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面向电网谐波的治理,研发了一种基于瞬时无功功率理论的有源电力滤波器。采用TMS320F2812作为控制核心,使用IGBT作为开关器件,通过产生与负载谐波电流次数相等、幅值相等但相位相反的补偿电流注入电网,降低电网侧的谐波含量,并减少谐波源负载对相邻设备的高频电磁干扰,同时补偿一定的无功功率。配电系统实测表明,所研发的基于瞬时无功功率理论的有源电力滤波器投运后,大幅度减少了配电系统中的谐波含量,并有效修正了电压波形。
Facing the control of power network harmonics, an active power filter based on instantaneous reactive power theory has been developed. Using TMS320F2812 as the control core and IGBT as the switching device, the compensating current with the same magnitude and the same phase but the same amplitude is injected into the power grid to reduce the harmonic content on the grid side and reduce the load on the harmonic source Neighboring equipment of high-frequency electromagnetic interference, while a certain amount of reactive power compensation. The measured power distribution system shows that after the active power filter based on instantaneous reactive power theory is put into operation, the harmonic content in the power distribution system is greatly reduced and the voltage waveform is effectively corrected.