Uninterruptible power supply with rectifier controller for reducing harmonics of input current and control method therefor

摘要

The present invention provides a voltage controller for performing voltage control with respect to an error between a reference voltage value and an input DC voltage; a multi-notch filter to which the current output from the voltage controller is input to remove harmonic components of the current; a two-phase/three-phase converter that receives the current output from the multi-notch filter and converts it from a synchronous rotational coordinate system to an abc-axis coordinate system; a current controller for performing current control with respect to an error between the current output from the two-phase/three-phase converter and the actual input current; It includes an uninterruptible power supply with a rectifier controller comprising a; connected in parallel with the current controller and generating a periodic signal to compensate for the voltage of the harmonic component when a harmonic component current is generated do.