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Conductive EMI noise analysis for switched reluctance machine (SRM), including noise diagnosing by the separator and noise suppression, are presented in this paper. Firstly, the CM and DM noise current loops in SRM's power converter are discussed, and the noise separator based on 0°/180° splitter is employed for noise diagnosis. Then, the EMI filer design and the radiator-ungrounded method are proposed...
In this paper, a new method is proposed to test the conducted electromagnetic interference (EMI) noise of new energy based on analysis the internal structure and measuring principle of line impedance stabilization network. A more accurate measurement of conducted EMI noise in new energy system can be provided by this method in order to design the appropriate filter for conducted EMI noise suppression...
Traditional electromagnetic (EM) measurement can't identify the electromagnetic interference (EMI) noise mechanism. In the paper, a novel method is proposed to analysis the radiated EMI noise sources by modern signal process. Then, the near field wave impedance approach is present to diagnosis the mechanism of radiated EMI noise. The results show that the suggested method is more valid, effective...
In conductive electromagnetic interference (EMI) noise measurement, noise separation is important for noise diagnosis and suppression. Compared with conventional hardware-based separation, the noise soft separation, which is based on modern signal processing technique, is more robust, convenient and cheap. However, the non-ideal spectrum performance of current probes may have effects on the separation...
Conclusions The electronic properties of Au/Si interface are investigated with a homemade ballistic-electron-emission microscope. The spatial distribution of Schottky barrier height is detected. Irreversible changes of ballistic transmittance of local interface with typical size of a few hundred of angstroms in diameter are observed by raising the tip voltage temporarily. Ballistic-electron-emission...
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