车载综合电力系统大信号失稳预测  

Large-Signal Instability Prediction of Vehicular Integrated Power System

作　　者：高强 袁东 刘春光 魏曙光 GAO Qiang;YUAN Dong;LIU Chunguang;WEI Shuguang(Department of Arms and Control Engineering, Academy of Army Armored Force, Beijing 100072, China)

机构地区：[1]陆军装甲兵学院兵器与控制系,北京100072

出　　处：《兵器装备工程学报》2020年第12期143-148,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(5150070296)。

摘　　要：针对车载综合电力系统因自身“弱惯性”而易失稳但又不确定失稳边界的问题,建立了计及DC/DC变换器、轮毂电机负载在内的车载综合电力系统大信号模型,利用混合势函数理论推导了系统的稳定域,并探究了DC/DC变换器电压外环控制器比例系数Kp、电机负载功率突变值ΔPload对系统稳定边界的影响规律,通过硬件在环仿真实验对以上理论分析的正确性进行了验证。研究结果表明:在系统电气参数确定的条件下,系统稳定域主要由Kp、ΔPload两个参数决定;相同条件下,减小ΔPload有利于增大系统稳定域;在Kp小于0.4时,增大Kp可以有效增大系统稳定域,提高系统带载能力。通过该稳定域能够有效预测车载综合电力系统的稳定状态。This paper focused on the unknown instability boundary of the vehicular integrated power system in terms of its weak inertia.The large signal model of the system including the DC/DC converter and motor load was proposed.Then the stability region was obtained by using the theory of hybrid potential function.Furthermore,the influence rule of voltage outer loop proportionality and the jumping power of the motor loads was obtained.The theoretical analysis resultswere verified by the hardware-in-loop simulation experiments.The results are carried out that the stability region was especially decided by the Kp andΔPload in conditions of the electrical parameters were determined.The stability region can be expanded by decreasing the value ofΔPload,also it can be effectively expanded by increasing the value of Kp when the Kp is below 0.4.The stability state of the vehicular integrated power system can be effectively predicted by the stability region.

关 键 词：车载综合电力系统 DC/DC变换器 大信号模型 稳定域 硬件在环仿真 

分 类 号：TJ811[兵器科学与技术—武器系统与运用工程]