Double-shaft four-machine type ship hybrid power system and propulsion control method thereof

Abstract

The invention relates to a double-shaft four-machine type ship hybrid power system and a propulsion control method thereof. The hybrid power system comprises two sets of independent power devices. Theoutput end of a main push diesel engine is connected with the input end of a gearbox through a clutch; the input / output end of a propulsion motor is connected with the input / output end of the gearbox; the output end of the gearbox is connected with the input end of a full-revolving steering oar; a first group of power transmission lines of the propulsion motor are connected with a first group ofterminals of a distribution board through a propulsion motor end rectifier; a second group of terminals of the distribution board are connected with an energy storage unit; and a third group of terminals of the distribution board are connected with a second group of power transmission lines of the propulsion motor through a propulsion motor end inverter and a frequency converter in sequence. The power system is wide in power coverage range, on the one hand, power redundancy is increased, the reliability of the power system is improved, and on the other hand, multiple working modes are provided, and the requirements of various ship environments and working conditions are met.

Description

Technical field[0001]The present invention relates to the field of ship hybrid power technology, and more particularly to a biaxial four-machine ship hybrid system and its propulsion control method.Background technique[0002]With more stricter ship emission regulations, ship energy saving and emission reduction technology has become the focus of your concerns and research. Ship hybrid technology provides feasibility programs for ships from traditional internal combustion engine propulsive way to pure electric propulsion, in which die-electric hybrid technology is the focus of current research, and China's ship die-electricity hybrid system starts late. Experience three stages: In the first stage, in the early 1990s to the beginning of the 21st century, a few ships built by domestic shipyards adopted a die-electric hybrid system, but its supporting die-electric hybrid system was designed by foreign suppliers. And supplies, such as the 16400T chemical boat ship in Jiangnan shipyard exp...

AI Technical Summary

Problems solved by technology

[0003] The main power source of the motor in the existing diesel-electric ship hybrid power system is still from the generator, which occupies a large amount of ship space. Some systems add batteries as energy storage units, but their discharge efficiency is low, their service life is short, and the charging method is single, resulting in The effect is poor in the actual application process. In addition, the current ship propulsion control system is mostly controlled by board cards, etc., and the operation effect is unstable.

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