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Damping of EMI filter input impedance to avoid resonance with the source output impedance is presented. Optimization of the damping resistor to maximize the damping effects for a given damping capacitor or inductor while minimizing the power loss is proposed. Three different damping circuits are studied, and for each, an analytical model defining the optimal damping resistance is presented. Performances...
This paper presents control design optimization for an asymmetric half-bridge (AHB) converter with current-doubler-rectifier (CDR) for high-performance airborne applications. An accurate dynamic model will be first developed by taking into account the zero-voltage switching transition. Input voltage feedforward control is used to improve line regulation. A simple linear feedforward control law is...
This paper presents a new current control method for dual-boost power-factor-corrected (PFC) converters which avoids the need for sensing the ac input current. The control method is a generalization to the nonlinear average current control previously developed for boost PFC converters that has demonstrated better control performance and reduced sensitivity to noise. The generalized method for dual-boost...
The development of single-phase power factor correction (PFC) technologies was traditionally driven by the need for computers, telecommunication, lighting, and other electronic devices and systems to meet harmonic current limits defined by IEC 61000-3-2 and other regulatory standards. Recently, several new applications have emerged as additional drivers for the development of the technologies. One...
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