电力推进式船舶电机功率控制方法

Power control method of electric propulsion motor

为了提高推进式船舶电机功率控制的稳定性,设计新型船舶电机功率控制方法。将船舶交流电机模型进行坐标变换,生成αβ两相坐标,将功率参数代入到坐标系内,计算电机瞬时功率P*和Q*,利用功率参数和坐标系变换矢量,求取船舶电机功率电压给定值并传输到船舶控制逆变器内,进行功率通断,生成控制信号,实现船舶电机功率的稳定控制。实验研究表明,与传统方式相比,使用设计的新型电机控制方法后,船舶电机瞬时功率稳定性提高17%,固定时间内电机功率稳定性提高20%,具有鲜明优势性。

In order to improve the stability of power control of propulsion motor, a new power control method of Marine motor is designed. Will ship coordinate transformation, ac motor model to generate alpha beta two-phase coordinate, the power parameters into a coordinate system, the motor instantaneous power and calculation, by calculating the power parameter vector and coordinate transformation, further to calculate ship′s electric power voltage set value, and transferred to the ship control inverter, power on and off, to generate control signal, realize stable control of ship′s electric power. The experimental results show that compared with the traditional method, the transient power stability of Marine motor is improved by 17% and the power stability of motor within fixed time is increased by 20% after using the new motor control method.