Inverter control method suitable for multi-energy ship microgrid

CN120879798APending Publication Date: 2025-10-31RES INST 708 OF CHINA STATE SHIPBUILDING CORP
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Patent Information

Application Number
CN202511061163.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-30
Publication Date
2025-10-31

AI Technical Summary

Technical Problem

In existing technologies, the inverter control strategies of multi-energy ship microgrids cannot effectively optimize power quality and do not take power quality management and the economic operation of ship power plants as optimization objectives, resulting in the disconnect between ship microgrids and traditional power systems and a lack of overall coordinated control.

Method used

By acquiring the operating status information of the diesel generator set power station side and the microgrid, and combining the current detection method and multi-objective optimization control strategy, a comprehensive power quality top-level optimization index model is established to optimize the power quality and economy of the inverter, and to achieve the control strategy with the best power quality index and the highest economy.

Benefits of technology

It improves the compatibility of inverters with shipboard power grids, enhances the role of shipboard microgrids in the overall ship power supply and distribution system, improves power quality and economy, and promotes the application of multi-energy shipboard microgrids on ships.

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Abstract

The invention relates to an inverter control method suitable for a multi-energy ship micro-grid, and relates to the field of ship new energy micro-grid control technology, and the method comprises the steps: obtaining the operation state information of a power system; obtaining operation state information in the micro-grid; carrying out integration processing and real-time monitoring; obtaining a harmonic component in the load current; performing electric energy quality calculation on the direct current bus and the power supply end of the micro-grid; performing current electric energy quality calculation on the grid-connected input point and the ship power grid; establishing a comprehensive power quality top layer optimization index model; various working conditions and two long-time operation working conditions of the ship are considered, and the economical efficiency of a power station is combined with an electric energy quality optimization algorithm; solving by using a multi-objective optimization control strategy; and a two-layer optimization architecture is adopted. The method is beneficial to meeting the requirement of the ship power system for electric energy quality optimization.
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