摘要
本文提出了一种基于交—直—交—直—交型双直流环拓扑的一种新型控制方式的电力电子变压器。根据电路的拓扑结构特点,在原边侧电压外环,电流内环的双闭环控制方案,电压外环是为了实现对输出电压的控制,电流内环是为了实现单位功率因数控制;在二次侧分别用SVPWM和SPWM控制逆变器的两种不同的策略。并通过仿真比较分析,该策略输出恒压恒频的交流电压,易于实现数字化。
This papers show that the new controlled mode,which is based on AC-DC-AC double DC topology.For the character of topology,the primary side is scheme of double closed-loop control,the out loop of voltage controls the out voltage,the inner loop of current improves the power quality ;The secondary side shows two different scheme by SVPWM、SPWM,which control the inverter,and the output voltage of the PET is CVCF by Simulink,PET is still stability of output voltage,the scheme makes the system digital.
出处
《电气技术》
2008年第1期28-32,共5页
Electrical Engineering
