Electric propulsion system for inland watercraft and navigation control method for inland watercraft including the propulsion system

Abstract

The invention discloses an electric propulsion system for an inland riverboat with high navigation maneuverability, which includes an electric system and a full-turn propulsion system that can be lifted and retracted; the full-turn propulsion system includes a tilt mechanism arranged on the hull, and The mechanism includes a rotating disk arranged on the hull to rotate around a horizontal axis and a swinging drive device for driving the rotating disk. The output end of the swinging driving device extends or retracts to drive the rotating disk to rotate. The rotating disk is connected with a turning mechanism. It includes a revolving seat, which is connected to the rotating disc through the rotating shaft provided on it. The inner cavity of the revolving seat is equipped with a hollow revolving body that can rotate 360° on a plane perpendicular to the surface of the revolving disc in the revolving seat cavity. The revolving body There is a lifting mechanism that moves along the direction of the central axis of the revolving body, and the lifting mechanism is equipped with a hollow hub full-turn propulsion system. The invention also discloses a navigation control method of an inland riverboat comprising the electric propulsion system of the inland riverboat.

Description

technical field [0001] The invention belongs to the technical field of ship propulsion, and in particular relates to a ship electric propulsion system, in particular to an inland river ship electric propulsion system and an inland river ship navigation control method including the propulsion system. Background technique [0002] The ship's AC network electric propulsion system, that is, the diesel engine drives the synchronous generator to generate electricity, and the constant-frequency and constant-voltage AC generated by the AC switchboard is used for AC networking. The AC voltage after the AC network is passed through the AC-DC-AC converter. The ship's propulsion motor works. [0003] The ship electric propulsion system is a relatively advanced propulsion method. Its energy-saving, environmental protection and safety performance are very suitable for inland river ships. However, the driving environment of inland waterways is complex, and the water depth and current condi...

AI Technical Summary

Problems solved by technology

[0003] The ship electric propulsion system is a relatively advanced propulsion method. Its energy-saving, environmental protection and safety performance are very suitable for inland river ships. However, the driving environment of inland waterways is complex, and the water depth and current conditions change frequently, resulting in large fluctuations in the operating load of ships. The output power of the diesel engine cannot follow the changes quickly, resulting in the defects of poor operating conditions and high fuel consumption of the diesel engine

In addition, the inland waterway is narrow, there are many sharp bends and dangerous beaches, and there are many ships that need to avoid and cross each other. The requirements for the maneuverability of the ship are relatively high. The conventional electric propulsion system and propulsion structure cannot meet the high maneuverability requirements of the ship operation.

[0004] The patent "a pod-type full-turn ship electric propulsion system" (ZL201811655171.2) uses at least one set of power generation units. The system is connected to a pod-type azimuth propulsion system with a synchronous motor inside. A telescoping mechanism is provided on the propeller hub of the azimuth propulsion system to adjust the diameter of the propeller, and then adjust the thrust of the propeller; however, the electric propulsion system adopted in this patent cannot be based on The operating load of the ship changes the output power of the power system, which easily causes energy waste

[0005] The patent "a sailing control method for a ship's propulsion system" (ZL200810034634.3) uses two sets of propulsion motors installed symmetrically on the left and right and a full-turn propeller to form a ship propulsion power plant. Through propulsion control and rotation control, the speed and angle control of the propeller is realized; However, this method does not consider the control of the output power of the full-turn propulsion system when the ship's operating load fluctuates. At the same time, the ship's navigation control method only considers the ship's target speed and course, and does not consider the requirements of the ship's target position for navigation control. Under the conditions of fixed-point docking and other conditions, it cannot meet the navigation requirements of high maneuverability of inland river ships. In addition, when ships or obstacles suddenly appear in the navigation track during the automatic navigation of the ship, the ship cannot avoid it in time.

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