摘要
水电专用UPS使用单片机PIC18F2331作为控制核心,通过驱动芯片HCPL3120驱动全桥逆变电路桥臂上的4个场效应管,控制逆变器输出标准正弦电压.同时,还设计了包括直流过压、直流欠压、频率捕捉、掉电检测和输出过载等保护电路,实现了水电站故障时启闭机和调速器的快速可靠关断,提高了电站运营的安全系数.
In the electric system of power,the action of online UPS is supplying power to load when the mains supply and inverter output are existing at the same time.In this paper,using PIC18F2331 as control core,and HCPL3120 to drive four MOSFET in the full-bridge circuit.Then inverter outputs perfect voltage.At the same time,the circuit of UPS includes protective circuit,just as DC over-voltage,DC under-voltage,frequency acquisition,power failure,output overloading,to pledge the turn-off of hoist and speed regulator,and raise safety factor of system.
出处
《机械与电子》
2012年第7期60-63,共4页
Machinery & Electronics
