MULTILEVEL POWER CONVERSION DEVICE
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 a...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
24.10.2019
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Subjects | |
Online Access | Get full text |
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Summary: | 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 |
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Bibliography: | Application Number: JP20180075786 |