Patent ID: 9178409
Filing Date: 2015-11-03
Classification: H02M

Abstract:
1. A power conversion control device for controlling a power converting apparatus, said power converting apparatus including: said voltage-source inverter having: each of said three current paths has: said power conversion control device comprising: wherein said inverter controller brings all of said upper arm side switches into an off state in an isolation period where a first time point is a commencement and a time point obtained by adding dead time to a second time point is a termination, said first time point is a time point when said carrier takes a value of a first said signal wave, and said second time point is a time point when said carrier takes a value of a second said signal wave for the first time after said first time point, said first said signal wave and said second said signal wave are said signal waves for a maximum phase of said three-phase voltages, said upper arm side switches for applying a current corresponding to a voltage of said maximum phase shifts from an on state to an off state at said first time point, and shifts from the off state to the on state after said dead time passes since said second time point, said predetermined time is set to a value that is larger than a value obtained by subtracting said commutation reference time point from said first time point and is shorter than a sum of a value obtained by subtracting said commutation reference time point from said second time point and said dead time.