A dynamic adaptive control method for propulsion power

Abstract

The invention discloses a propulsive power dynamic self-adaptive control method. The method comprises the steps that the main distribution board busbar switch state of a power management system, and the network state and the load factor of a diesel generator set are acquired and sent to a controller; and the controller synthesizes the information and the current output power of an inverter to carry out dynamic power limiting and fast power limiting on the inverter. In the dynamic power limiting process, the controller monitors the load factor of the diesel generator set in real time, and constantly adjusts the limit of the output power of the inverter to ensure safe operation of the diesel generator set. In a fast power limiting process, the controller monitors the load factor of the diesel generator set and the corresponding main switch state in real time. When the corresponding main switch is turned off due to the failed generator set, the controller can quickly limit the output power of the inverter to ensure safe operation of remaining generator sets. The propulsive power dynamic self-adaptive control method provided by the invention has the advantages of simple system structure and high automation degree, and can ensure safe and reliable sailing of an electric propulsion ship in all cases.

Description

technical field [0001] The invention belongs to the technical field of ship electric propulsion systems, and in particular relates to a dynamic self-adaptive control method for propulsion power, which is used to realize safe and reliable navigation of electric propulsion ships. Background technique [0002] In the past, electric propulsion ships did not have the adaptive control function of propulsion power. When the load rate of the unit reached 95%, the power management system would issue an alarm of “high load rate of the unit” to prompt the operator to reduce the propulsion power or put in the standby unit. On a ship equipped with an automatic power station, the automation advantages of the automatic power station cannot be fully utilized, and there are potential safety hazards. [0003] For example, in the commonly used "semi-automatic" mode of a ship power station, when the ship changes from economical voyage to full-speed voyage, it is necessary to start the standby u...

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Problems solved by technology

The above process is not only cumbersome to operate, but improper operation may lead to serious accidents

[0004] On the other hand, when the ship is sailing at full speed, the units are in a high load state. At this time, if a unit suddenly fails and shuts down, the load of this unit will be quickly distributed to other on-grid units, which may cause other on-grid units to be overloaded. Shutdown, eventually the entire ship loses power

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