基于环路补偿的增程式发电机组稳压控制策略研究

Voltage Stabilization Control Strategy for Extended-Range Generator Based on Loop Compensation

在增程式发电机组永磁同步发电机的稳压控制实验过程中,传统电压电流双闭环控制方式虽然能够得到稳定的直流母线电压,但在突加负载实验时存在电压波动较大、恢复时间较长的问题。对电压环路进行改进设计,在原有双闭环基础上加入转矩内环补偿,经过仿真实验与传递函数伯德图分析,验证了该方法能够有效抑制电压波动并提升响应速度。为提升控制效果,考虑将PI控制与免疫粒子群算法相结合,实现发电机控制器PI参数自整定,满足发电机组不同电机的变参数需求。算法运行结果表明,相较于传统试凑方法,稳压精度得到进一步提升。

In the process of voltage stabilization control experiment of permanent magnet synchronous generator with extended-range generator,although the traditional voltage and current double closed-loop control method can obtain stable DC bus voltage,it had the problems of large voltage fluctuation and long recovery time in the sudden loading test.The voltage loop design was improved,and the voltage inner loop compensation was added on the basis of the original double closed loop.The simulation test and transfer function Bode diagram analysis showed that the method could effectively suppress voltage fluctuation and improve the response speed.In order to improve the control effect,PI control was combined with immune particle swarm optimization algorithm to realize the PI parameter self-tuning of generator controller and meet the variable parameter requirements of different motors in the generator set.The running results of the algorithm showed that compared with the traditional trial-and-error method,the voltage stabilization accuracy was further improved.