PROBLEM TO BE SOLVED: To provide a regenerative power supply device for a crane device capable of sufficiently utilizing regenerative power during winding-down.SOLUTION: A regenerative power supply device for a crane device comprises a DC voltage converter 27 branching from a DC bus and connected, a capacitor connected to the DC voltage converter 27, and control means 37 for controlling a regenerative power supply circuit. The control means 37 comprises a DC bus determination unit 38, a capacitor voltage determination unit 39, and a power supply instruction unit 43. The DC bus determination unit 38 determines whether the voltage of the DC bus becomes not less than a prescribed threshold voltage. The capacitor voltage determination unit 39 determines whether the voltage of a capacitor becomes not less than a prescribed threshold voltage. When the voltage of the DC bus becomes not less than the prescribed threshold voltage, the power supply instruction unit 43 instructs a converter step-down unit 27B to step down the output voltage to a voltage lower than the voltage of the DC bus. When the voltage of the capacitor becomes not less than the prescribed value, the power supply instruction unit 43 instructs a converter set-up unit 27A to step up the output voltage to a voltage higher than the voltage of the DC bus.SELECTED DRAWING: Figure 6
【課題】巻下時の回生電力を十分に活用することのできるクレーン装置用回生電力供給装置を提供すること。【解決手段】クレーン装置用回生電力供給装置は、直流母線から分岐して接続される直流電圧変換器27と、直流電圧変換器27に接続されるキャパシタと、回生電力供給回路を制御する制御手段37とを備え、制御手段37は、直流母線の電圧が所定の閾電圧以上となったか否かを判定する直流母線判定部38と、キャパシタの電圧が所定の閾電圧以上となったか否かを判定するキャパシタ電圧判定部39と、直流母線の電圧が所定の閾電圧以上となったら、直流電圧変換器27の変換器降圧部27Bに指示を与え、キャパシタの電圧が所定の閾電圧以上となったら、変換器昇圧部27Aに指示を与える電力供給指示部43とを備える。【選択図】図6
REGENERATIVE POWER SUPPLY DEVICE FOR CRANE DEVICE
クレーン装置用回生電力供給装置
2016-06-23
Patent
Elektronische Ressource
Japanisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B66C Krane , CRANES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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