POWER CONVERSION DEVICE

To provide a power conversion device which can suppress delay of control even when a communication system of a star type centering on a relay is adopted.SOLUTION: There is provided a power conversion device which comprises: a main circuit part having a plurality of converters; a relay connected with the plurality of converters; and a control device which controls an operation of the main circuit part by communicating with the plurality of converters via the relay and inputting control signals in the plurality of converters, wherein the control device acquires a plurality of pieces of information required for control from the plurality of converters, generates the control signals of the plurality of converters on the basis of the plurality of pieces of acquired information, updates the plurality of pieces of information, and makes a frequency of update of information with a high degree of importance higher than a frequency of update of information with a low degree of importance.SELECTED DRAWING: Figure 1 【課題】中継器を中心とするスター型の通信方式を採用した際にも、制御の遅れを抑制できる電力変換装置を提供する。【解決手段】複数の変換器を有する主回路部と、複数の変換器と接続された中継器と、中継器を介して複数の変換器と通信を行い、複数の変換器に制御信号を入力することにより、主回路部の動作を制御する制御装置と、を備え、制御装置は、複数の変換器から制御に必要な複数の情報を取得し、取得した複数の情報に基づいて複数の変換器の制御信号の生成を行うとともに、複数の情報の更新を行い、重要度の高い情報の更新の頻度を、重要度の低い情報の更新の頻度よりも高くする電力変換装置が提供される。【選択図】図１