变频器低电压穿越电源控制系统的设计  

Control System Design of LVRT Power Supply in Transducer

作　　者：刘耀中[1] 苏玲燕[1] 田亮亮[1] 陈长江[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2015年第1期22-28,共7页

摘　　要：变频器低电压穿越电源的控制系统在变频器进行低电压穿越过程中起着至关重要的作用。本文根据低电压穿越改造的技术要求和火电厂现场的具体情况，总结了控制系统的设计要点，提出了控制系统的工作流程，分析了控制系统功能模块之间的逻辑关系，并进行了控制电路的设计。实验结果验证了变频器低电压穿越电源控制系统的设计方案能有效的保证变频器具备低电压穿越能力，满足设计要点。理论及实验结果为大功率开关电源类产品控制系统的设计提供了技术参照和支撑。Control system of LVRT power supply plays a vital role in the process of low voltage ride through. According to the technical requirements of low voltage ride through transformation and the specific circumstances of thermal power plant site, this paper summarized the design elements of the control system, proposed workflow of control system, analyzed the logical relationship between the control system functions and designed a control circuit. Experimental results verified that the design of control system of the LVRT power supply could effectively guarantee the capability of LVRT of the inverter, which met the design specifications. Theoretical and experimental results provide a technical reference and support for the design of high-power switching power supply control system.

关 键 词：低电压穿越 变频器 保护功能 控制系统 PWM 

分 类 号：TM921.5[电气工程—电力电子与电力传动]