基于改进型ASTW功率给定模型预测直接控制策略  

Predictive Direct Control Strategy Based onImproved ASTW Power Given Model

作　　者：王文杰 沈春锋 李姗 秦嘉盛 WANG Wenjie;SHEN Chunfeng;LI Shan;QIN Jiasheng(Shanghai Marine Equipment Research Institute,Shanghai 200031,China;School of Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China)

机构地区：[1]上海船舶设备研究所,上海200031 [2]中国矿业大学电气工程学院,江苏徐州221116

出　　处：《船舶工程》2024年第11期123-130,共8页Ship Engineering

摘　　要：脉冲宽度调制(PWM)整流器在发电机输出电压非理想条件下采用模型预测功率控制(MPDPC)时,有功功率给定由电压比例积分控制器(PI)外环输出与直流侧电压相乘确定,但PI控制器在负载突变时存在输出电压波动大、响应速度慢和鲁棒性差等问题。为此,提出一种基于改进型自适应超螺旋算法(ASTW)的模型预测直接功率控制(MPDPC)功率给定控制策略。通过对PWM整流器直流侧功率建模,设计基于超螺旋算法的非线性功率控制律;同时,为解决传统自适应率线性增长速度慢和抖振严重等问题,对自适应律进行优化,并对稳定性进行深入分析和理论证明。通过搭建仿真模型和试验平台,表明改进型ASTW可抑制系统抖振,减小功率波动,提高系统的动态响应速度和抗负载扰动的能力。When pulse width modulation(PWM)rectifiers adopt model predictive power control(MPDPC)under generators operating in the non-ideal voltage conditions,the active power is generally given by multiplying the voltage proportional integral controller(PI)outer loop with the DC side voltage.However,the PI controller has problems such as large output voltage fluctuations,slow response speed,and poor anti-interference performance when the load changes suddenly.Therefore,an improved adaptive super spiral algorithm(ASTW)based MPDPC power given control strategy is proposed.A nonlinear power control law based on the super spiral algorithm is designed by modeling the DC side power of PWM rectifiers.At the same time,to solve the problems of gain mismatch and chatter suppression before and after load mutation,the adaptive law is optimized,and the stability is thoroughly analyzed and theoretically proved.Finally,a simulation model and an experimental platform are established,which show that the improved ASTW can suppress system chatter,reduce power fluctuations,improve the dynamic response speed of the system,and enhance its ability to resist load disturbances.

关 键 词：脉冲宽度调制(PWM)整流器 电压不平衡 模型预测直接功率控制 自适应超螺旋滑模控制器 

分 类 号：TM464[电气工程—电器]