Hybrid power control system for crane and control method of hybrid power control system

Abstract

The invention discloses a hybrid power control system for a crane and a control method of the hybrid power control system. The hybrid power control system comprises a battery management system, a generator unit controller, a rectifying device, an inverter power supply device, a power battery set data collecting module, an electronic fuel consumption metering system and an electric quantity collecting module, wherein the generator unit controller, the rectifying device, the inverter power supply device, the power battery set data collecting module, the electronic fuel consumption metering system and the electric quantity collecting module are connected with the battery management system. According to the hybrid power control system, working states of all the devices are controlled integratedly through the battery management system, and the security and stability of the system are improved; the calculation accuracy of battery residual capacity is improved through electric quantity integrating and battery voltage calibration; intelligent fuzzy logic control is adopted, and according to the operation status of the crane, the charging state of the hybrid power control system is adjusted in real time, and the fuel saving efficiency of the system is improved; the electronic fuel consumption metering system is arranged, the energy saving situation of the system is analyzed in real time; a wireless remote monitor is arranged, operation condition and fault of the system are monitored in real time, and the reliability of the system is improved; and system sensor fault self-testing is achieved, and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the technical field of crane power systems, in particular to a hybrid power control system for a crane and a control method thereof. Background technique [0002] The hybrid power system of tire-type cranes used in ports generally uses a combination of diesel generator sets and power battery packs to provide power output for the cranes, and achieves energy saving and emission reduction through the use of hybrid power. In order to detect the physical parameters of the battery and improve the utilization rate of the battery, a battery management system is provided in the hybrid power system. However, the existing battery management system for cranes is originally applied to electric vehicles, that is, the battery management system does not match the operating conditions of the crane, and cannot manage the power battery pack realistically, thus affecting the normal operation of the crane and affecting battery life. [0003] At t...

AI Technical Summary

Problems solved by technology

However, the existing battery management system for cranes is originally applied to electric vehicles, that is, the battery management system does not match the operating conditions of the crane, and cannot manage the power battery pack realistically, thus affecting the normal operation of the crane and affecting Lifespan of the battery pack

[0003] At the same time, the hybrid power system includes a generator set, a power battery pack, a rectifier device, an inverter power supply device, and a battery management system. However, there is little or no communication between each device, so it is impossible to respond in time according to each other's operating status

In actual control, the battery management system only collects battery data and makes calculations. If it is found that the charge and discharge state exceeds the normal range of the battery, an alarm signal is sent. This signal must be received and responded by other devices. However, once each other When the coordination steps are inconsistent, they will go their own way, and the battery management system will lose its meaning. The battery will be overcharged or overdischarged, and even cause the crane operation to be interrupted and malfunction.

[0004] In summary, the existing battery management system cannot adjust the charging time of the generator set and the charging capacity of the battery pack in the hybrid system according to the operating state and working conditions of the crane, resulting in the inability to achieve higher energy-saving effects

Images