船舶电力推进系统谐波特性仿真与研究

Simulation and Research on Harmonic Characteristics of Vessel's Electric Propulsion System

在Matlab的Simulink仿真环境下,针对电力推进系统四种不同运行工况,建立了基于Zigzag移相变压器的四种仿真模型。通过对仿真试验结果与实测数据的比较,验证了仿真模型的正确性。通过运行仿真试验得到的结论,研究了发电机内阻、系统不同工况及电力推进系统运行模式等因素对系统谐波特性的影响,这些研究结果为今后制定电力推进系统的运行管理方案提供了科学依据。还对改变移相变压器的移相角度对系统谐波特性的影响进行了定量分析,其结果对整定移相变压器的移相角度及匝数比具有指导作用。

This paper establishes on the basis of zigzag phase transformer four new simulation models respectively according to four different operation conditions of the electric propulsion system under MATLAB Simulink simulation environment. Through comparison of simulation results and measured data, the accuracy of the simulation model is verified. This paper conducts a research on the influence the internal resistance of the generator, different operating system and electric propulsion system run mode and other factors impose on harmonic characteristics by using the conclusion of running simulation test. These findings provide a scientific basis for the future development of electric propulsion system operation and management. This paper also conducts quantitative analysis of the impact of changing phase transformer of phase angle on harmonic characteristics, the results of which play as a guide on setting phase shift angle of phase shifting transformer and turns.