Active heave compensation control method for marine winch driven by switched reluctance motor

Abstract

The invention discloses an active heave compensation control method for a switched reluctance motor driven marine winch, which calculates the speed deviation of the switched reluctance motor according to the heave motion speed of the marine winch and the actual speed of the switched reluctance motor; The control algorithm GSSEC obtains the given torque, combined with the actual torque, to obtain the torque deviation; according to the given flux linkage of the switched reluctance motor, and detects its actual flux linkage at the same time, the flux linkage deviation is obtained; according to the torque deviation and the flux linkage deviation , to send a control signal to the power conversion circuit to control the on-off of the power switch in the power conversion circuit. The control method of the present invention, when adopting the GSSEC control method to realize the tracking control of the actual rotating speed of the switched reluctance motor to its given rotating speed, its tracking control accuracy is closely related to the selection of GSSEC control parameters, that is, the better the selection of the control parameters , the higher the tracking control accuracy is, the fruit fly optimization algorithm is used to optimize its control parameters to obtain the optimal control effect.

Description

technical field [0001] The invention relates to the field of active heave compensation control of marine winches, in particular to an active heave compensation control system for marine winches driven by switched reluctance motors. Background technique [0002] The marine winch is an important retractable equipment for marine scientific research and marine resource exploration and development. In order to overcome the impact of strong wind, wave and current nonlinear interference on normal operations at sea, the marine winch is generally required to have an active heave compensation function. As the current development direction of active heave compensation power drive for marine winches, although the AC variable frequency electric drive has the advantages of simple structure, reliable performance, and convenient adjustment, the AC variable frequency motor for driving still has problems such as large starting current, low overload capacity, and low power. Insufficient facto...

AI Technical Summary

Problems solved by technology

However, in the active heave compensation control of the marine winch, in order to realize the synchronous operation of the marine winch with the heave movement of the mother ship, its drive motor will be in the operating condition of frequent forward and reverse rotation and its speed changes in real time. If the actual speed of the motor cannot Accurate tracking of its time-varying given speed cannot meet the synchronous control requirements of active heave compensation of marine winches. Therefore, it is of great significance to carry out research on high-performance speed control methods of switched reluctance motors.

[0004] At present, a series of studies have been carried out on the high-performance speed control of switched reluctance motors at home and abroad, such as self-tuning Takagi-Sugeno-Kang fuzzy control (ATSKFC), second-order sliding mode control (SOSMC) based on super torque algorithm, etc. A variety of control methods have achieved certain control effects, but for time-varying given speed operating conditions, the speed tracking control accuracy is still difficult to meet the control requirements

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