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Switching of power electronic equipment mounted in vehicles generates unwanted electromagnetic radiation and interferes with radios. In particular, it is difficult to secure performance in the AM radio band because its frequencies are near switching frequencies. In order to reduce extraneous electromagnetic radiation from power electronic equipment, identifying noise sources and propagation paths...
An efficient and practical method is proposed for finding all characteristic curves of piecewise-linear resistive circuits using integer programming. In this method, the problem of finding all characteristic curves is formulated as a mixed integer programming problem, and it is solved by a high-performance integer programming solver such as CPLEX. It is shown that the proposed method can easily be...
In AC/DC converters for on-board chargers, the DC-link capacitor on the output side in a power factor correction (PFC) converter uses aluminum electrolytic capacitors in order to obtain a large capacitance with low voltage ripple and small size. Therefore, it is necessary to reduce the capacitance when using film capacitors without increasing the size of the converter in order to realize a capacitor...
A laminated core has advantages such as low loss, high permeability, and high saturation flux density. For inductor applications, an air gap has to be inserted into the magnetic circuit to avoid saturation at lower magnetic field strengths. However, when an air gap is inserted, fringing flux leaks out of the air gap and concentrates on the surface of the core. As a result, the iron loss increases...
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