CAJ | 학술논문

为获得变频驱动感应电机调速系统低频振荡产生的原因，以实验室一套船舶电力推进系统为例展开研究。建立了基于小扰动的感应电机、变频器及船舶电力推进系统的数学模型，分析了死区时间对系统稳定性的影响。利用根轨迹分析方法，通过解析计算与仿真分析绘制了系统的不稳定区域。讨论了电机定子电阻和漏感变化对系统稳定区域的影响，进行了试验验证，试验结果与解析计算得到的不稳定区域吻合较好，证明所建立的船舶电力推进系统小扰动数学模型以及采用的系统稳定性分析方法是正确可行的。
위획득변빈구동감응전궤조속계통저빈진탕산생적원인，이실험실일투선박전력추진계통위례전개연구。건립료기우소우동적감응전궤、변빈기급선박전력추진계통적수학모형，분석료사구시간대계통은정성적영향。이용근궤적분석방법，통과해석계산여방진분석회제료계통적불은정구역。토론료전궤정자전조화루감변화대계통은정구역적영향，진행료시험험증，시험결과여해석계산득도적불은정구역문합교호，증명소건립적선박전력추진계통소우동수학모형이급채용적계통은정성분석방법시정학가행적。
To obtain the reasons for the low?frequency oscillation of the speed regulating system of variable frequen?cy?driven induction motor, an electric propulsion system for ships in the laboratory as an example was researched. The mathematical models of the electric propulsion system for ships, the induction motor and the inverter based on small disturbance were built, and the effect of dead time on the stability of system was analyzed. Based on the root?locus method, the unstable areas of the system were drawn by the analytic calculation and emulated analysis, re?spectively. The effect of the resistance of motor stator and the change of leakage inductance on the stable area of the system was discussed and validated by experimental research. The unstable areas of experimental results coincide well with the analytic calculation. It was able to verify that the built small disturbance model of the electric propul?sion system for ships and the stability analysis method of the system is right and feasible.