三相四线变换器相位补偿控制策略研究  

Research on Phase Compensation Control Schemes for Three-phase Four-wire Converters

作　　者：施烨[1] 吴在军[1] 窦晓波[1] 胡敏强[1] 张逸[2] 王秀茹 

机构地区：[1]东南大学电气工程学院,江苏省南京市210096 [2]国网福建省电力有限公司电力科学研究院,福建省福州市350007 [3]国网江苏省电力公司宿迁供电公司,江苏省宿迁市223800

出　　处：《中国电机工程学报》2017年第10期2971-2985,共15页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51177015);新世纪优秀人才支持计划项目(NCET-13-0129);江苏省产学研前瞻性联合研究项目(BY2015070-13)~~

摘　　要：比例复数积分(proportional complex integral,PCI)控制器作为一类基于内模原理控制器的最小构成单元,可用其构造同步坐标系下的比例积分控制器、比例谐振(proportional resonant,PR)控制器、重复控制器。但在上述构造过程中需将各PCI控制器增益取为相同值,此举将降低控制器增益的调节自由度,增大设计难度。该文在获取准PCI控制器的基础上,利用复数形式的增益系数,形成相位补偿准PCI(phase compensation quasi PCI,PCQPCI)控制器,将其与PCQPR相配合,对电压外环正/负序分量和零序分量进行控制,从而实现对三相四桥臂逆变器的恒压恒频控制。所提出的电压外环控制器方案能够独立地对任意次序分量进行相位补偿,提高控制系统的响应速度和稳定裕度。通过频域方法和线性二次型调节器完成对控制器参数的整定。最后通过仿真和实验,验证所提算法的可行性和有效性。The proportional complex integral （PCI） controller has been considered as the minimal constituent of the internal model controllers. Because the synchronous reference frame proportional integration （SRFPI） controller, the proportional resonant （PR） controller and the repetitive control （RC） can be constructed by the PCI controller. While the same gain coefficients are needed during the construction process, so the adjustment freedom would be reduced and the controllers would be more difficult to design. In this paper, phase compensation quasi PCI （PCQPCI） and PR （PCQPR） controllers were proposed to form positive （or negative） and zero sequence voltages regulating loops respectively. The constant voltage constant frequency （CVCF） control of the three-phase four-leg voltage source converter was realized. The proposed voltage regulating strategy can independently provide required phase compensations at any components. And the response speed and stability margin of the three-phase four-leg voltage source converter were optimized. The parameters of the controller were tuned by the frequency domain design method and the linear quadratic regulator （LQR） method. The feasibility and effectiveness of the proposed algorithm were verified by the simulation results with Matlab/Simulink and the experimental results with test platform.

关 键 词：内模控制 比例复数积分控制 相位补偿 三相四桥臂功率变换器 恒压恒频控制 

分 类 号：TM46[电气工程—电器]