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دانلود رایگان مقاله Circuit-Oriented Treatment of Nonlinear Capacitances in Switched-Mode Power Supplies

• ایران سوئیچینگ
• Iran Switching
• مقالات انگلیسی سوئیچینگ
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FEBRUARY 2015

IEEE TRANSACTIONS ON POWER ELECTRONICS

Circuit-Oriented Treatment of Nonlinear Capacitances in Switched-Mode Power Supplies

 

Abstract

Nonlinear, voltage-dependent capacitances of power semiconductor devices are capable of having significant impact on the operation of switched-mode power converters. Particularly at high switching frequency, these nonlinearities play a significant role in determining switching times, losses, and converter dynamics during switching transitions. In order to accommodate the wellestablished design and analysis techniques commonly used for linear circuits, this paper examines the nonlinear voltage-dependence of switching device capacitances and proposes a circuit-oriented analysis technique that allows the parasitic capacitances to be replaced with linear equivalents. The multitude of developed equivalents are verified through full nonlinear simulation in both MATLAB/Simulink and SPICE, as well as through experimental results.

Index Terms—Equivalent circuits, linearization techniques, nonlinear circuits, parasitic capacitance, power semiconductor devices.

 

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