![]() Line filters are a very effective EMC measure, but a time-consuming and ineffective trial-and-error approach can only be avoided if the input and output impedances of the filters are characterized and known. Ensuring the electromagnetic compatibility (EMC) of these miscellaneous systems within the electric vehicle is a new challenge for the developing engineers. ![]() The driving power is transmitted via cables, which are routed close to various communication, sensor or control units. Measurements of S21 and radiated emissions after adding these improvements demonstrated that they were able to reduce emissions by 10-20 dB, thus confirming the accuracy of the model and its ability to improve understanding of emission mechanisms and to guide development of emissions reduction strategies.Īt present, electric traction systems are introduced into automotive applications. Once built, this model was used to identify structures responsible for resonances and to determine possible improvements of the power inverter design to reduce emissions. The model was able to predict transfer characteristics between ports of the inverter within 4 dB from 100 kHz to 100 MHz. This model was validated through measurements. To improve inverter system design strategies, a detailed measurement-based SPICE model of a power inverter system was built in which there is a straightforward correlation between system geometry and parasitic circuit elements. While models of power inverters have been built in the past to predict emissions, they are typically “black box” models where the cause of and solution to emissions problems is difficult to analyze. Rapidly switching semiconductors in modern high power inverter/motor-drive systems generate fast changing voltages and currents which may result in unwanted emissions. The paper presents the preliminary analysis in simulation environment and its experimental validation. The acquired polynomial equations were implemented in a digital system to real-time operation. ![]() Through a very basic methodology, the polynomial equations that drive the control angles were detected for a single-phase five-level CHBMI. ![]() The same concept, known as “voltage cancelation”, used for single-phase cascaded H-bridge inverters, has been applied at a single-phase five-level cascaded H-bridge multilevel inverter (CHBMI). Therefore, the voltage waveform taken into account is different respect traditional voltage waveform. The proposed method allows for mitigation of the first-five harmonics (third, fifth, seventh, ninth, and eleventh harmonics), to reduce the complexity of the required procedure and to allocate few computational resource in the Field Programmable Gate Array (FPGA) based control board. In this paper, a novel approach to low order harmonic mitigation in fundamental switching frequency modulation is proposed for high power photovoltaic (PV) applications, without trying to solve the cumbersome non-linear transcendental equations. This paper aims to provide a comprehensive insight on Lithium-ion battery recycling for scientific research and industrial applications, examining the economic, technical and environmental aspects of this topic. Furthermore, recycling Lithium-ion batteries has significant environmental benefits, such as containing the risk of chemical pollution and improving safety in storage facilities for exhausted batteries worldwide. Recycling materials from used Lithium batteries can also moderate the price of virgin materials, by reducing the price disposal as well as the dependence of manufacturers on exporting countries. Thus, Lithium batteries are increasingly used in onboard energy storage systems, leading new economical, technical and environmental challenges which are of fundamental importance in this early stage for the next automotive generation. Hybrid and electric vehicles feature a transmission drive with one or more electrical motors powered by Lithium batteries. In the last few years, the automotive industry has been moving towards fuel-free and economically sustainable alternatives, motivated by the latest trends in the market and new regulations about CO2 emissions.
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