电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2015年
2期
105-109
,共5页
双电源管理系统%推挽式电源拓扑%Modbus通信协议%切换时间
雙電源管理繫統%推輓式電源拓撲%Modbus通信協議%切換時間
쌍전원관리계통%추만식전원탁복%Modbus통신협의%절환시간
dual power management system%push-pull power topology%modbus protocol%switching time
本文提出一个具有隔离功能的双电源管理系统，系统由控制器电路、隔离电路、切换电路和充电电路五部分构成。控制器实时监测主电源、备用电源电压与输出电流状态。主电源供电时，控制器控制充电电路向备用电源充电，使备用电源始终处于饱和状态；主电源发生故障时，控制器通过切换电路自动切换到备用电源向后续电路供电。隔离电路通过使用推挽式电源拓扑结构完成输入与输出的隔离，同时保证输出电压的稳定。系统提供RS485通信接口，运行Modbus标准协议，从而可以在远程实现对系统的控制。经实际测试，本系统具有切换时间短、供电电压稳定、隔离效果好、效率高等优点。
本文提齣一箇具有隔離功能的雙電源管理繫統，繫統由控製器電路、隔離電路、切換電路和充電電路五部分構成。控製器實時鑑測主電源、備用電源電壓與輸齣電流狀態。主電源供電時，控製器控製充電電路嚮備用電源充電，使備用電源始終處于飽和狀態；主電源髮生故障時，控製器通過切換電路自動切換到備用電源嚮後續電路供電。隔離電路通過使用推輓式電源拓撲結構完成輸入與輸齣的隔離，同時保證輸齣電壓的穩定。繫統提供RS485通信接口，運行Modbus標準協議，從而可以在遠程實現對繫統的控製。經實際測試，本繫統具有切換時間短、供電電壓穩定、隔離效果好、效率高等優點。
본문제출일개구유격리공능적쌍전원관리계통，계통유공제기전로、격리전로、절환전로화충전전로오부분구성。공제기실시감측주전원、비용전원전압여수출전류상태。주전원공전시，공제기공제충전전로향비용전원충전，사비용전원시종처우포화상태；주전원발생고장시，공제기통과절환전로자동절환도비용전원향후속전로공전。격리전로통과사용추만식전원탁복결구완성수입여수출적격리，동시보증수출전압적은정。계통제공RS485통신접구，운행Modbus표준협의，종이가이재원정실현대계통적공제。경실제측시，본계통구유절환시간단、공전전압은정、격리효과호、효솔고등우점。
This paper presents a dual power management system with isolation capacity. The system consists of controller cir-cuit, isolation circuit, switching circuit and charging circuit. The controller circuit keeps track of the voltage of main power sup-ply, standby power and output current state. When the main power supply take effect, the controller controls the charging circuit to charge the backup power and keeps it always in saturation;when the main power failure, the controller controllers the switch-ing circuit automatically switches to backup power to the subsequent circuits. Isolation function implement by using the push-pull topology, while ensuring the stability of the output voltage. At the same time, the system provides RS485 communication interface and run the standard Modbus protocol, in order that the remote host can control of the system. The test results show that the sys-tem has the shorter switching time, more stable output voltage, better isolation effect and higher efficiency.
