【摘要】 针对现在有源电力滤波器应用要求,提出了一种新型的注入式混合有源电力滤波器拓扑结构,这种新型有源电力滤波器能补偿一定的无功,注入电路采用基波谐振的方法大大降低了有源滤波器的容量,使其适用于高压系统中。在分析系统的滤波原理的基础上建立了系统的数学模型。在考虑系统参数的选择上,分析了系统的动态过程,建立了电网电压与有源滤波器直流侧电压微分方程的关系。通过仿真实验验证了系统模型与参数选择的有效性。更多还原

【Abstract】 Compared with hybrid active power filter widely used at present, a novel high capacity hybrid power filter based on injection circuit is proposed here to meet the requirements of harmonic elimination. The novel APF can compensate reactive power. The resonance in the injection circuit reduces the capacity of active power filter. And the hybrid power filter can also be applicable in high power system. The principle of the system is discussed and the math model is built. The dynamic process of the system is analyzed, the differential equation relation of the voltage of the power network and the DC voltage of the active power filter is set up. The simulation experiments validate the efficiency of the system model and the selection of the preferences.更多还原