The active filter detects the load current in real time through the external current transformer CT, and extracts the harmonic component of the load current through the internal DSP calculation, and then sends it to the internal IGBT through the PWM signal, and controls the inverter to generate a current equal to the load harmonic magnitude and the opposite direction and is injected into the power grid to compensate for the harmonic current to realize the filtering function.
The active filter detects the load current in real time through the external current transformer CT, and extracts the harmonic component of the load current through the internal DSP calculation, and then sends it to the internal IGBT through the PWM signal, and controls the inverter to generate a current equal to the load harmonic magnitude and the opposite direction and is injected into the power grid to compensate for the harmonic current to realize the filtering function.
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