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To suppress an excessive current from running through a converter when cancelling shutdown of a converter.SOLUTION: When shutdown of a second converter is cancelled while electric power is being exchanged along with voltage conversion between a first power line and a second power line by a first con...

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Bibliographische Detailangaben
1. Verfasser:	TSUJII SHINTARO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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 ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	To suppress an excessive current from running through a converter when cancelling shutdown of a converter.SOLUTION: When shutdown of a second converter is cancelled while electric power is being exchanged along with voltage conversion between a first power line and a second power line by a first converter with the second converter under a shutdown state, in order to prevent an electric current in the opposite direction to an electric current running through a first rector does not run through a second reactor, with either one of a third and a fourth switching elements of the second converter kept off, single element switching control of switching the other switching element is executed.SELECTED DRAWING: Figure 3 【課題】コンバータのシャットダウンを解除する際にコンバータに過大な電流が流れるのを抑制する。【解決手段】第２コンバータをシャットダウンした状態で第１コンバータにより第１電力ラインと第２電力ラインとの間で電圧変換を伴って電力の授受を行なっている最中に第２コンバータのシャットダウンを解除するときには、第１リアクトルに流れる電流とは逆方向の電流が第２リアクトルに流れないように第２コンバータの第３，第４スイッチング素子のうち一方のスイッチング素子をオフした状態で他方のスイッチング素子をスイッチングする片素子スイッチング制御を実行する。【選択図】図３