UPS APPARATUS AND METHOD FOR CONTROLLING DROP CONSIDERING COMPENSATION OF IMPEDANCE INTERFERENCE AND LINE UNBALANCE WHEN MODULE TYPE OF UPS PARALLEL OPERATION USING WILELESS

摘要

The present invention discloses an apparatus and method for controlling an underwater load in consideration of impedance interference components and line unbalance compensation in a parallel operation of a modular UPS using a non-communication line method. According to a specific example of the present invention, the active power-output voltage underflow control ) And the reactive power - the frequency of the output voltage ( ) And the inductance interference compensation value and the line unbalance compensation value derived from equations (19) and (20) at the time of underwater control, so that the frequency and peak value of the inverter output voltage , ), And calculates the angular frequency and peak value of the inverter output voltage ( , ) And a predetermined resistive load impedance ( ), It is found that the fluctuation and inconsistency of the line impedance, the physical difference of the UPS inverters, and the load can be stabilized when the load is increased for the wireless parallel operation method of the UPS. So that the output voltage can be controlled while sharing.