基于模糊PID控制的电气机组双向逆变稳压补偿仿真

摘要

大型电气机组设备包括电机和稳压设备等，对电气机组的稳压控制是保证电气系统稳定工作的关键。研究了电气机组连续不间断动态电压无畸变失真恢复的设计原理和硬件实现与仿真。传统上使用Delta逆变技术设计电压稳压补偿，考虑更多的是有源单周控制，在抑制谐波和实现电压补偿恢复方面有一定的可行性，但对大型电气机组的稳压补偿效果不好。提出一种基于模糊PID控制的电气机组双向逆变稳压补偿技术，设计了电压补偿恢复器，分析了Delta逆变的电路设计和控制原理，采用模糊P ID控制实现双向逆变稳压补偿，实现了对电气机组的双向逆变稳压补偿算法改进。系统仿真测试结果表明，该技术能提高电气机组的发电功率，P ID神经元的放电频率达到最优，有效抑制动态抖振和静态电流脉动，提高系统稳压性能。%The large equipment electrical units include motor and power equipments ,voltage regulator control of electri‐cal units is the key to guarantee the stability of electric system .The principle and hardware implementation of recovery and simulation of electrical units uninterrupted dynamic voltage design without distortion is researched .The traditional method u‐ses Delta inverter technology to design voltage compensation traditionally ,it considers more active one cycle control ,har‐monic suppression and realization of voltage compensation recovery area is feasible ,but the voltage compensation effect for large electrical the unit is not good .An electrical unit bidirectional inverter voltage compensation technology is proposed based on fuzzy PID control .The voltage compensation restorer is designed ,and the circuit design and control principle of Delta inverter are analyzed .The fuzzy PID control is used to achieve bi‐directional inverter voltage compensation ,and the bi‐directional inverter voltage compensation algorithm is obtained to improve electrical units .Simulation test results show that the technology can improve the power of electrical unit ,the discharge frequency of PID neurons can achieve optimum ,and it can suppress buffeting and static dynamic current ripple ,the system voltage is improved .