four terminal HVDC droop

在分析光伏发电原理与光伏电池数学模型的基础上，对由若干光伏阵列组成的大型光伏电站进行PSCAD仿真建模，并分析其运行特性。采用恒电压跟踪方法并利用不同温度下的测量制表值共同实现大规模光伏阵列的最大功率点跟踪(maximum powerpointtracking，MPPT)，并设计了相应的并网逆变器控制策略。最后，对大型光伏电站在正常运行以及站内外发生三相短路故障的情况进行仿真分析。(On the basis of analyzing the principle of photovoltaic generation and mathematical model of PCcells.)

说明：  在局部阴影下实现光伏板的多峰mppt。运用模糊控制打的方法得到理想的输出特性曲线。(Multi-peak MPPT of photovoltaic panel is realized under local shadow.Using the method of fuzzy control to get the ideal output characteristic curve.)

单相半桥逆变电路，由直流逆变为交流，很好用的元件 matlab新手上路(Single-phase half-bridge inverter circuit, inverter from DC to the exchange of components with very good new road matlab)

电力系统仿真软件PST，里面的原程序和模块非常丰富，发出来.希望对大家有好处，共同学习。(Power system simulation software PST, inside of the original procedures and module is very rich, coming. Hope to everyone has the advantage, cooperative learning. )

PSCAD可变风场接配电网模型，内含详细模型参数说明，简单易懂，参考价值高，非常适合初学者学习，可运行(PSCAD variable wind field connected to the distribution network model, including detailed model parameters, easy to understand, high reference value, very suitable for beginners to learn, can run)

这是一个变速变桨距控制的9MW风力发电并网系统（DFIG），先运行.m文件，设定Ts=5e-6s。亲测有效(This is a variable speed pitch control 9MW wind power generation grid connected system (DFIG). First, run the.M file and set Ts=5e-6s. Pro test effectiveness)

是一个s7-200 smart与台达变频器通讯及电机控制的程序(Is a S7-200 smart and delta inverter communication and motor control procedures)

说明：  100kW光伏电源接入25kV配电网，官方例子，在simulink可运行(100kW photovoltaic power supply is connected to 25kV distribution network)

genetic algorithm for optimal power flow code in matlab

模块化多电平变换器仿真模型，带有电容电压控制和环流抑制(Modular multilevel converter simulation model with capacitor voltage control and circulating current suppression)