一种交直交净化电源的优化使用

Optimal use of AC-DC-AC Purification Power Supply

本文提出了一种交直交净化电源的优化方案,由于输入电压经常出现电压波动范围较大的问题,因此,中间件采用直流方式完成对输入电压和输出电压的解耦过程。为解决设备接入瞬间对供电电源的冲击,造成逆变器保护停机,采用多闭环反馈控制器方案,加强接触网电源的限流保护功能。通过引入负载电流前馈控制,提高系统鲁棒性,当系统负载不稳定时,可及时对负载进行调节,同时使动态响应特性大大提高。

An optimization scheme for AC-DC-AC purifi cation power supply is proposed.Because the input voltage often has a large voltage fl uctuation range,the middleware is used to complete the decoupling process of the input voltage and output voltage by using DC mode.At the same time,in order to solve the impact of the equipment on the power supply at the moment of equipment access,which causes the inverter to protect the shutdown,a multi-closed-loop feedback controller solution is adopted to strengthen the currentlimiting protection function of the catenary power supply.By introducing load current feedforward control,the robustness of the system is improved.When the system load is unstable,the load can be adjusted in time and the dynamic response characteristics are greatly improved.