The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes the effect of MOSFET internal capacitances on the channel current during the turn-on switching transition: an intrinsic theoretical switching speed limit is found and detailed mathematically. The set of analytical equations is solved and the effect of the displacement currents is highlighted with ideal simulated waveforms. A laboratory experiment is thus performed, in order to...
Predicting semiconductor and inductor losses together with designing the EMC filter for grid feeding inverters requires great effort, when high and variable pulse frequencies and triangular current mode are applied. In this paper an effective method is proposed to quickly evaluate the effect of circuit and control strategy on losses and inverter size. With this approach the system is modeled using...
This paper proposes a new method to indirectly consider the magnetic material of rod core coils for Partial Element Equivalent Circuit (PEEC) simulations by adapting the number of turns. This way of modeling can be extended to the coupling effects in Common Mode (CM) chokes caused by Differential Mode (DM) currents passing through them. Thereby, sufficiently accurate instant magnetic coupling modeling...
One of the oldest electromagnetic interference (EMI)-source in combustion engine vehicles is the spark plug. It causes interferences problems to surrounding electronic devices in a wide frequency range. In this contribution, this well established technology is extensively characterized and analyzed using a combination of numerical simulation and measurement from 1 kHz to 100 MHz. Based on these results,...
Since about 15 years back, there were several attempts to increase power density by double-sided cooling of power semiconductors, mostly by a sandwich stack with two DCBs. This paper gives an overview over the developments and approaches over the last years and some results of another project concerning double sided cooling.
This paper proposes a remarkably efficient modeling method of stray magnetic couplings in an Electromagnetic Compatibility (EMC) filter focusing on a dominant magnetic field in a power electronic device. The proposed modeling method is applied to a filter performance simulation of an EMC filter for a Silicon Carbide (SiC) solar inverter and its effectiveness is verified by comparing a measurement...
Electromagnetic Compatibility (EMC) filters for power electronic devices are strongly influenced by magnetic couplings between all components in the system. Therefore, several methods were proposed to predict these influences. Although a precise simulation can be realized utilizing the past methods, it is not practical to consider the all existing couplings especially for a development process in...
The presented paper investigates the relationship between high frequency oscillations created in power modules and their radio frequency noise emission. It is shown that high frequency oscillations with slew rates comparable or higher than the ones generated by the used semiconductors leads to significant higher noise emission in the radio frequency range. During turn on of the IGBT a high frequency...
The presented paper introduces a novel type of EMI optimised, balanced power modules with reduced EMI in the frequency range for radiated emissions from 30 MHz to 300 MHz. The comparison of the novel modules to a conventional module layout with same semiconductor chips shows a noise reduction up to 30 dB in the critical frequency region around 30 MHz. For frequencies above 50 MHz the noise reduction...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.