Radiation noise reduction using spread spectrum for inductive power transfer systems considering misalignment of coils
Radiation noise reduction using spread spectrum for inductive power transfer systems considering misalignment of coils
复制标题
考虑线圈未对准的情况下，使用扩频技术降低感应电力传输系统的辐射噪声
DOI：
10.1109/ecce.2017.8096919
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
J. Itoh
中科院分区：
文献类型：
--
作者：
K. Kusaka;K. Inoue;J. Itoh
本文提出了扩频方法来降低感应电能传输（IPT）系统引起的辐射噪声。提出了一种利用扩频技术进行降噪的方法。所提出的降噪方法随机地改变逆变器的输出频率在79至90 kHz的范围内。改变输出频率，辐射噪声在频域中扩散。以前的研究提出了有偏概率分布的扩频方法，提高了降噪性能。然而，合适的概率分布还不清楚。本文提出了两种有偏概率分布的扩频方法，它们与IPT系统的输入阻抗成正比和反比。对所提出的方法进行了评估，并与传统的降噪方法进行了比较。在考虑系统输入阻抗的情况下，与恒频工作相比，线圈不对中和线圈不对中情况下，IPT系统的辐射噪声分别降低了13.4dB μA和7.0dB μA。此外，与传统的扩频方法相比，降低性能得到改善。
This paper proposes spread spectrum methods to reduce radiation noise caused by an inductive power transfer (IPT) system. A noise reduction method with spread spectrum techniques has been proposed. The proposed noise reduction method randomly changes the output frequency of an inverter within a range of 79-to-90 kHz. Changing the output frequency, the radiation noise is spread in a frequency domain. A previous study has proposed the spread spectrum method with the biased probability distribution, which improves the noise reduction performance. However, the suitable probability distribution has not been clear. This paper proposes two spread spectrum methods with biased probability distributions, which are proportional and inverse proportional to an input impedance of the IPT system. The proposed methods are assessed and compared with the conventional noise reduction method. Considering the input impedance of the IPT system, the radiation noise from the IPT system with or without the coil misalignment is reduced by 13.4 dBμA and 7.0 dBμA in comparison with the constant frequency operation. Moreover, the reduction performance is improved compared to the conventional spread spectrum method.
影响因子：
1.7
作者：
H. Ishida;Hiroto Furukawa;T. Kyoden
通讯作者：
H. Ishida;Hiroto Furukawa;T. Kyoden