DC bus powered crane power system

A DC bus and power system technology, applied to the improvement of the power system and the field of gantry cranes, can solve the problems of low working efficiency of the engine unit, and achieve the effects of saving equipment maintenance, saving energy, and working stably
CN1945963AInactive Publication Date: 2007-04-11罗中柱
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
罗中柱
Publication Date
2007-04-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses a hoist power system supplied by DC bus including a generator set, a supply and distribution system, a frequency conversion system and a speed regulation motor, in which, the supply and distribution system includes a large power commutation device, a DC bus and an energy management unit, the DC bus is parallel with a DC energy-storage device capable of supplying the conversion system at the same time, which includes several inverters connected on the DC bus, the speed regulation motor is a lifted motor, a jumbo motor or a trolley motor, in which, the lifted motor is converted to generator mode to store the re-generated energy source to an energy storage device when a lifted subject falls, the energy management unit controls the operation speed and generation volume of the generator set to realize real time match of output power and load power.
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Description

technical field

[0001] The invention relates to the technical field of cranes, in particular to the improvement of the power system of the lifting equipment. It is suitable for heavy-duty cranes with generator sets in ports, docks and other areas. It is mainly used for large and medium-sized port cranes, especially for gantry cranes. Background technique

[0002] At present, the general power system configuration of mobile heavy cranes with generator sets in ports is to use high-power internal combustion generator sets in fixed-speed (power frequency) power generation mode to generate three-phase alternating current, which is transmitted to various electrical loads through the power supply and distribution system. , supplied to different inverter-driven lifting motors, cart motors and trolley motors, and other auxiliary electrical equipment. Its principle is shown in Figure 1, and the frequency converter converts AC / DC / AC twice.

[0003] The power system of a conventional ...

Claims

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