Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 15, 2018 - October 16, 2018
Power electronics equipment is used for electric power conversion in hybrid cars, which are attracting attention in recent years due to high environmental performance. Since the electromagnetic noise emitted by the power electronics equipment adversely affects other electronic equipments and the control circuits of power electronics equipment itself, an electromagnetic compatibility (EMC) standard is defined in order to prevent this harmful effect. Normally, a noise filter circuit for suppressing a high-frequency noise current is provided around the power electronics device in order to achieve a design conforming to the EMC standard. Since the performance of the noise filter is influenced by the magnetic flux generated from the current loop on the circuit, the design of the conductor pattern shape is important for improving the performance of the circuit. However, it is difficult to design circuits by quantitatively predicting the influence of magnetic flux. To solve such problem, filter performance can be improved by using topology optimization that enables structure optimization with high degree of freedom. In addition, many electronic circuits are designed as double-sided boards with different patterns on the front and back sides, and the design considering the influence of the magnetic flux becomes more complicated. In this research, we aim to obtain higher noise suppression performance by simultaneously optimizing the front and back of the filter substrate as the design domain by creating the boundary matching mesh on both sides.
