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Total voltage sources and Thevenin equivalent circuits are derived by measurements and simulations using IBIS models to characterize the conducted emissions from ICs. The constructed noise source model for a test IC is applied in systemlevel simulations and the calculated far field radiation is validated with measurements. The agreement between simulated and measured results demonstrates the effectiveness...
The impact of near-field scanning sizes on the accuracy of far-field estimations is studied using a U-shape trace above a large ground plane as an example. Simulation model is built in commercial software and the planar near fields above the trace are obtained. Fourier Transform of the planar near fields is used to calculate the far-field radiations. Different sizes of planar scanning area are chosen...
A procedure is proposed to extract equivalent dipole-moment model for the real integrated circuit (IC) from the near-field scanning data. The radiation fields from the extracted dipole-moment model match well with the measured ones in both near- and far-fields. Therefore, the dipole-moment model can be applied to take the place of real IC in the full-wave simulation tools, to predict the IC's radiated...
Now, the main way to solve the conducted electromagnetic interference of power converter is “testing -> modifying -> testing”. This causes delivery delays and cost increases. This paper presents a flow for solving these problems. The whole-link circuit models of active clamp forward (ACF) converter are constructed based on the CE noise sources and paths. The conducted emission (CE) noise can...
In this paper, a photovoltaic (PV) system with energy storage elements (ESEs) is built in Real Time Digital Power System Simulator (RTDS) which is the partial work of future hardware-in-the-loop study of high-penetration multiple PV systems. Cascaded-multilevel inverter is applied as the power electronics interface among the PV array, batteries and grid. The H-bridges are modeled in RTDS small time-step...
This paper presents a novel model for average current control that can be applied to the buck-cascaded buck-boost converter (BuCBB) with two independently controlled switches in universal input power factor correction (PFC) circuits. The proposed BuCBB PFC model consists an averaged BuCBB topology with all the switching elements replaced by dependent sources and an average current control scheme with...
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