Electric revolving drive system of full-revolving rudder propeller and control method

Abstract

The invention discloses an electric revolving drive system of a full-revolving rudder propeller and a control method, and belongs to the field of full-revolving rudder propellers. The electric revolving drive system comprises three revolving drive motors and a frequency converter, wherein the three revolving drive motors include the first revolving drive motor, the second revolving drive motor andthe third revolving drive motor and are electrically connected with the frequency converter separately, when the three revolving drive motors output the same torque, the slip frequencies of the threerevolving drive motors are S1T, S2T and S3T respectively, and the S1T, the S2T and the S3T meet a certain formula. In the electric revolving drive system, by setting the slip frequencies of the threerevolving drive motors, it is ensured that the situation of serious load imbalance of the motors in the revolving process cannot occur, when one of the revolving drive motors is damaged, the other two revolving drive motors can continue to work, and the situation that all revolving capacity of the full-revolving rudder propeller is lost cannot be caused. The three revolving drive motors are controlled by the same frequency converter, so that the production cost is reduced.

Description

technical field [0001] The invention relates to the field of full-turn rudder propellers, in particular to an electric rotary drive system and control method for full-turn rudder propellers. Background technique [0002] The full-turn rudder propeller is a kind of propeller that combines the function of the rudder with the function of the propeller. The full-turn rudder propeller can not only control the thrust by adjusting the propeller speed, but also can rotate within 360° to control the thrust direction. In the full-turn rudder propeller, the rotary gear is generally driven to rotate through a hydraulic rotary system or an electric rotary system, so as to realize the rotation of the full-turn rudder propeller. [0003] The slewing system of the full-turn rudder generally includes three identical drive assemblies, and each drive assembly includes a motor (motor), a reducer, and a gear. These three components are mutually redundant, and the damage of one component will n...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the failure of the main engine leads to the loss of all the turning ability and the use of three frequency converters increases the production cost, the embodiment of the present invention provides an electric turning driving system and control method for the full turning rudder propeller

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