Patent ID: 9401656
Filing Date: 2016-07-26
CPC Classification: H02M,H02P

Claim Text:
1. A method of controlling a power conversion apparatus which comprises: a first power supply line and a second power supply line; a rectifier for full-wave rectifying an AC voltage to be inputted to output a rectified voltage to between said first power supply line and said second power supply line; a capacitor provided between said first power supply line and said second power supply line, for allowing pulsation of said rectified voltage caused by full-wave rectification of said rectifier; a reactor constituting a LC filter, together with said capacitor; and a power converter for converting a DC voltage supported by said capacitor into an AC voltage on the basis of a switching signal to be inputted, said method comprising the steps of: detecting a voltage of said reactor; making a correction on the basis of said voltage of said reactor so that a first voltage control rate command which is a ratio of an amplitude of said AC voltage to an average value of said DC voltage increases as a harmonic component of said DC voltage becomes higher and said first voltage control rate command decreases as an amplitude of an alternating current outputted from said power converter becomes larger, to generate a second voltage control rate command; and giving said switching signal which is generated on the basis of said second voltage control rate command to said power converter.