MULTILEVEL POWER CONVERSION DEVICE

• Main Authors: KOBORI KENJI, HAMADA SHIZUNORI
• 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 suppress level skipping of output voltage at the time of stopping and starting a device in a multilevel power conversion device.SOLUTION: When a device is stopped, switching pattern of first to tenth switching devices S1-S10b of a phase module 2 is selected according to a voltage output command at the time of receiving a stop command, and all of the first to tenth switching devices S1-S10b are turned off by transiting the switching pattern. Then, all of first to eighth semiconductor switches Sa-Sh of a DC module 1 are turned off.SELECTED DRAWING: Figure 1 【課題】マルチレベル電力変換装置において、装置の停止時、起動時の出力電圧のレベルスキップを抑制する。【解決手段】装置停止時に、停止指令受信時の電圧出力指令に応じて相モジュール２の第１〜第１０スイッチングデバイスＳ１〜Ｓ１０ｂのスイッチングパターンを選択し、スイッチングパターンを遷移させて、全ての第１〜第１０スイッチングデバイスＳ１〜Ｓ１０ｂをオフする。その後、直流モジュール１の全ての第１〜第８半導体スイッチＳａ〜Ｓｈをオフする。【選択図】図１