IGBT逆变器采用SPWM技术power_3level

说明：  本模型采用abaqus自带的connector连接单元建模，实现了钉节点的模拟(In this model, the connector unit of ABAQUS is used to simulate the nail node)

说明：  fluent，使用UDF定义凝固模型中的源项，实现自热发热源(Fluent, using UDF to define the source term in solidification model, to realize self heating heat source)

说明：  umat基础知识教学，适合刚接触UMAT的新手做参考(UMAT basic knowledge teaching, suitable for beginners)

说明：  魔术轮胎公式，车辆动力学中常用的关于轮胎的建模(magic tire,used in vehicle model.)

说明：  中国电子科技集团公司认知与智能技术重点实验室发布的MaCA（Multi-agent Combat Arena）环境，是国内首个可模拟军事作战的轻量级多智能体对抗与训练平台，是多智能体对抗算法研究、训练、测试和评估的绝佳环境，可支持作战场景和规模自定义，智能体数量和种类自定义，智能体特征和属性自定义，支持智能体行为回报规则和回报值自定义等。(MaCA (multi agent combat) issued by the Key Laboratory of cognitive and intelligent technology of China Electronic Technology Corporation Arena) environment is the first lightweight multi-agent confrontation and training platform that can simulate military operations in China. It is an excellent environment for the research, training, testing and evaluation of multi-agent confrontation algorithms. It can support the customization of battle scenarios and scales, the number and types of agents, the characteristics and attributes of agents, and the behavior return rules and values of agents And so on.)

分别对matlab和ansys两种平台的拓扑优化结果分析比较，为学习者提供了两种不同优化设计思路，过程详细清晰，易于学习理解(The analysis and comparison of topology optimization results between MATLAB and ANSYS two platforms provide two different optimization design ideas for learners. The process is clear and clear, and easy to learn and understand.)

实现线性调频信号，实现对线性调频信号的建模(linear frequency modulation)

基于matlab 编程，利用一维圣维南方程组，模拟洪水演进过程(Using one-dimensional Saint-Venant equations to simulate flood routing process)

说明：  电力系统电压调节及一次调频的MATLAB仿真(Matlab simulation of primary frequency regulation)

说明：  单相全桥双极性逆变器，可以用来学习、仿真双极性控制(single phase full bridge inverter, bipolar)