A dual three-phase active bridge (D3AB) power factor correction (PFC) rectifier features two dc ports, i.e., one on the primary side, which is not isolated from the mains, and the second, which is galvanically isolated dc port on the secondary side. A model for calculating the conducted electromagnetic interference (EMI) noise of a 7.5-kW D3AB PFC rectifier operating from a 400 V $_\mathrm{rms}$ line-to-line mains and generating dc output voltages of $V_{\mathrm{dc,1}} =$ 800 V and $V_{\mathrm{dc,2}} =$ 400 V is presented in this article. The EMI model takes into account the implications of the power levels provided at the primary- and secondary-side dc ports, i.e., $P_{1}$ and $P_{2}$ , respectively, on the conducted EMI noise and is used to design an EMI filter for a hardware prototype of the D3AB converter topology, which is volume-optimized for the considered specifications. The designed filter has a volume of $0.17\,\text{dm}^{3} = 10.\text{4}\;\text{ in}^{3}$ ( $0.09\text{ dm}^{3} = 5.5\text{ in}^{3}$ for the differential mode filter and $0.08\text{ dm}^{3} = 4.9\text{ in}^{3}$ for the common mode filter part). As part of the experimental verification of the model, the conducted EMI noise of the hardware prototype is measured under two different workload scenarios, i.e., $P_{1} = \text{4}\;\text{ kW}$ , $P_{2} = \text{2.5}\;\text{ kW}$ and $P_{1} = 0$ , $P_{2} = 6.5\text{ kW}$ . Measurements show that the level of conducted EMI noise increases with increasing load on the secondary side, which is consistent with the predictions of the noise model. The complete hardware prototype achieves sinusoidal mains currents with a power factor of $\lambda = 0.994$ and a total harmonic distortion of currents lower than $5.6\%$ at the considered loads and complies with the CISPR 11 class A quasi-peak conducted EMI limit.

中文翻译：

---

用于集成双三相有源桥 (D3AB) PFC 整流器的 EMI 滤波器设计

双三相有源桥 (D3AB) 功率因数校正 (PFC) 整流器具有两个直流端口，即一个在初级侧，不与主电源隔离，第二个是电隔离直流端口，位于二次侧。用于计算 7.5 kW D3AB PFC 整流器在 400 V 电压下运行的传导电磁干扰 (EMI) 噪声的模型 $_\mathrm{rms}$线对线电源和产生的直流输出电压$V_{\mathrm{dc,1}} =$800 V 和$V_{\mathrm{dc,2}} =$本文介绍了 400 V。EMI 模型考虑了初级和次级直流端口提供的功率水平的影响，即$P_{1}$和$P_{2}$ ，分别用于传导 EMI 噪声，并用于为 D3AB 转换器拓扑的硬件原型设计 EMI 滤波器，该拓扑针对所考虑的规格进行了体积优化。设计的过滤器的体积为$0.17\,\text{dm}^{3} = 10.\text{4}\;\text{ in}^{3}$( $0.09\text{ dm}^{3} = 5.5\text{ in}^{3}$对于差模滤波器和$0.08\text{ dm}^{3} = 4.9\text{ in}^{3}$共模滤波器部分）。作为模型实验验证的一部分，硬件原型的传导 EMI 噪声是在两种不同的工作负载场景下测量的，即$P_{1} = \text{4}\;\text{ kW}$ ,$P_{2} = \text{2.5}\;\text{ 千瓦}$和$P_{1} = 0$ ,$P_{2} = 6.5\text{ 千瓦}$ . 测量表明，传导 EMI 噪声水平随着次级侧负载的增加而增加，这与噪声模型的预测一致。完整的硬件原型实现了正弦电源电流，功率因数为$\lambda = 0.994$和电流的总谐波失真低于$5.6\%$在所考虑的负载下，并符合 CISPR 11 A 类准峰值传导 EMI 限制。