POWER CONVERTER AND POWER CONVERTER CONTROL METHOD

• Main Authors: IMAI TAKASHI, MATSUI TAKEO, KACHI SUMIO, ABE ASUKA, GOTO TAKAO
• Format: Patent
• Language: English; Japanese
• Published: 22.02.2024
• 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 prevent damage to a power converter using a switching element.SOLUTION: A power converter includes a power conversion unit that converts and outputs power by switching operation of a switching element, a sensor that measures an electrical characteristic value of the output of the power conversion unit, and a control unit that controls the output of the power converter by causing the switching element to perform switching operation using a pulse signal, and stops driving the switching element when a time change of the electrical characteristic value when a duty ratio or a frequency of a pulse signal is equal to or higher than a predetermined value satisfies a predetermined condition.SELECTED DRAWING: Figure 2 【課題】スイッチング素子を用いた電力変換器の損傷を防ぐ。【解決手段】電力変換器は、スイッチング素子のスイッチング動作により電力を変換して出力する電力変換部と、前記電力変換部の出力の電気特性値を測定するセンサと、前記スイッチング素子をパルス信号でスイッチング動作させて前記電力変換部の出力を制御し、前記パルス信号のデューティ比又は周波数が所定値以上のときの前記電気特性値の時間変化が所定の条件を満たしている場合、前記スイッチング素子の駆動を停止する制御部と、を備える。【選択図】図２