CONTROLLER OF REGENERATIVE CONVERTER

摘要

PURPOSE:To control the change rate of a regenerative current substantially constantly by using the difference between a regeneration starting voltage produced by adding the prescribed value to the peak value of an interphase voltage and a DC voltage as a regenerative current command. CONSTITUTION:A voltage setter 26 detects the peak value of an interphase voltage of received AC voltage, and outputs a regeneration starting voltage E0 added with the prescribed value to the peak value. When a DC voltage E becomes higher than the voltage E0, a voltage error amplifier 14 generates a regenerative current command value I0. A deviation between the value I0 and a regenerative current detected value I is compared through a current error amplifier 18 with a triangular wave from a triangular wave generator 20. The output of the compared result is input together with the output of a phase detector 25 to AND gates 37-39 to control ON or OFF the switching transistors 61-66 of a regenerative converter.