The invention discloses a nine-switch driving and charging integrated circuit for engineering machinery, in a charging mode, a nine-switch converter is reconstructed to form a three-phase rectifier, and meanwhile, a first stator winding and a second stator winding of a second three-phase motor can be combined with a DC-DC bridge arm to form a Buck-Boost circuit; in the driving mode, the nine-switch converter can realize single-motor driving and dual-motor driving. Although a dual-motor driving mode is low in direct current utilization rate and small in speed regulation range, the requirement for dual-motor driving is not high due to the fact that a driving motor and a lifting motor of the engineering machinery often do not work at the same time. The circuit can realize integrated driving and charging on the engineering machinery, greatly improves the utilization rate of the motor when the engineering machinery works, and has the advantages of high motor utilization rate, simple principle, high reliability, high charging power and high power density.
本发明公开了一种用于工程机械的九开关驱充一体化电路,在充电模式中,九开关变换器重构成三相整流器,同时第二三相电机的第一定子绕组和第二定子绕组可与DC‑DC桥臂组合成Buck‑Boost电路;在驱动模式,九开关变换器能够实现单电机驱动和双电机驱动。虽然双电机驱动模式直流利用率低,调速范围小,但由于工程机械的驱动电机和抬升电机往往不同时工作,因此对双电机驱动要求不高。本发明电路可实现工程机械上集成驱动和充电,大大提高了工程机械工作时电机的利用率,具有电机利用率高、原理简单、可靠性高、充电功率大、功率密度高的优点。
Nine-switch driving and charging integrated circuit for engineering machinery
一种用于工程机械的九开关驱充一体化电路
2023-09-01
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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