POWER CONVERSION DEVICE

• Main Authors: SUGAI TAKUYA, MUNESHIMA MASAKAZU
• Format: Patent
• Language: English; Japanese
• Published: 24.10.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To output a voltage according to a command value even when the modulation factor is 1 or more in a power conversion device.SOLUTION: In a multi-phase power conversion device that performs AC-DC conversion or DC-AC conversion, a three-phase modulation signal vofs0 is calculated by multiplying a value obtained by multiplying voltage command values V*u, V*v, V*w of each phase by a gain G. PWM modulation is performed on the basis of final command values V2u, V2v, V2w obtained by adding the three-phase modulation signal vofs0 to the voltage command values V*u, V*v, V*w of each phase.SELECTED DRAWING: Figure 1 【課題】電力変換装置において、変調率が１以上の場合も指令値通りの電圧を出力する。【解決手段】交流−直流変換または直流−交流変換を行う多相の電力変換装置において、各相の電圧指令値Ｖ＊ｕ，Ｖ＊ｖ，Ｖ＊ｗを乗算した値にゲインＧを乗算して三相変調信号ｖｏｆｓ０を算出する。各相の前記電圧指令値Ｖ＊ｕ，Ｖ＊ｖ，Ｖ＊ｗに前記三相変調信号ｖｏｆｓ０が加算された最終指令値Ｖ２*ｕ，Ｖ２*ｖ，Ｖ２*ｗに基づいてＰＷＭ変調を行う。【選択図】図１