针对分裂电容式三相四线制配电网静止同步补偿器(distribution static compensator, DSTATCOM)存在电流检测跟踪精度差、受负载干扰程度大等问题,基于无差拍预测策略控制算法,本文提出具有延时补偿性能的新型电流预测控制策略,该算法能够消除控制延时引起的补偿误差量,同时省去传统电流预测控制算法中的dp旋转坐标变换,简化了控制系统的设计过程;另外,借助于三维空间矢量调制技术实现开关状态的选择,使控制系统具有固定开关频率,从而简化滤波电感的设计.最后,对该控制器的设计进行了详细分析以及仿真与实验验证,结果表明采用所提出的算法的有效性和可行性.%In view of such issue as weak tracking accuracy of current detection and large load interference in the distribution static compensator ( DSTATCOM for short ) of split capacitive three-phase four-wire dis-tribution network,in this paper,a novel current predictive control strategy with time delay compensation performance is proposed based on the deadbeat predictive strategy control algorithm,which can eliminate the compensation error due to control delay and,at the same time,omit dp rotation coordinate transforma-tion in the traditional current predictive control algorithm and simplify the design process of the control sys-tem. Moreover,the selection of switch condition is achieved with help of 3-D space vector modulation tech-nology so to keep the control system have fixed switch frequency,thus simplify design of filter inductance. Finally,the design of the controller is analyzed in detail,simulation and experiment are verified,which proves that adoption of the algorithm proposed is effective and feasible.
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