Experimental verification of an EMC filter used for PWM inverter with wide band-gap devices
Experimental verification of an EMC filter used for PWM inverter with wide band-gap devices
复制标题
宽带隙器件PWM逆变器EMC滤波器的实验验证
DOI：
10.1541/ieejjia.4.212
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
K. Orikawa
中科院分区：
文献类型：
--
作者：
J. Itoh;Takahiro Araki;K. Orikawa
本文讨论了一种用于宽禁带PWM逆变器的EMC滤波器和冷却系统。首先从理论上估算了用于电磁兼容滤波器的共模扼流圈和差模扼流圈等电抗器的体积。然后，通过仿真，明确了PWM逆变器的载波频率与滤波电抗器总体积之间的关系。此外，根据实验结果计算了载波频率与冷却系统体积之间的关系。结果，与通过使用一级滤波器的150 kHz的载波频率的情况相比，通过使用两级滤波器，包含滤波电抗器和冷却系统的逆变器系统的总体积在300 kHz的载波频率下将减小54%。此外，一个感应电动机是由一个原型的GaN-FET逆变器系统与300 kHz的载波频率驱动。结果，传导噪声被抑制在CISPR的极限以下。因此，所提出的电磁兼容滤波器设计方法在实验中是有效的。此外，EMC滤波器的功率损耗与GaN-FET逆变器系统的总损耗相比小于2%。
This paper discusses a volume of an EMC filter and a cooling system that are used for a PWM inverter with wide band-gap devices. At first, the volume of reactor that is used for EMC filter such as common mode coke coils and differential mode choke coils are estimated by theoretically. Then, the relationship between the carrier frequency of the PWM inverter and the total volume of filter reactors are clarified by simulation. Moreover, the relationship between the carrier frequency and the volume of a cooling system is calculated based on experimental results. As a result, the total volume of the inverter system that contains filter reactors and cooling system will be reduced by 54% at the carrier frequency of 300 kHz by using a two stage filter compared to case of the carrier frequency of 150 kHz by using one stage filter. In addition, an induction motor is driven by a prototype of GaN-FET inverter system with a 300-kHz carrier frequency. As a result, the conduction noise is suppressed below the limit of CISPR. Therefore, the proposed design method for EMC filters is valid in the experiment. Furthermore, the power loss of EMC filter is less than 2% compared with the total loss of the GaN-FET inverter system.