电力电子设备在本地配电网的高渗透趋势导致谐波源密集化、分散化、广域化，传统点对点的谐波治理方式存在弊端。基于功率因数校正（power factor correction，PFC）变换器和典型的本地配电网模型，研究了非线性负荷与Boost PFC变换器之间的相互影响，研究结果表明传统峰值电流控制Boost PFC变换器具有一定的谐波补偿能力，但其谐波补偿效果较差；基于此，提出了一种与临界连续峰值电流控制Boost PFC变换器相匹配的前馈谐波解耦控制方法，以实现对本地配电网中非线性负载谐波的自适应补偿；同时，考虑不同的本地配电网工况，阐述了单台Boost PFC变换器的谐波补偿控制环路设计及其谐波补偿能力。最后，搭建了一台基于前馈谐波解耦控制的160 W Boost PFC样机对理论分析进行实验验证，验证了理论分析的正确性与可行性。
英文摘要:
The high penetration trend of power electronic equipment in local distribution network has led to the concentration, decentralization and wide area of harmonic sources, and the traditional point-to-point harmonic suppression is no longer applicable. Based on the power factor correction (PFC) converter and typical local distribution network model, this paper studies the interaction between nonlinear load and Boost PFC converter. The research results show that the traditional peak current controlled Boost PFC converter has weak harmonic compensation ability. On this basis, a feedforward harmonic decoupling control method matched with the critical continuous peak current controlled Boost PFC converter is proposed to realize the adaptive compensation of nonlinear load harmonics in the local distribution network. Meanwhile, considering different local distribution network conditions, the design of harmonic compensation control loop and the harmonic compensation capability of a single Boost PFC converter are analyzed. Finally, a 160 W feedforward harmonic decoupling controlled Boost PFC prototype is built to verify the theoretical analysis. The results verify the correctness and feasibility of the theoretical analysis.
