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

Abstract

The invention provides an active heave compensation regenerative braking optimization control method for a marine winch driven by a switched reluctance motor. The active heave compensation regenerative braking optimization control method comprises the following steps: according to a braking given rotating speed corresponding to a starting moment of each inductance change period in a braking process of a certain phase of the switched reluctance motor when the marine winch runs, the braking energy feedback efficiency and the braking torque pulsation coefficient are taken as optimization targets, and the optimal turn-on angle, the optimal turn-off angle and the optimal commutation overlapping angle of each inductance change period are obtained by adopting a double-target non-dominated sorting genetic algorithm based on a progressive constraint dominating rule; and a braking given rotating speed required to be tracked during actual braking operation of the switched reluctance motor is calculated so as to obtain the optimal braking energy feedback efficiency, and the optimal opening angle, the turn-off angle and the commutation overlapping angle corresponding to each phase of winding at the current braking given rotating speed under the minimum braking torque pulsation coefficient. According to the method, the optimal regenerative braking efficiency and the minimum torque pulsation coefficient can be obtained in the whole process on the premise that the switched reluctance motor accurately tracks the time-varying braking given rotating speed of the switched reluctance motor.

Description

technical field [0001] The invention relates to the field of regenerative braking control of switched reluctance motors, in particular to an optimal control method for active heave compensation regenerative braking of marine winches driven by switched reluctance motors. Background technique [0002] The switched reluctance motor has a series of advantages such as simple and solid structure, small starting current, large starting torque, high efficiency, strong fault tolerance, wide speed range, etc., so it is very suitable for active heave compensation of marine winches that require frequent braking, acceleration Reduced operating conditions. However, in the active heave compensation control of the marine winch, the switched reluctance motor will generate a large amount of energy loss due to frequent braking operation, which not only causes a great waste of energy, but also causes a large amount of energy consumption due to frequent braking. It will greatly increase the tem...

AI Technical Summary

Problems solved by technology

However, in the active heave compensation control of the marine winch, in order to achieve synchronous operation with the heave motion of the mother ship, its transmission motor needs to keep accurate tracking of its corresponding time-varying given speed during the braking process. If the efficient regenerative braking control of the whole braking process is realized while maintaining the variable speed tracking state, it is difficult for the existing control methods to meet the requirements

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