Optimal design of active EMC filters

Abstract

Abstract. A recent trend in automotive industry is adding electrical drive systems to conventional drives. The electrification allows an expansion of energy sources and provides great opportunities for environmental friendly mobility. The electrical powertrain and its components can also cause disturbances which couple into nearby electronic control units and communication cables. Therefore the communication can be degraded or even permanently disrupted. To minimize these interferences, different approaches are possible. One possibility is to use EMC filters. However, the diversity of filters is very large and the determination of an appropriate filter for each application is time-consuming. Therefore, the filter design is determined by using a simulation tool including an effective optimization algorithm. This method leads to improvements in terms of weight, volume and cost.

A Study on EMI Noise Countermeasure Design of a Dishwasher

“…The CE measurement results after the improvement are shown in Figure 21. Before improvement, the maximum value was approximately 65.99 dBuV at 9.74 MHz, but after improvement, it reached a maximum of 40.72 dBuV at 9.05 MHz [17][18][19].…”

Common mode chokes and optimisation aspects

“…Filtering the transmission wires is a challenge, which often leads to redesigned filters, tested in a "trial and error" procedure and optimised only rarely in terms of weight, size or costs (Mayer, 1998). These optimisations are required, especially for applications in modern aircraft (Derouineua, 2009;Kut et al, 2013a;Chand et al, 2013). Therefore, an advanced method is presented to measure the impedances of the power converter to improve the performance of the filter (Tarateeraseth et al, 2011;See and Deng, 2004;Kut et al, 2013b).…”