Differential Mode Noise Estimation and Filter Design for Interleaved Boost Power Factor Correction Converters

Abstract

Interleaved power factor correction (PFC) is widely used circuit topology due to good efficiency and power density for single-switch boost PFC. As the differential mode (DM) electromagnetic interference (EMI) noise magnitude depends upon the input current ripple, this research details a comprehensive study of DM EMI filter design for interleaved boost PFC with the aim of minimizing the component size. It is also demonstrated that the different numbers of interleaved stages and switching frequency influence the filter attenuation requirement and, thus, the EMI filter size. First, an analytical model is derived on the basis of the Norton equivalent circuit model for the differential mode noises of interleaved boost PFC within the frequency range of 9–500 kHz. The derived model can help identify the proper phase shifting among the interleaved boost converters in order to minimize the considered differential mode noises at the filter design frequency. So, a novel phase-shift method is developed to get a minimized attenuation required by a filter in Band B. Further, a volume optimization of the required DM filter was introduced based on the calculated filter attenuation and volumetric component parameters. Based on the obtained results, unconventional and conventional phase shifts have demonstrated a good performance in decreasing the EMI filter volume in Band B and Band A, respectively. A 2-kW interleaved PFC case study is presented to verify the theoretical analyses and the impact of phase-shifting on EMI filter size.

Special Issue on Power Converters: Modelling, Control, and Applications

“…The authors discussed an active gate driver for the SiC MOSFET module. Nourani Esfetanaj et al [2] presented the problem of electromagnetic compatibility when using power factor correction which is almost always obligatory now for power loads. The paper presents the study of a differential mode EMI filter design for the interleaved boost power factor corrector to minimize the component size.…”

“…Summarizing the first Special Issue edition, papers [1,5,7,9] referred to the design and modelling of the inverters including motor drives, papers [3,4] concerned the implementation of renewable energy sources, papers [2,3,6] described DC/DC converters and their control, and [2] was devoted to the electromagnetic compatibility of the power factor corrector, and paper [8] presented electrothermal model of the components of the power converters. All the expected key areas were presented in the first Special Issue.…”

Estimation of Common Mode noise and Differential Mode noise generated by DC-DC Power Converters

“…Power converters come in a wide variety of forms, each with a special layout and set of capabilities. DC-DC, AC-DC, and DC-AC converters are a few examples of common power converter types [7][8][9][10][11]. Common-mode noise and differential-mode noise are both known to be produced by power converters.…”

A Unified Differential Mode Noise Estimation Method and Filter Size Comparison in Single-Phase Multileg and Multilevel Totem-Pole PFC Converters

“…In [13] and [14], DM noise estimation is analyzed for single-leg and two-leg interleaved topologies under a limited frequency range of 9-150 kHz. On the other hand, the works [15] and [16] cover both frequency bands, i.e., 9-150 kHz and 150-30 MHz for two-leg interleaved CCM boost PFCs. In [9], a generalized DM noise estimation approach is proposed; however, the impedance modeling of the converter needs to be obtained with the help of experimental data, and the necessity to solve a set of linear equations prolongs the process.…”

“…The DM noise estimation methods presented in [10], [11], and [12] require extensive model-based simulations that are time consuming and are topology-specific. The studies presented in [13], [14], [15], and [16] adopt an analytical approach with equivalent circuit modeling, which considers the switch node voltages as DM noise sources and then time-domain signals are converted to the frequency domain using fast Fourier transform (FFT). These approaches are not generalized and involve extensive mathematical computations.…”