics; quantization; Sigma Delta modulation; spectral analysis; voltage source inverter (VSI)
Design techniques for Sigma Delta modulators from communications are applied and adapted to improve the spectral characteristics of high frequency power electronic applications. A high frequency power electronic circuit can be regarded as a quantizer in an interpolative Sigma Delta modulator. We review one dimensional Sigma Delta modulators and then generalize to the hexagonal sigma-delta modulators that are appropriate to three-phase converters. A range of interpolative modulator designs from communications can then be generalized and applied to power electronic circuits. White noise spectral analysis of sigma-delta modulators is generalized and applied to analyze the designs so that the noise can be shaped to design requirements. Simulation results for an inverter show significant improvements in spectral performance.
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