Title:
CONTROL DEVICE FOR DIRECT TYPE POWER CONVERTER
Document Type and Number:
Japanese Patent JP2016082680
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress variations in a voltage across opposite terminals, even if an electrostatic capacity of a buffer capacitor is changed, in a power buffer circuit that a direct type power converter comprises.SOLUTION: A control device 10 comprises a charge control part 103. The charge control part 103 includes an amplitude determination part 103a, a charging command generation part 103b and a charging operation control part 103c. The amplitude determination part 103a performs at least proportional integration control on a deviation ΔVc between an average voltage command value Vc* that is a command value for an average value of a voltage Vc across opposite terminals of the buffer capacitor, and the voltage Vc across opposite terminals, and determines an amplitude Im of an input current to be inputted to the converter. The charging command generation part 103b multiplies a function F(θ) that is determined in accordance with a discharge duty dc, a rectification duty drec and a distribution rate of power by the amplitude Im and determines a charging command iL*. The charging operation control part 103c controls an operation for charging the buffer capacitor on the basis of the charging command iL*.SELECTED DRAWING: Figure 2
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Inventors:
SAKAKIBARA KENICHI
Application Number:
JP2014210843A
Publication Date:
May 16, 2016
Filing Date:
October 15, 2014
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
H02M7/48; H02M3/155
Attorney, Agent or Firm:
Yoshitake Hidetoshi
Takahiro Arita
Tomohiro Fukuichi
Takahiro Arita
Tomohiro Fukuichi