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Previous works on interleaved operation of switching power converters are based on the assumption that natural-sampling pulsewidth modulation (PWM) is used. Various interleaving strategies have been reported to minimize EMI filtering requirements, eliminate system resonance at certain frequencies, or minimize total harmonic current distortion through optimization of the interleaving phase shift angles...
Electromagnetic interference (EMI) and its filtering are important considerations in switching power converter design. It has been recognized that an EMI filter must be sufficiently damped in order to avoid undesirable interactions with the converter or the source, which otherwise may lead to instability and degraded control performance. Optimal damping of single-stage LC filters that achieves maximal...
Multilevel voltage-source converters (VSC) are attractive for high-voltage and high-power applications. However, the increased part counts and control complexity also complicate the converter modeling and control. One particular control problem is the balancing of dc capacitor voltages. Conventional voltage balancing control design has been based on periodic steady-state or line-cycle averaged models...
This paper presents a systematic method for modeling small-signal input impedance of line-frequency AC-DC converters. The objective is to develop proper models that can be used for stability analysis of AC power systems with significant DC loads powered by such converters. The proposed modeling method uses harmonic linearization and Fourier analysis techniques to describe the current and voltage mapping...
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