基于优选矢量合成的Vienna整流器滑模预测控制  

Sliding Mode Predictive Control of Vienna Rectifier Based on Optimal Vector Synthesis

作　　者：党超亮 王飞[1] 刘丁[2] 同向前[1] 宋卫章[1] DANG Chaoliang;WANG Fei;LIU Ding;TONG Xiangqian;SONG Weizhang(School of Electrical Engineering,Xi'an University of Technology,Xi'an 710048,Shaanxi Province,China;School of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710054,Shaanxi Province,China)

机构地区：[1]西安理工大学电气工程学院,陕西省西安市710048 [2]西安理工大学自动化与信息工程学院,陕西省西安市710054

出　　处：《中国电机工程学报》2022年第23期8699-8707,共9页Proceedings of the CSEE

基　　金：电力设备电气绝缘国家重点实验室项目(EIPE21201);陕西省科技计划项目(2022JQ-512)。

摘　　要：面向并网变换器的传统模型预测直接功率控制(model predictive direct power control,DPMPC)常利用增加电压矢量数量或矢量区间的精确划分以实现定频控制。针对其导致处理器运算量增加、处理时间长的问题,提出一种基于优选开关矢量合成的Vienna整流器模型预测直接功率控制(direct power mode predictive control with constant frequency,DPMPC-CF)与滑模(sliding-mode control,SMC)外环控制的的双闭环复合控制方法。通过对Vienna整流器建模得到输入功率的预测值,利用SMC外环计算有功功率的给定值。在每个扇区内,通过优选代价函数最小所对应的3个电压矢量,采用代价函数计算相应电压矢量的占空比,进而实现类空间矢量脉宽调制(space vector pulse width modulation,SVPWM)。最后,从静态、暂态、调制信号等多个维度与传统的DPMPC进行对比验证,结果表明,所提出的DPMPC-CF具有良好的稳态和动态性能。The direct model predictive direct power control(DPMPC)for the grid-connected converters realizes the fixed frequency control by increasing the number of voltage vectors or the precise division of vector interval,which will cause the problems of increased processor calculation and long processing time.For this reason,this paper proposed a double closed-loop control strategy with fixed switching frequency based on optimal vector synthesis of model predictive direct power control(DPMPC-CF)in the inner loop and sliding-mode control(SMC)in the outer loop.The Vienna rectifier was modeled to obtain the predicted values of input power.Then,the given values of active power and reactive power of the system were obtained through the SMC control.In each sector,the three voltage vectors corresponding to the minimum cost function were optimized,and the duty cycle of the corresponding vector was calculated by the cost function,and the SVPWM-like modulation was realized.Finally,the comparison with the traditional DPDPC was given from static,transient and modulation signal dimensions.The results show that the proposed DPMPC-CF has good steady-state and dynamic performance.

关 键 词：VIENNA整流器 模型预测控制 滑模控制 直接功率控制 定频控制 

分 类 号：TM470.4031[电气工程—电器]