Five different structures are described : standard transformer coupling , parafeed , resistively loaded stage capacitively coupled to the output transformer , tube ( valve ) based constant current source load capacitively coupled to the output transformer , and solid state ( mos fet ) constant current source load capacitively coupled to the output transformer 我们将讨论五种不同的方式:标准变压器耦合;旁馈耦合;电阻性负载电容性耦合至输出变压器;胆恒流源负载电容性耦合至输出变压器;以及晶体管恒流源负载电容性耦合至输出变压器。
Firstly , design the software phase - closed loops ; secondly , realize the double closed loops control of the instantaneous value and the virtual value . furthermore , the dynamic flux imbalance of the output transformer caused by ordinary pi arithmetic is analyzed in detail . a new solution for flux balance by sampling the instantaneous primary current of the output transformer and introducing the on - line calculated bias current component into the voltage regulation arithmetic is presented 系统软件实现了ups的各个功能模块,首先设计了软件锁相环;然后实现了输出电压瞬时值和有效值双闭环反馈控制;并且在深入分析基本数字pi算法所引起的输出变压器动态偏磁问题的基础上,提出了一种改进算法,实时消除了变压器的偏磁。