考虑非理想器件模型的电力电子系统状态方程分析法
发布时间：2018-07-17 19:54
【摘要】：针对目前电力电子仿真软件存在的对功率开关器件电磁瞬态过程仿真不够准确,强刚性电路引起数值仿真计算发散等问题,提出一种基于量化状态系统(QSS)的离散状态事件驱动(DSED)仿真分析方法。该方法需要加入自动识别电力电子系统开关过程以及根据电路拓扑和所处状态自动列写状态方程的相关算法。针对该需求提出一种基于图论方法的状态方程及输出方程提取分析方法。首先,经理论分析得到,将选用的器件模型代入电路可以得到状态方程的标准形式;进而,提出电力电子系统电路的参数结构矩阵程式化列写方法,并基于此方法针对开关电路每一次开关器件切换都需要重新列写状态方程这一特点进行了相关分析。最后,对几个典型电力电子系统电路进行仿真计算,结果证明了该提取分析方法的有效性。
[Abstract]:In view of the current power electronic simulation software, the simulation of electromagnetic transient process of power switch device is not accurate enough, and the strong rigidity circuit causes numerical simulation calculation divergence and so on. A discrete state event driven (DSED) simulation analysis method based on quantized state system (QSS) is proposed. This method needs to add automatic identification of power electronic system switching process and automatically write the state equation according to the circuit topology and the state of the relevant algorithm. A state equation and output equation extraction and analysis method based on graph theory is proposed. First of all, through theoretical analysis, the standard form of state equation can be obtained by inserting the selected device model into the circuit, and then, the method of parameter structure matrix programming of power electronic system circuit is proposed. Based on this method, a correlation analysis is carried out to analyze the need to relist the state equations for each switch in a switching circuit. Finally, several typical power electronic system circuits are simulated and calculated, and the results show that the proposed method is effective.
【作者单位】： 清华大学电机系电力系统及发电设备安全控制和仿真国家重点实验室;
【基金】：国家自然科学基金重大项目资助(51490680,51490683)
【分类号】：TM743
[Abstract]:In view of the current power electronic simulation software, the simulation of electromagnetic transient process of power switch device is not accurate enough, and the strong rigidity circuit causes numerical simulation calculation divergence and so on. A discrete state event driven (DSED) simulation analysis method based on quantized state system (QSS) is proposed. This method needs to add automatic identification of power electronic system switching process and automatically write the state equation according to the circuit topology and the state of the relevant algorithm. A state equation and output equation extraction and analysis method based on graph theory is proposed. First of all, through theoretical analysis, the standard form of state equation can be obtained by inserting the selected device model into the circuit, and then, the method of parameter structure matrix programming of power electronic system circuit is proposed. Based on this method, a correlation analysis is carried out to analyze the need to relist the state equations for each switch in a switching circuit. Finally, several typical power electronic system circuits are simulated and calculated, and the results show that the proposed method is effective.
【作者单位】： 清华大学电机系电力系统及发电设备安全控制和仿真国家重点实验室;
【基金】：国家自然科学基金重大项目资助(51490680,51490683)
【分类号】：TM743
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