新型复合控制策略在三相逆变器中的应用  

Application of Novel Synthesized Control Strategy in Three-phase Inverter

作　　者：王英俊[1] 王武[1] 蔡逢煌[1] 

机构地区：[1]福州大学电气工程与自动化学院,福州福建350108

出　　处：《电源学报》2012年第6期77-82,共6页Journal of Power Supply

摘　　要：设计了一种改进型重复控制器结合PI双闭环的复合控制方案,并成功应用到80kVA三相EPS逆变系统中。对传统重复内模作了改进,改进后的重复控制器简化了补偿器的设计,并提高了系统谐波抑制能力。在此基础上加入双闭环控制器以改善逆变器的高谐振峰值,提高动态响应速度。实验结果表明,所设计的复合控制方案有效降低了EPS带整流性负载时输出电压的谐波畸变率(THD),同时具有良好的动态特性。A synthesized control scheme based on improved repetitive control and PI double closed loop control was proposed, which is applied for the 80kVA three-phase Emergency Power Supply （EPS） inverter system successfully. In order to simplify the design of compensator and enhance the harmonic rejection ability, the traditional repetitive internal model was reformed. The double- loop controller was added to reform the high-resonant peak of the open-loop inverter and improve the dynamic performance. The experiment results indicate that the designed synthesized control scheme could not only reduce the THD of output voltage with rectified load, but also have a quick dynamic characteristic.

关 键 词：三相逆变器 重复控制 双环控制 

分 类 号：TM464[电气工程—电器]